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<strong>teaching</strong><br />

EARTH<br />

SCIENCES<br />

Dear Editor<br />

From Primary Committee<br />

From the Chair<br />

Teaching Palaeontology<br />

Using Raw Data from the<br />

Internet: The Example of<br />

www.asoldasthehills.org<br />

Katla-Clysmic! –<br />

Managing a Hazardous<br />

Environment<br />

Should <strong>Earth</strong> <strong>Science</strong><br />

Teachers Worry About<br />

Creationists’ Ideas<br />

Durham <strong>Earth</strong> Scientists<br />

go Back to School!<br />

Derby Conference Post-<br />

16 ‘Bring and Share’,<br />

September 2005<br />

A-Level Study Day at<br />

Dudley Museum and<br />

Art Gallery and the<br />

Educator Placement<br />

Programme<br />

More Recent<br />

Geological Howlers<br />

Take a Nappe<br />

Tales from Iceland<br />

The Life and Work of<br />

Alfred Wegener<br />

1880-1930<br />

News and Views<br />

Diary<br />

Reviews<br />

PEST Issue 55<br />

Magazine of the EARTH SCIENCE TEACHERS’ ASSOCIATION<br />

Volume 31 ● Number 3, 2006 ● ISSN 0957-8005<br />

www.esta-uk.org


Teaching <strong>Earth</strong> <strong>Science</strong>s: Guide for Authors<br />

The Editor welcomes articles of any length and nature and on any topic related to<br />

<strong>Earth</strong> science education from cradle to grave. Please inspect back copies of TES,<br />

from Issue 26(3) onwards, to become familiar with the magazine house-style.<br />

Text<br />

Please supply the full text on disk or as an email attachment: Microsoft Word is<br />

the most convenient, but any widely-used wordprocessor is acceptable. Figures,<br />

tables and photographs must be referenced in the text, but sent as separate jpeg<br />

or tiff files (see below).<br />

Please use SI units throughout, except where this is inappropriate (in which case<br />

please include a conversion table). The first paragraph of each major article should<br />

not have a subheading but should either introduce the reader to the context of the<br />

article or should provide an overview to stimulate interest. This is not an abstract in<br />

the formal sense. Subsequent paragraphs should be grouped under sub-headings.<br />

To Advertise in<br />

<strong>teaching</strong><br />

EARTH<br />

SCIENCES<br />

<strong>teaching</strong><br />

EARTH<br />

SCIENCES<br />

References<br />

Please use the following examples as models<br />

(1) Articles<br />

Mayer, V. (1995) Using the <strong>Earth</strong> system for integrating the science curriculum.<br />

<strong>Science</strong> Education, 79(4), pp. 375-391.<br />

(2) Books<br />

McPhee, J. (1986 ) Rising from the Plains. New York: Fraux, Giroux & Strauss.<br />

(3) Chapters in books<br />

Duschl, R.A. & Smith, M.J. (2001) <strong>Earth</strong> <strong>Science</strong>. In Jere Brophy (ed), Subject-<br />

Specific Instructional Methods and Activities, Advances in Research on Teaching. Volume 8,<br />

pp. 269-290. Amsterdam: Elsevier <strong>Science</strong>.<br />

Figures<br />

Prepared artwork must be of high quality and submitted on paper or disk. Handdrawn<br />

and hand-labelled diagrams are not normally acceptable, although in some<br />

circumstances this is appropriate. Each figure must be submitted as a separate file.<br />

(not embedded in a Word file) Each figure must have a caption.<br />

Photographs<br />

Please submit colour or black-and-white photographs as originals. They are also<br />

welcomed in digital form on disk or as email attachments: .jpeg format is to be preferred.<br />

Please use one file for each photograph, to be at 300dpi. Each photograph<br />

must have a caption.<br />

Copyright<br />

There are no copyright restrictions on original material published in Teaching <strong>Earth</strong><br />

<strong>Science</strong>s if it is required for use in the classroom or lecture room. Copyright material<br />

reproduced in TES by permission of other publications rests with the original<br />

publisher. Permission must be sought from the Editor to reproduce original material<br />

from Teaching <strong>Earth</strong> <strong>Science</strong>s in other publications and appropriate acknowledgement<br />

must be given.<br />

All articles submitted should be original unless indicted otherwise and should<br />

contain the author’s full name, title and address (and email address where relevant).<br />

They should be sent to the Editor,<br />

Cally Oldershaw<br />

Email: cally.oldershaw@btopenworld.com<br />

Tel: 07796 942361<br />

Magazine of the EARTH SCIENCE TEACHERS’ ASSOCIATION<br />

Volume 30 ● Number 3, 2005 ● ISSN 0957-8005<br />

Telephone<br />

Ian Ray<br />

0161 486 0326<br />

www.esta-uk.org<br />

COPY DEADLINES<br />

TES 31.4 (PEST 56) 25 September 2006 for<br />

publication November/December 2006<br />

TES 32.1 (PEST 57) 13 December 2006 for<br />

publication January/February 2007<br />

TES 32.2 (PEST 58) 20 February 2007 for<br />

publication April/May 2007<br />

WHERE IS PEST<br />

PEST is printed as the<br />

centre 4 pages in<br />

Teaching <strong>Earth</strong> <strong>Science</strong>s.


Magazine of the EARTH SCIENCE TEACHERS’ ASSOCIATION<br />

Dear Editor<br />

From Primary Committee<br />

From the Chair<br />

Teaching Palaeontology<br />

Using Raw Data from the<br />

Internet: The Example of<br />

www.asoldasthehills.org<br />

Katla-Clysmic! –<br />

Managing a Hazardous<br />

Environment<br />

Should <strong>Earth</strong> <strong>Science</strong><br />

Teachers Worry About<br />

Creationists’ Ideas<br />

Durham <strong>Earth</strong> Scientists<br />

go Back to School!<br />

Derby Conference Post-<br />

16 ‘Bring and Share’,<br />

September 2005<br />

A Level Study Day at<br />

Dudley Museum and<br />

Art Gallery and the<br />

Educator Placement<br />

Programme<br />

More Recent<br />

Geological Howlers<br />

Take a Nappe<br />

Tales from Iceland<br />

The Life and Work of<br />

Alfred Wegener<br />

1880-1930<br />

News and Views<br />

Diary<br />

Reviews<br />

PEST Issue 55<br />

Volume 31 ● Number 3, 2006 ● ISSN 0957-8005<br />

www.esta-uk.org<br />

TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

<strong>teaching</strong><br />

EARTH<br />

SCIENCES<br />

Teaching <strong>Earth</strong> <strong>Science</strong>s is published quarterly by<br />

the <strong>Earth</strong> <strong>Science</strong> Teachers’ <strong>Association</strong>. ESTA<br />

aims to encourage and support the <strong>teaching</strong> of<br />

<strong>Earth</strong> sciences, whether as a single subject or as<br />

part of science or geography courses.<br />

Full membership is £25.00; student and retired<br />

membership £12.50.<br />

Registered Charity No. 1005331<br />

Editor<br />

Cally Oldershaw<br />

Tel: 07796 942361<br />

Email: cally.oldershaw@btopenworld.com<br />

Advertising<br />

Ian Ray<br />

Tel: 0161 486 0326<br />

Email: ianray@ray2003.fsworld.co.uk<br />

Reviews Editor<br />

Dr. Denis Bates<br />

Tel: 01970 617667<br />

Email: deb@aber.ac.uk<br />

Council Officers<br />

Chairman<br />

Martin Whiteley<br />

Tel: 01234 354859<br />

Email: mjwhiteley@yahoo.co.uk<br />

Secretary<br />

Susan Beale<br />

Email: beales.lowrow@virgin.net<br />

Membership Secretary<br />

Hamish Ross<br />

PO BOX 23672<br />

Edinburgh EH3 9XQ<br />

Tel: 0131 651 6410<br />

Email: hamish.ross@education.ed.ac.uk<br />

Treasurer<br />

Maggie Williams<br />

Email: maggiee.williams@tiscali.co.uk<br />

Primary Co-ordinator<br />

Niki Whitburn<br />

Email: farfalle@btinternet.com<br />

Secondary Co-ordinator<br />

Chris King<br />

Email: c.j.h.king@educ.keele.ac.uk<br />

Higher Education Co-ordinator<br />

Mike Tuke<br />

Email: miketuke@btinternet.com<br />

CONTENTS<br />

4 From the Editor<br />

5 Dear Editor<br />

6 From the Primary Committee<br />

7 From the Chair<br />

8 Teaching Palaeontology Using Raw Data from the<br />

Internet: The Example of www.asoldasthehills.org<br />

Lucy A. Muir, Joseph P. Botting and Roy Barlow<br />

11 Katla-Clysmic! – Managing<br />

a Hazardous Environment<br />

Ian K Hardie<br />

14 Should <strong>Earth</strong> <strong>Science</strong> Teachers Worry About<br />

Creationists’ Ideas<br />

Dr Antony Wyatt<br />

17 Durham <strong>Earth</strong> Scientists go Back to School!<br />

Stuart Jones<br />

20 Derby Conference Post-16 ‘Bring and Share’,<br />

September 2005<br />

Chris King<br />

22 A-Level Study Day at Dudley Museum and<br />

Art Gallery and the Educator Placement<br />

Programme<br />

Kate Figgitt and Bill Groves<br />

24 More Recent Geological Howlers<br />

Jo Conway<br />

25 Take a Nappe<br />

Jack Treagus<br />

28 Tales from Iceland<br />

Dawn Windley<br />

29 The Life and Work of Alfred Wegener 1880-1930<br />

Clare Dudman<br />

32 News and Views<br />

37 ESTA Diary<br />

38 Reviews<br />

PEST – Issue 55 – At School with <strong>Earth</strong> <strong>Science</strong><br />

Visit our website at www.esta-uk.org<br />

Contributions to future issues of Teaching <strong>Earth</strong><br />

<strong>Science</strong>s will be welcomed and should be<br />

addressed to the Editor.<br />

Opinions and comments in this issue are the<br />

personal views of the authors and do not<br />

necessarily represent the views of the <strong>Association</strong>.<br />

Designed by Character Design<br />

Highridge, Wrigglebrook Lane, Kingsthorne<br />

Hereford HR2 8AW<br />

<strong>teaching</strong><br />

EARTH<br />

SCIENCES<br />

Front cover<br />

Glacial meltwater river from the snout<br />

of the Solheimajökull glacier<br />

3 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Helping Raise Achievement<br />

As I write this, the sun is shining and the students<br />

are sitting exams. It always seems rather unfair<br />

to wait the whole year for a bit of sunshine and<br />

then spend it indoors! Following the exams, of course is<br />

the marking of exam papers. My first batch for marking<br />

arrived today, looking pretty with pink covers.<br />

For those of you who are not marking, you may well<br />

be involved in setting examinations, discussing assessment<br />

methods and debating the curriculum. Whatever<br />

your involvement or interest, have you thought of the<br />

decision makers and how you might help by including<br />

your ideas, experience and expertise There are a number<br />

of consultations to which your comments could be<br />

help. Don’t be put off writing as an individual – your<br />

views are important. If you would prefer to get together<br />

with a group of colleagues, or write a piece for your<br />

school, association or society to submit on your behalf,<br />

then do it. And next time you are having a chat and<br />

‘putting the world to rights’ in the staff room or elsewhere,<br />

check out where your ideas might be useful and<br />

maybe even make a difference.<br />

Draft criteria for AS and A level <strong>Science</strong><br />

The draft GCE criteria consultation is now over and<br />

QCA has drawn together all of the responses into a set<br />

of recommendations. Several ESTA members including<br />

Chris King, Pete Loader and myself were involved<br />

in the production of the draft criteria for Geology. See<br />

www.qca.org.uk/downloads/QCA-06-2404_GCE_<strong>Science</strong>.pdf<br />

(geology is on page 17).<br />

Sustainable Schools<br />

Issues like climate change, water scarcity and energy efficiency<br />

have come to the fore with the launch by the<br />

Department for Education and Skills (DfES) of a major<br />

consultation with schools on sustainable development.<br />

The consultation aims to get schools, pupils and their<br />

communities thinking about how they can fulfil the Government’s<br />

vision for schools to be models of sustainable<br />

development, and what support they need to do so.<br />

The framework contains ideas for encouraging<br />

pupils to walk or ride to school, interesting ways of<br />

exploring sustainable development issues in the curriculum<br />

and incorporating environmental projects in<br />

their buildings and grounds. It gives schools an opportunity<br />

to talk about their approach with all those who<br />

work with them, like local authorities, voluntary organisations<br />

and businesses.<br />

The Secretary Alan Johnson and Junior Education<br />

Minister Parmjit Dhanda marked the launch with a<br />

visit to Argyle Primary School in Camden, London.<br />

The school has developed several sustainable development<br />

projects, including a watering system powered by<br />

renewable energy. Alan Johnson said:<br />

“We know that our young people are keenly aware of environmental<br />

issues – in fact in many ways they are driving the<br />

change in attitudes to recycling and conservation”.<br />

“I would urge schools to tap into this interest to really engage<br />

young people through the curriculum, the school’s environment<br />

and awareness of the community around them. Schools can<br />

really help young people be part of the solution to the world’s big<br />

challenges”.<br />

“We know that many schools are leading the way, either by<br />

working to improve the goods they offer, encouraging healthy<br />

ways to travel to schools and looking at how they can use energy<br />

and water more efficiently. I want to see this action replicated in<br />

all schools. The long-term benefits are huge – it can contribute<br />

to raising achievement, improving behaviour and cost savings”.<br />

“Schools are at the heart of their communities and many are<br />

already leading the way by encouraging sustainability in different<br />

areas of school life by looking at things like efficient use of<br />

energy and water. I would like to see this replicated in all<br />

schools.”<br />

“Young people are keenly aware of, and highly motivated by,<br />

environmental issues. In many ways they are ahead of adults in<br />

their attitudes to recycling and conservation. Channelling this<br />

enthusiasm helps raise achievement and improve behaviour and<br />

could save money as well as addressing big issues such as climate<br />

change – it really is a win-win solution.”<br />

This is believed to be the first government consultation<br />

to be carbon neutral and covers the following areas:<br />

● food and drink – considering how food for school<br />

meals can be ethically sourced<br />

● energy and water – reducing the demand for energy<br />

and water through energy and water conservation<br />

● travel and traffic – encouraging and supporting more<br />

eco-friendly journeys to schools, for example walking<br />

and cycling<br />

● purchasing and waste – reducing costs and support<br />

markets for ethical goods and services at the same<br />

time<br />

● buildings and grounds – good design can translate<br />

into improved staff morale, pupil behaviour and<br />

achievement as well as nature conservation<br />

● inclusion and participation – providing an inclusive,<br />

welcoming atmosphere that values everyone’s participation<br />

and contribution<br />

● local well-being – acting as a hub of learning and<br />

change in the local community<br />

● global dimension – helping pupils to appreciate the<br />

impact of their personal values, choices and behaviours<br />

on the wider world.<br />

Working with Climate Care, the DfES has offset the<br />

CO 2 emissions arising from all printing and distribution,<br />

consultation events, and response routes in what is<br />

believed to be the first climate neutral government con-<br />

www.esta-uk.org<br />

4


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

sultation. The money used to offset these will go<br />

towards sustainable energy projects, like the production<br />

of energy efficient cooking stoves for schools in India.<br />

Schools have a special role to play in securing the<br />

future for young people; they can help young people be<br />

part of the solution to the world’s big challenges, rather<br />

than part of the problem.<br />

Would you like to respond, or can you help a school<br />

to start thinking about these issues The next step is to<br />

read the consultation document: Sustainable Schools –<br />

Consultation Document (PDF). If you’d rather get free<br />

printed copies of the documents sent to you, telephone<br />

DfES Publications on 0845 6022260 quoting ref 0470-<br />

2006DOC-EN (consultation paper) and 0481-<br />

2006DOC-EN (summary). www.dfes.gov.uk/<br />

consultations/conDetails.cfmconsultationId=1398<br />

Making the most of rainy days – <strong>Science</strong> and the<br />

social and political impact of water shortage<br />

In May, the All-Party Parliamentary Group for <strong>Earth</strong><br />

<strong>Science</strong>s met in the House of Commons for a meeting<br />

on water shortage. Presentations were given by Trevor<br />

Bishop (Head of Water Resource Management, Environment<br />

Agency), Andrew McKenzie (Groundwater<br />

Information Manager, British Geological Survey) and<br />

Mike Pocock (Head of Strategic Planning, Veolia<br />

Water UK – including Three Valleys Water, Folkestone<br />

and Dover Water and Tendring Hundred Water).<br />

We are currently experiencing the worst drought<br />

since 1932. The drought, housing growth and environmental<br />

pressures require us to urgently appraise the<br />

future and how we can maintain security of supply<br />

whilst balancing risks, costs and environmental concerns<br />

and ensuring sustainability. The presentations<br />

looked at possible strategies for ensuring that water is<br />

available where it is needed, including techniques such<br />

as the underground storage of water and its recovery,<br />

and bulk transfer of water resources from areas of surplus<br />

to areas of deficit.<br />

Editor<br />

Dear Editor<br />

Mnemonics – Are you ready for a possible avalanche of<br />

mnemonics Have you been inundated by a flood of<br />

them<br />

I have attached some, they are mostly restricted to<br />

my student days – I haven’t needed to teach the subdivisions<br />

of the Ordovician, the families of the Graptoloidea<br />

or the zones of the Namurian!<br />

Others have been quoted in my <strong>teaching</strong> as examples<br />

(e.g. plagioclases, hardness scale), but I have then set<br />

students to work ones out for themselves. Do get back<br />

to me on any of these if you care to. Peter Perkins<br />

A few of these are ready to mind and others I had forgotten<br />

and have had to ‘dig out’ from a small card-index<br />

box I still have from student days.<br />

Mohs’ scale: The Governor (of) Cyprus Found A<br />

Fellow Quarrelling, The Cad Died.<br />

This was devised when I was doing National Service<br />

in Cyprus in 1957 – between A-level Geology at school<br />

and going on to Reading University.<br />

Phanerozoic: Cards Of Silk Don’t Cause Permanent<br />

Traces; Judges Create Even Over Messy Plates.<br />

This illustrates that a mnemonic doesn’t need to be<br />

‘intelligent’, just so long as it isn’t gobbledegook. This<br />

is, of course, incomplete – firstly, it predates the appearance<br />

of Palaeocene in the list that was widely used in<br />

textbooks; and secondly, I never needed to complete the<br />

mnemonic in order to complete the list – Pleistocene<br />

and Recent always got added correctly.<br />

Ordovician: Always Commiserate Loves Last<br />

‘Appiness<br />

I am (now) ashamed that this goes down the succession<br />

– I have always taught my students to start at the<br />

bottom and work up. However this, I suppose, illustrates<br />

that with a mnemonic the important thing is getting<br />

the facts correct, irrespective of how it is done. This<br />

also dates back to when the Tremadoc was placed in the<br />

top of the Cambrian – so it wouldn’t do for nowadays.<br />

Plagioclases: Apples And Oranges Always Look<br />

Bloody Awful.<br />

Nothing much to add to this!<br />

This is one you ought to be able to work out! It was for<br />

remembering the contents of a list and not any special<br />

order: Put All Spitfires Under Giant ‘angers.<br />

Graptolites: these are the families of the Graptoloidea<br />

– or they were in the late 50’s!<br />

I had to check up on this and found it in A, Morley<br />

Davies ‘An Intro to Palaeo’, page 206: [does anybody<br />

else have this book on their shelf!] Dogs Love Digging<br />

Deep (in) Lots Of Dirty Mud. One problem with this<br />

(but it wasn’t a problem) is that I had to remember<br />

‘Lots’ referred to Glossograptidae.<br />

Namurian: Goniatites Run Riot (having) Hodson<br />

Exploring Eire Pleasurably.<br />

These are the zones and, as with the Ordovician,<br />

they run downwards, against the sequence. Also it<br />

includes the P1-P2 Lower Bowland Shales; all of this as<br />

on page 202 of ‘The Stratigraphy of the British Isles’ by<br />

Rayner. As you probably realise it dates from a time<br />

when Frank Hodson was Head of Palaeo at Reading –<br />

so is, in a sense, ‘of the moment’ and not applicable to<br />

the present.<br />

Answer to number five: Garnets (Did you get it)<br />

Peter Perkins<br />

Email: peterandvalerie@perkins29.freeserve.co.uk<br />

5 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Dear Editor<br />

To keep you up to date with the changes taking place<br />

as English Nature is replaced by Natural England you<br />

may be interested to see the press release at<br />

www.defra.gov.uk/news/2006/060426c.htm which<br />

announces the appointment of Board members to<br />

Natural England (the body that will replace English<br />

Nature, the Countryside Agency and the Rural<br />

Development Service in October 2006). Natural<br />

England’s Board is the equivalent of English Nature’s<br />

Council which some of you may be familiar with and<br />

on which Professor Chris Wilson and most recently<br />

Professor Malcolm Hart have sat and which has<br />

played a key role development of high level strategy<br />

and priority setting.<br />

Dr Colin Prosser<br />

Head of Geology<br />

English Nature<br />

01733 455213<br />

Sir Martin Doughty, the Chair Designate of Natural<br />

England said: “I am delighted that we have a Board with<br />

such a wealth of expertise, experience and knowledge. Among<br />

its members are leading ecologists, lawyers, upland and<br />

lowland farmers, recreation and access experts and academics.<br />

I believe that we have an excellent team to drive forward<br />

Natural England’s purpose, ensuring that the natural<br />

environment is conserved, enhanced and managed for the<br />

benefit of people now and in the future.”<br />

Dear Editor<br />

Whilst I don’t intend to add to the “howler” debate<br />

again, I offer this as an indication of the need for<br />

better geoscience education in the media.<br />

Holy misunderstood!<br />

“... As far as we know, this is the only planet that sustains life<br />

and yet we’re beginning to understand that we live on a<br />

dangerous planet. We build homes and cities on rock plates<br />

that shift and collide as they float on molten magma...”<br />

(Quote from The Rt. Rev. Tom Butler. Radio 4<br />

“Thought for the Day”, 11th October 2005)<br />

Pete Loader<br />

Email: peteloader@yahoo.co.uk<br />

From the Primary Committee<br />

Geographical <strong>Association</strong> Conference<br />

Primary Committee Report<br />

For many years the Primary team have delivered workshops at the ASE<br />

annual conferences, relating to minerals, rocks, soils etc. Although part<br />

of the <strong>Earth</strong> science content of the primary National Curriculum is<br />

found within <strong>Science</strong> there is also much within Geography.<br />

Over recent years the Primary team have been fostering their relationship<br />

with the Geographical <strong>Association</strong> and this resulted in the<br />

team facilitating a very successful Rivers workshop at the Geographical<br />

<strong>Association</strong> conference last year. This year we were invited to repeat a<br />

similar workshop at their conference in Manchester in April. Three<br />

members of the Primary team facilitated, offering a practical and very<br />

“hands on” session. Participants were given an initial example of how<br />

the evolution of a river might be demonstrated in a classroom, using<br />

everyday equipment (rather than specialist resources). They then<br />

worked in groups, each aided by one of the team. They were provided<br />

with a variety of equipment and asked to work together to investigate<br />

how they might do this within their own school environments –<br />

depending on the facilities they might have. Finally, the groups demonstrated<br />

their own ideas to each other, and discussed the different methods<br />

that had been devised.<br />

The workshop usually uses running water to provide the “river”,<br />

however none was available. We were able to overcome the potential<br />

difficulties of this thanks to the ingenuity of the facilitators, together<br />

with other colleagues present, and indeed also to the participants. We<br />

incorporated the lack of running water into the activities, giving them<br />

an extra dimension and the participants a further task to solve. We feel<br />

it was so successful that in future this will be incorporated into the<br />

Rivers workshop, and not all groups will use running water.<br />

The workshop was fully booked and was very well received by the<br />

participants, who expressed the feeling that it was much better to actually<br />

do something rather than sit and listen. We were aided in the facilitation<br />

of the workshop within a different situation from normal, by<br />

the fact that we have built up a good relationship with the Geographical<br />

<strong>Association</strong> and its staff, who went out of their way to enable its<br />

smooth running.<br />

In order to continue and to build on this successful liaison, we have<br />

one team member who is now on the Geographical <strong>Association</strong> Early<br />

Years and Primary Phase Committee, and involved in the Geographical<br />

<strong>Association</strong> branch in their region.<br />

Two photographs of the workshop have been included in the latest GA<br />

Magazine, and can be seen on their website under Conference 2006<br />

www.geography.org.uk/download/GA_Conf06PhotoSupplement.pdf page 17.<br />

Niki Whitburn<br />

ESTA Primary Co-ordinator<br />

Senior Lecturer, Bishop Grosseteste College.<br />

Email: farfalle@btinternet.com<br />

www.esta-uk.org<br />

6


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

From the Chair – Steady Progression<br />

Council meetings were held in April and July and I’m<br />

pleased to report that, by and large, we’re continuing to<br />

make steady progress. I’ll mention some of the highlights<br />

here and gloss over the tedious bits.<br />

Some great news to start with. We’ve secured funding<br />

from the Petroleum Exploration Society of Great<br />

Britain (PESGB) over the next 3 years which will help<br />

to reduce your costs when attending the annual Course<br />

and Conference. There is also provision to develop further<br />

our web-based <strong>teaching</strong> and learning resources<br />

such as GEOTREX. By sharing the funding between<br />

Conference, which is our flagship event, and resource<br />

development, every one of you should benefit from<br />

PESGB’s generosity.<br />

Membership numbers are remaining fairly static at<br />

around 530, with only a small annual turnover of members.<br />

It is particularly encouraging to see that several<br />

newly-qualified teachers are joining ESTA for the first<br />

time and we are also pleased to report that the publicity<br />

campaign we mounted last year has attracted some<br />

additional corporate members. Whilst on the subject of<br />

membership, we discussed the pros and cons of providing<br />

an automated system such as PayPal, but concluded<br />

that it was not appropriate at the present time.<br />

In response to suggestions made by those who<br />

attended the A-Level Workshop last year, Council has<br />

agreed to make the GEOTREX database and past issues<br />

of Teaching <strong>Earth</strong> <strong>Science</strong>s available only to members. We<br />

have tried to strike a balance between ease of access and<br />

providing value for members, by placing these<br />

resources under password-protection on the website. If<br />

the thought of having to remember yet another<br />

wretched password fills you with dread – fear not. All<br />

you have to type in when the dialogue box requests<br />

your User name and Password is “esta” on both occasions.<br />

We’ll try it for a trial period of 6 months and then<br />

review the situation.<br />

Past issues of Teaching <strong>Earth</strong> <strong>Science</strong>s (as far back as<br />

v.26.3, 2001) can now be found in the ‘Magazine’ section<br />

of the website, along with a list of contents to<br />

enable you to locate particular articles. Whilst generating<br />

this list I was struck by just how much good stuff is<br />

tucked away in those 16 issues and has probably been<br />

forgotten. It may well be worthwhile taking a quick<br />

look to see what is available and now downloadable.<br />

The annual Course and Conference is never far<br />

from our minds as we’re either recovering from the latest<br />

or preparing for the next. I was disappointed to learn<br />

from the authorities at Bristol University that the Wills<br />

Memorial Building, location for our gathering in September,<br />

will be shrouded in scaffolding and plastic<br />

sheeting for most of 2006. This magnificent Gothic<br />

building is undergoing a major external restoration, but<br />

we have been assured that it is ‘business as usual’ on the<br />

inside. Arrangements for the Conference are now virtually<br />

complete, so send in your application form and<br />

keep an eye on the ‘Bristol 2006’ section of the website<br />

for those inevitable last minute changes.<br />

This is my last contribution as Chairman because I<br />

complete my 3-year stint in September and hand over<br />

to Dawn Windley at the Bristol Conference. It’s been<br />

an interesting journey into the world of geoscience<br />

education which I’ve thoroughly enjoyed and I’d simply<br />

like to thank you all for your support and encouragement<br />

along the way.<br />

Martin Whiteley<br />

For a trial period, we are putting GEOTREX and<br />

past issues of Teaching <strong>Earth</strong> <strong>Science</strong>s under<br />

password protection on the ESTA website.<br />

Pssst… don’t forget…<br />

the word is… esta<br />

These resources have cost thousands of pounds<br />

to develop and we want to capture their value<br />

for ESTA members.<br />

7 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Teaching Palaeontology Using Raw Data<br />

from the Internet: The Example of<br />

www.asoldasthehills.org<br />

LUCY A MUIR, JOSEPH P. BOTTING AND ROY BARLOW<br />

The Internet is an enormous source of information, but distinguishing the reliable from the<br />

unreliable can be very difficult. Using it as a vast textbook is therefore problematic, but the<br />

Internet can be an extremely worthwhile tool for more focused activities. In particular, we want to<br />

demonstrate its use as a source of raw scientific data, which can form the basis of exercises and<br />

projects at a variety of levels.<br />

This article is focused on our website about the<br />

palaeontology of the Builth-Llandrindod Inlier of<br />

Powys, central Wales. Although <strong>teaching</strong> was not<br />

initially a priority, we have come to appreciate the possibilities<br />

and are interested in developing them. The site is,<br />

we believe, unusual in that it explicitly aims at an audience<br />

ranging from those with an interest in palaeontology<br />

but little knowledge to established academics and<br />

researchers. We provide raw data and interpretations<br />

based upon them, allowing readers to draw their own<br />

conclusions. The data can also be used as material for a<br />

variety of <strong>teaching</strong> exercises. Below, we give some practical<br />

suggestions for how this could be done.<br />

The ‘Old as the Hills’ website<br />

The Builth Inlier, which forms the area around the<br />

towns of Builth Wells and Llandrindod Wells, contains<br />

a succession of Ordovician rocks amidst the Silurian of<br />

mid-Wales. The area is famous for its trilobites (around<br />

60 species), and was the location for Peter Sheldon’s<br />

classic study of gradual evolution (Sheldon, 1987). It is<br />

also the home of the earliest published trilobites, Trinucleus<br />

fimbriatus (then called ‘Trinucleum fimbriatum’)<br />

and Ogygiocarella debuchii (then thought to be a flatfish),<br />

described by Edward Lhwyd in 1698. The inlier also<br />

Figure 1 www.asoldasthehills.org<br />

contains at least forty sponge species; only three are<br />

known from the rest of the Welsh Ordovician. (This is<br />

probably because it is almost the only place in Wales<br />

studied by a sponge expert during the last hundred<br />

years – there are many more sponges waiting to be discovered.)<br />

In addition, there are substantial graptolite,<br />

brachiopod, ostracod, echinoderm, bryozoan and mollusc<br />

faunas, with occasional worms, cnidarians and<br />

problematica. The ‘Old as the Hills’ website is an<br />

attempt to bring this treasure-trove to the attention of<br />

the wider world.<br />

The site was created in early 2005 by Roy Barlow, Joe<br />

Botting and Lucy Muir, as an extension of their collaboration<br />

on an exhibition of fossils from one site in the<br />

inlier. The initial idea to set up a website was Roy’s,<br />

who is responsible for the design and overall ‘look’ of<br />

the site. The content was primarily written and drawn<br />

by Joe, with some input from Lucy. Joe and Lucy are<br />

both palaeontologists, currently at The Natural History<br />

Museum, London, and Roy is a graphic designer currently<br />

at the University of Cambridge. Roy possesses<br />

the artistic and IT skills to create an attractive and functional<br />

site, while Joe and Lucy have sufficient palaeontological<br />

knowledge and experience to be authoritative.<br />

All three maintain the website entirely as a hobby.<br />

The site is not aimed at any particular group, but we<br />

hope that anyone, whether complete beginner or professional<br />

palaeontologist, will find something useful. In<br />

some ways, this is difficult – how do we explain things<br />

in such a way that beginners aren’t put off, and professionals<br />

don’t feel patronised In other ways, it’s easy –<br />

whatever we put on the site will be useful and at the<br />

right level for someone. Part of the way we have dealt<br />

with the issue is to have separate divisions of the site for<br />

different audiences, although in reality, the divisions are<br />

soon blurred. For example, there are a number of essays<br />

dealing with topics such as how fossils are preserved and<br />

how to identify various types of fossil. No professional<br />

palaeontologist needs to read a basic essay on these matters...<br />

unless, that is, they have a purely biological background<br />

and perhaps study large vertebrates. Conversely,<br />

the taxonomic database containing the publication his-<br />

www.esta-uk.org<br />

8


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

tory of every named species described from the Builth<br />

Inlier is unlikely to be useful to someone without much<br />

knowledge of palaeontology – unless, through curiosity,<br />

a student explores the way it is arranged, and inexplicably<br />

gains a deeper understanding of how taxonomy<br />

functions in the real world. Much of the learning experience,<br />

after all, comes from exploring the unintuitive<br />

and difficult, and becoming familiar with it. In our opinion,<br />

what a student may gain from even the most esoteric<br />

parts of the site may not be easily definable, but can<br />

be a vital part of their development.<br />

The site consists of four parts: Introduction,<br />

Research, Image Gallery and Forum. The Image<br />

Gallery contains pictures from the exhibition that preceded<br />

the website, as well as other photographs and<br />

reconstructions. In due course we hope this will contain<br />

photographs and drawings sent in by readers, and<br />

pictures of scenery. On the Forum, anyone can make<br />

comments, ask for help with identifying fossils or discuss<br />

any aspect of palaeontology. We also use this space<br />

to announce updates to the website.<br />

The Introduction is the section of the site that will be<br />

most attractive for the inexperienced, including basic<br />

information about the Builth Inlier, links to essays on<br />

various palaeontological topics and information about<br />

the people involved. It also contains what is, for beginners,<br />

possibly the most useful article on the site – the<br />

Beginners’ Guide to Fossilologizing. This gives details of<br />

basic geological equipment, collecting etiquette and<br />

care of collections. The emphasis is on responsible collecting,<br />

having an understanding of what one is doing<br />

beyond the act of collecting itself, and of course having<br />

fun in the process.<br />

The Research section is primarily for the more experienced<br />

palaeontologist, and contains the bulk of the<br />

information on the site. It contains a brief history of<br />

work in the area and a bibliography of scientific publications,<br />

a detailed stratigraphy (including range charts<br />

for graptolites and other groups), suggestions for possible<br />

student projects, a database of all the species<br />

described from the inlier, with references, and an illustrated<br />

faunal list extending to well over three hundred<br />

species at the time of writing.<br />

The continually updated faunal list contains every<br />

species from the inlier in the scientific literature, and<br />

every species that we ourselves have found – in other<br />

words, the nearest we can get to the total fossil assemblage.<br />

Most species are illustrated by idealised drawings.<br />

The list is a useful tool on several levels. Firstly, it could<br />

be printed and used for identifications in the field or laboratory.<br />

Although many of the species illustrated are so<br />

far known only from the Builth Inlier, some (especially<br />

the graptolites, brachiopods and trilobites) are known<br />

more widely. Secondly, the drawings show the range of<br />

form in the groups that are represented in the area – for<br />

example, there are representatives of at least five orders of<br />

trilobites. This aspect is not particularly important scientifically,<br />

but potentially very useful in <strong>teaching</strong>. Thirdly,<br />

and most soberingly, it is interesting to compare the<br />

number of species described in the scientific literature<br />

with the total number that have been found. For the<br />

sponges and echinoderms, all the species either have<br />

been described (mostly by a certain J. Botting) or are in<br />

the process of being prepared for publication. The trilobites,<br />

planktonic graptolites and brachiopods are fairly<br />

well known, with about eighty to ninety percent of the<br />

known fauna having been described from the inlier. For<br />

the other groups the picture is slightly less rosy. None of<br />

the six species of gastropod or fifteen species of dendroid<br />

graptolite have been described, and perhaps one species<br />

of bryozoan out of over twenty. Only eight of the thirtyone<br />

(and rising) species of ostracod have appeared in scientific<br />

publications.<br />

In total, less than forty percent of the fossil species in<br />

the inlier have been described. Given that the Builth<br />

Inlier is a classic and intensely studied area, this is really<br />

rather worrying. If our state of knowledge for the<br />

Builth Inlier is typical for that of the fossil record as a<br />

whole, we literally don’t know the half of what’s out<br />

there. There are also statistical reasons, based on comparisons<br />

of the Builth Inlier faunas with those in nearby<br />

areas and on the distribution patterns of species within<br />

the area, to believe that the list is not remotely<br />

approaching completion for many groups. Every field<br />

trip yields several new species, and there is no sign that<br />

we are running out of things to find.<br />

Teaching possibilities<br />

The main aspects of the site we want to emphasize are<br />

as follows:<br />

● the completeness and accuracy of the raw data is<br />

unusual, to say the least, among similar public access<br />

sites, with much of the information unpublished;<br />

● the presentation and approach used in the site is<br />

accessible to any interested parties;<br />

● elements such as the reconstructions are imaginative<br />

Figure 2<br />

Trinucleus<br />

fimbriatus:<br />

drawing from the<br />

faunal list.<br />

© JOE BOTTING<br />

9 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Figure 3<br />

A typical<br />

ecosystem<br />

reconstruction, of<br />

a shallow-water<br />

habitat.<br />

© JOE BOTTING<br />

to problems with preservation, or are there clear differences<br />

that must reflect the original communities<br />

This one’s for more advanced students.<br />

● Stratigraphy: the range charts, combined with the<br />

geological history, present a detailed case study in<br />

which there are many potential exercises. For example,<br />

the students could be asked to use the faunas<br />

presented to divide the sequence into three or four<br />

biozones, with a detailed discussion of their reasoning.<br />

This requires them to consider elements from<br />

the basic distribution patterns of the groups, to the<br />

reliability of the record (are sponges a good group to<br />

use), environmental preferences for any given<br />

group, and so on.<br />

extrapolations to some extent, but also based as<br />

firmly as possible in the reality of the fossil faunas;<br />

● in the open presentation of data and interpretations,<br />

we actively invite the reader to be critical, and to<br />

hypothesize;<br />

● it gives students direct access to palaeontological<br />

research data, and introduces them to the ways<br />

of analysing and interpreting it, without oversimplification.<br />

These lead to several possibilities for the <strong>teaching</strong> of<br />

palaeontology, and related elements in geology and<br />

biology. The following are suggestions for specific<br />

activities that use the information in the site for inspiration,<br />

or as a detailed basis, but they are by no means<br />

exhaustive. We encourage you to be creative in designing<br />

exercises, and are happy to help if you have ideas<br />

that you wish to develop.<br />

● Taxonomy: use the faunal list directly to attempt to<br />

divide a group or groups (e.g. trilobites, graptolites)<br />

into taxonomic groupings at various levels.<br />

● Preservation: use the images, and the essay on fossil<br />

preservation (ideally as well as specimens), to investigate<br />

the changes that take place during fossilisation.<br />

How does the preservation of a trilobite differ from<br />

that of a graptolite, or a sponge This is potentially<br />

open-ended, going into ever-greater detail. Ultimately,<br />

it can lead to an understanding of how representative a<br />

fossil fauna may be of the original community.<br />

● The ecological/environmental reconstructions offer<br />

the opportunity for a great deal of debate over their<br />

accuracy. Which aspects do the students find convincing<br />

Which are speculative, or likely to be incorrect,<br />

and why How does an understanding of fossil<br />

preservation affect the reconstructions<br />

● Ecology: how does the fauna being revealed compare<br />

with modern ecosystems in similar environments<br />

Are the differences between them potentially all due<br />

Perhaps most importantly of all, using the site in any<br />

meaningful way introduces the students to information<br />

that is real scientific data, rather than a textbook presented<br />

for them to learn from. It is not an exercise in<br />

learning facts so much as a prompt for expanding their<br />

awareness and comprehension of the meaning of data<br />

and information, and how it can lead to a better overall<br />

understanding of the subject. In our opinion, recent<br />

<strong>teaching</strong> policy has often suffered from an emphasis on<br />

examinations, and simply learning enough to pass them.<br />

We are more interested in helping students to develop<br />

independent and analytical thought. While sites such as<br />

ours cannot provide the information needed to fulfil curriculum<br />

requirements, they can help to encourage and<br />

inspire students at all levels, by deepening their understanding<br />

of how the science really works. Ultimately, it<br />

both helps the student to understand difficult concepts,<br />

and shows them why they are learning them.<br />

We invite suggestions and discussion regarding ways<br />

to improve the <strong>teaching</strong> potential of the site.<br />

Lucy A Muir, Department of Palaeontology,<br />

Natural History Museum,<br />

Cromwell Road, London, SW7 5BD<br />

Email: l.muir@nhm.ac.uk<br />

Joseph P Botting, Department of Learning,<br />

Natural History Museum,<br />

Cromwell Road, London, SW7 5BD<br />

Email: joe@asoldasthehills.org<br />

Roy Barlow, Photographic and Illustration Service,<br />

Old Examination Hall, New Museums Site,<br />

Free School Lane, Cambridge, CB2 3RS<br />

Email: roy@asoldasthehills.org<br />

References<br />

Lhwyd, E. (1698) Part of a Letter from Mr. Edw. Lhwyd<br />

to Dr. Martin Lister, Fell. of the Coll. of Phys. and R.S.<br />

concerning several regularly Figured Stones lately<br />

found by him. Philosophical Transactions of the Royal Society,<br />

20(243), pp. 279-280.<br />

Sheldon, P.R. (1987) Parallel gradualistic evolution of<br />

Ordovician trilobites. Nature 330, pp. 561-563.<br />

www.esta-uk.org<br />

10


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Katla-Clysmic! – Managing<br />

a Hazardous Environment<br />

IAN K HARDIE<br />

Iceland is a raw and spectacular country that contains an extraordinary variety of geology and<br />

geography. Iceland inspires all who visit this beautiful island that sits astride the northern end of<br />

the Mid Atlantic Ridge.<br />

Iceland, however, has more than its fair share of natural<br />

hazards as a consequence of its rich set of physical<br />

processes and forms. Volcanic eruptions (of<br />

many types), winter storms (with the ferocity to tear off<br />

the tarmac from roads and throw it aside like an old carpet)<br />

and river floods (where the discharges are measured<br />

in 000’s of cumecs) are only some of the natural<br />

events that regularly occur; Iceland certainly is rugged<br />

and, most definitely, “in the making”; a physical geographer’s<br />

and geologist’s paradise. Further, in April, 2006,<br />

a fairly new natural hazard for the country engulfed<br />

areas of Western Iceland; grassland fires. After an<br />

unusually dry winter, the vegetation was tinder dry and<br />

for days the fires burned (until the more typical rains<br />

returned to dowse the flames!).<br />

For resident Icelanders (and the growing number of<br />

seasonal visitors) the combination of natural forces,<br />

their processes and forms creates an environment that<br />

must be understood and managed if the security of people<br />

is to be attempted. Fortunately, Iceland has the<br />

organisation AVRIK, The Civil Defence of Iceland.<br />

AVRIK has divided Iceland into 27 “Police Areas”.<br />

Each of these Police Areas has a Civil Defence Committee.<br />

It is their job to carry out all procedures as<br />

developed by AVRIK. This organisation is the government<br />

agency responsible for,<br />

“ ...disaster preparedness and response.”<br />

There are 3 particular aspects of the work of AVRIK<br />

that are most important:<br />

● RISK ANALYSIS: To identify areas where particular<br />

types of natural disasters are potential hazards to<br />

humans/human activities;<br />

● MITIGATION: To take action to decrease and<br />

minimise the impact of an identified natural disaster.<br />

● COORDINATION: To develop plans and then<br />

organise, train and manage all persons with responsibility<br />

in the Civil Defence of Iceland.<br />

In each of Iceland’s 27 Police Areas, all potential natural<br />

disasters have undergone risk analysis, mitigation and<br />

co-ordination. Every activity and aspect of each community<br />

is evaluated; what could happen; what could be<br />

done to minimise the impact of this event (on people,<br />

property and infrastructure) and is there a well co-ordinated<br />

plan to deal with all eventualities<br />

Fortunately, Icelanders have a very strong and deep<br />

sense of community and local people work very willingly<br />

with the earth scientists in order that everyone’s<br />

knowledge can be shared, theoretical and practical.<br />

As a result of all this advance analysis and “disaster<br />

preparedness”, each of Iceland’s 27 Police Areas now<br />

has an all important Orange Folder. This orange folder<br />

contains all the documentation needed instantly when<br />

a red alert situation develops and action has to be taken.<br />

JÖKULHLAUPS<br />

One particular type of natural hazard experienced in<br />

Iceland is the jökulhlaup. A jökulhlaup is a glacial flood<br />

resulting from sub-glacial volcanic activity. As volcanic<br />

activity increases beneath an icecap, a vast quantity of<br />

meltwater begins to accumulate, trapped between the<br />

volcanic crater and the underside of the icecap. With<br />

further melting of the ice, the icecap is slowly lifted up<br />

until such time as the trapped water finds an escape<br />

route; with great fury, a jökulhlaup then begins. Such<br />

floods carry enormous quantities of both grey/black<br />

meltwater (choked with glacial silts and moraine) and<br />

blocks of ice the size of vehicles and small houses.<br />

There have been at least 20 jökulhlaups (glacial<br />

floods) since the Settlement of Iceland in 974 A.D. The<br />

most recent major Icelandic jökulhlaups occurred in<br />

1996 and 1998 (with a minor one in 2004). They all<br />

occurred in south east Iceland, under the Vatnajökull<br />

icecap close to the Skaftafell National Park. The volcano<br />

Grímsvötn was the underlying cause. At its height,<br />

50,000m 3 of water was discharged every second<br />

(although only for a short time). The outlet route of<br />

this water from the Vatnajökull icecap was the<br />

Skeioarárjökull glacier, a piedmont glacier with a snout<br />

edge of around 18kms wide. A wave of water between 3<br />

to 4 metres high and over half a kilometre wide<br />

advanced, thick with silt, moraine and ice. Awesome in<br />

its power as it was, as a result of monitoring and management,<br />

the Skaftafell National Park Rangers were<br />

able to gain a high vantage point, pull up a seat... and<br />

enjoy the show! However, despite there being no<br />

human casualties, bridges and the road system was<br />

severely damaged along with the fibre optic communication<br />

link.<br />

But without the monitoring and the establishment<br />

of systems to mitigate the effects of a jökulhlaup, the<br />

11 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

consequences for lives, property and livelihoods could<br />

be totally devastating. With this in mind, the potential<br />

jökulhlaup from Katla volcano beneath Mýrdalsjökull<br />

icecap is being very impressively managed.<br />

MÝRDALSJÖKULL AND KALTA VOLCANO<br />

JÖKULHLAUP<br />

For students of geography and geology, a visit to Iceland<br />

on a Study Tour provides the opportunity to understand<br />

fully natural forces and to appreciate the power of<br />

nature and the need to work with it. There are many<br />

examples of this to be appreciated in Iceland, each fascinating<br />

to see, interesting to appreciate and so important<br />

to understand. Iceland is the ideal destination for<br />

students of geography and geology in order that they<br />

gain an understanding of just how important their<br />

knowledge and understanding is in being able, through<br />

its application, to allow people to live “safely” in areas of<br />

natural hazard.<br />

The predicted jökulhlaup from the Mýrdalsjökull<br />

icecap is an excellent case study with which students<br />

can engage. This is an easily accessed area out along the<br />

south coast of Iceland, about a 2 hour drive east of<br />

Reykjavík. This jökulhlaup is imminent!<br />

Figure 1 shows the Mýrdalsjökull icecap with Katla<br />

volcano sitting east of centre of it. This icecap has many<br />

glaciers descending from it e.g. Solheimajökull. It is<br />

beneath this massive icecap that sub-glacial volcanic<br />

activity is presently taking place. Katla volcano is said to<br />

be “well overdue” (based on its past pattern of eruptions)<br />

and it is expected that in the next 3 - 4 years a<br />

jökulhlaup will occur.<br />

There are three possible routes that the waters of the<br />

jökulhlaup could take (shown by arrows 1, 2 and 3 on<br />

Fig 1). Routes 1 and 2 are the most likely. In these cases<br />

the waters of the jökulhlaup would invade the Mýrdalsandur<br />

and the Sólheimasandur/Skógarsandur respectively<br />

on the south coast of Iceland. There is a small<br />

percentage chance that the jökulhlaup would take<br />

Route 3. Such knowledge and predictions are only possible<br />

as a result of geologists, glaciologists, seismologists,<br />

hydrologists and geographers using their unique<br />

skills and understanding; it’s a most impressive demonstration<br />

of the application of <strong>Earth</strong> <strong>Science</strong>s at the physical/human<br />

interface.<br />

This aerial picture looks northwards over the<br />

Mýrdalsjökull icecap. The “bent arm” shape of the<br />

magnificent Solheimajökull glacier can be clearly seen.<br />

At the head of this glacier, as it spills off the Mýrdalsjökull<br />

icecap, the ice is estimated to be approaching<br />

700m thick. The potential for damage from a jökulhlaup<br />

is obvious. Lives, property and livestock are all at<br />

risk. Another major impact could be on the water supplies<br />

to these communities. The economic consequences<br />

for the country are huge. Running east/west<br />

across the immediate foreground of the above picture is<br />

the “1” road, the main “ring road” around Iceland. This<br />

road is the main transport link for many eastern and<br />

north eastern Icelandic communities, bringing in food,<br />

supplies and fuel.<br />

Figure 1<br />

The above picture shows the glacial meltwater river<br />

from the snout of the Solheimajökull glacier. The glacier<br />

can be seen in the far distance with the Mýrdalsjökull<br />

icecap behind, on the horizon. Route 2 of the<br />

potential jökulhlaup (see map above) would come<br />

down this valley, completely destroying the glacier and<br />

reshaping the landscape significantly, washing out<br />

moraines and fluvio-glacial features (including the<br />

moraine ridge from the Little Ice Age of the 1600’s).<br />

The massive boulder in the foreground (about 1m<br />

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12


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

high) would be like a piece of gravel to the advancing<br />

wall of glacial floodwater in a jökulhlaup.<br />

If Route 3 was to be taken by the jökulhlaup (see Fig<br />

1) then it would be down this valley of the Markarfljót<br />

River that its water would travel. This view taken from<br />

the top of Stóra Dímon, shows the Mýrdalsjökull icecap<br />

in the far distance (the icecap beneath which Katla<br />

volcano sits). The present scene, with its magnificent<br />

braided river channels with its eyots (or aits), temporary<br />

islands, would be just a little disturbed for quite a while!<br />

The volume of water that can be expected in a “worst<br />

scene scenario” for the predicted Katla jökulhlaup is an<br />

amount of meltwater of between 200,000 and 300,000<br />

cubic metres of water being discharged per second and<br />

for a period of several hours. It is estimated that the<br />

glacial floodwaters could reach the low-lying/coastal<br />

areas in between 1 to 4 hours (with the possibility of<br />

this also causing a tidal wave that would come back<br />

ashore). The potential damage that this wave of glacial<br />

meltwater could cause, rushing down from the mountains,<br />

along the valleys and to the sea, is immense.<br />

MONITORING SYSTEMS<br />

The evidence for a likely eruption of the Katla volcano<br />

and a resultant jökulhlaup is:-<br />

● The Katla volcano is warming up;<br />

● Mýrdalsjökull has many glacial meltwater cauldrons<br />

forming within it;<br />

● Mýrdalsjökull icecap is lifting up (suggesting magma<br />

is rising beneath the glacier);<br />

● <strong>Earth</strong>quakes and earth tremors are much more frequent,<br />

often continuous.<br />

Recently it has been quite “whiffy” beside the outlet<br />

meltwater river from Solheimajökull due to the<br />

increased amount of volcanic activity from Katla. As<br />

this volcano awakens beneath the icecap, escaping volcanic<br />

gases from its vents are carried away in solution in<br />

glacial meltwater. Some of this meltwater travels underneath<br />

Solheimajökull glacier to its snout – hence the<br />

whiff!<br />

The photograph shows a measuring station on the<br />

outlet river from Solheimajökull (with the “1” road<br />

seen to the left). Conductivity measurements of the<br />

glacial meltwater are helping to gauge the changes in<br />

dissolved gases that in turn indicate changes in the volcanic<br />

activity of Katla. The measurements are remotely<br />

sensed and monitored. It is measures such as this that<br />

indicate the concern of the Icelandic Authorities to take<br />

fully on board their responsibilities for:<br />

“ ... disaster preparedness and response.”<br />

In the case of Katla, the dormant/active volcano that<br />

sits beneath the Mýrdalsjökull icecap, the natural events<br />

that could result from Katla erupting include:-<br />

● Ash clouds and ash fall;<br />

● Gas emissions; sulphur and fluoride;<br />

● <strong>Earth</strong>quakes (initially and afterwards);<br />

● Floods (rapid then subsiding);<br />

● Lightning (from within the ash cloud).<br />

The impacts of these natural events could cause trouble<br />

for many aspects of life and living in the valley.<br />

MITIGATING MEASURES<br />

In August 2004 a series of major community meetings<br />

were held where the causes of the potential jökulhlaup<br />

were described and the probable consequences were<br />

graphically shown. Computer simulations were used to<br />

indicate the three possible routes that the floodwaters<br />

from the jökulhlaup could take; the simulations also<br />

indicated the likely volumes, flow rates and depths of<br />

floodwater along each of the likely “corridors”; this was<br />

an impressive example of risk assessment using many<br />

techniques to simulate the likely event(s).<br />

In March 2006, in the Fljótshlío Valley (Route 3 –<br />

Fig 1), a practise evacuation was held in order to evaluate<br />

emergency procedures and to fine tune them if necessary;<br />

they were! One small community was not<br />

telephoned to request that the residents beat a hasty<br />

Continued on page 14<br />

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TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Should <strong>Earth</strong> <strong>Science</strong> Teachers Worry<br />

About Creationists’ Ideas<br />

DR ANTONY WYATT<br />

In the United States there have long been campaigns to promote the <strong>teaching</strong> of creationism or<br />

intelligent design in science classes, despite court decisions that have ruled such actions<br />

unconstitutional. Similar trends in Britain, and a growing number of evangelical Christian and<br />

Muslim science students arguing that statements from the Bible or Koran should be taken as<br />

scientific fact, are prompting concern.<br />

What have creationism, scientific creationism,<br />

or intelligent design (ID) to do with How can such pressure be countered To begin with I<br />

Terminology<br />

<strong>teaching</strong> <strong>Earth</strong> <strong>Science</strong> At first sight it may think that we need to consider our use of language.<br />

just seem like a bit of fuss and bother when discussing There are many words that we bandy about rather<br />

evolution, which can only account for a small fraction loosely, and this is seized upon, and the meanings perverted<br />

by the creationists (used as a broad term to<br />

of course content; something that causes big problems<br />

for biology teachers, but which can otherwise be include scientific creationists and ID supporters).<br />

ignored. But do not be fooled. In some schools and An obvious word that is often misused is theory. We<br />

colleges the vast majority of students taking science all know that scientific ideas start off as hypotheses, and<br />

courses believe in creationism. Pressure is growing that for a hypothesis to be considered a theory it has to<br />

for theology to take precedence over science.<br />

have been tested, and there has to be no evidence to<br />

Does it matter I certainly think so. I was recently show that it is false. But it is clear that this is not comprehended<br />

by many students. How often do you read<br />

<strong>teaching</strong> a course for an oil company about the origin of<br />

oil and gas. All of the trainees had good science degrees or hear students claim something like “there is no scientific<br />

evidence for evolution, it’s only a theory” Not<br />

from Nigerian universities and all were hoping to work<br />

in the industry. I was shocked when they told me why only does this show ignorance about the scientific evidence<br />

for evolution, it also shows ignorance about the<br />

they did not believe the scientific case that I was setting<br />

out for them. They knew that the oil and gas had been nature of theories. We could start by redoubling our<br />

placed there by God, because they had been told this by efforts to ensure that all students understand the meaning<br />

and use of the term.<br />

their pastor. The word of an unscientific clergyman was<br />

more important to them than decades of scientific There is also a problem with the use of believe and<br />

endeavour. Eventually I managed to get most of them to belief. If I say that I believe in some aspect of science, for<br />

see that the distribution of oil and gas fields is scientifically<br />

predictable, making exploration more than a hit picked up by creationists and used to claim that science<br />

example the end Cretaceous mass extinction, this is<br />

and miss affair, but I don’t know how long it will take is just another belief system, like religion, and that religious<br />

beliefs should be given equal weighting to for their pastor to win them back.<br />

scien-<br />

Continued from page 13<br />

retreat to their designated evacuation centre; this has<br />

now been rectified! Further, each household has now<br />

been issued with a vivid orange Information and<br />

Instruction Sheet (A3 size and double sided!) for reference<br />

in the event of the predicted jökulhlaup.<br />

Other examples of mitigation and to minimise disruption<br />

if Katla does “blow” include:<br />

● Ensuring that the sewerage systems of surrounding<br />

settlements are robust (a health consideration);<br />

● Ensuring that contingency plans have been established<br />

to deal with the many rats that emerge during<br />

and after a volcanic eruption (as a result of the heavy,<br />

sinking volcanic gases into their “dens”!).<br />

Disaster management, therefore, is a major issue in Iceland.<br />

Much of what could happen can be predicted but by<br />

no means it all. Iceland has to be on prepared alert at all<br />

times for all eventualities. Iceland and Icelanders really<br />

do live... “on the edge”; how exhilarating!<br />

Ian K Hardie<br />

Email: ian.hardie@rayburntours.co.uk<br />

www.rayburntours.com<br />

tel: 01569 760854.<br />

Ian is the Geography and Educational Tour Development<br />

Manager for Rayburn Tours. Ian is also a self proclaimed<br />

Icelandophile! For 30 years Ian was a full time<br />

teacher of geography in a large secondary school and he<br />

thoroughly enjoyed planning and leading his own educational<br />

study tours for his pupils. Rayburn Tours now<br />

operates educational tours to many destinations as a<br />

result of Ian’s work for the company; these destinations<br />

include the ever popular Iceland.<br />

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14


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

tific theories in science classes. I can distinguish in my<br />

mind between scientific belief (a theory is based on<br />

observation and experiment and only accepted as long<br />

as there is no negative evidence) and religious belief (an<br />

idea is accepted based on authority, and there may be<br />

evidence to show that it cannot be true), but it is clear<br />

that creationists either cannot distinguish, or deliberately<br />

confuse the two meanings. It would help if there<br />

were two words to differentiate these concepts. I suggest<br />

that unless, and until, agreement is reached on separate<br />

terms, we all do our best not to use belief/believe<br />

in a scientific context.<br />

We should also make clear to our students that it is<br />

not a case of either science or whatever religious text<br />

they follow. Even if, for example, the Darwinian theory<br />

of evolution were to be disproved, it would not prove<br />

the religious creation myths. Both could be wrong.<br />

Creationist viewpoints<br />

Below I consider the attack on science from creationists<br />

who claim to be Christians. This is not to say that we<br />

should ignore other faith positions, but simply to try to<br />

keep the argument within bounds. Creationists are<br />

often subdivided into short-day creationists, who say<br />

we must take the Genesis story literally, and the world<br />

was created in six days, and long-day creationists, who<br />

believe that the order in Genesis is correct, but that the<br />

days are not our normal days, but much longer periods<br />

of time. Of course there are many Christians who think<br />

that the Genesis timetable is just a myth which should<br />

not be taken literally.<br />

There is more to the creationists’ stance than just<br />

anti-evolution. They are anti-science. If you believe<br />

the Genesis story to be true, then science has to be<br />

wrong. How this can be squared with the existence<br />

and use of technology, which depends upon the veracity<br />

of science, I don’t know. Without technology, modern<br />

civilisation could not exist, and most humans<br />

could not survive. I find this a powerful argument for<br />

the truth of science, even if I do think that the world<br />

is far too overpopulated.<br />

How can I make such bold claims, and, if they are<br />

true, why aren’t they more commonly publicised As<br />

shown below, I make them on the basis of my understanding<br />

of <strong>Earth</strong> <strong>Science</strong>. The general lack of understanding<br />

of the subject is one reason why the arguments<br />

are not more commonly made, but it is also because<br />

most people think that the problem is simply one about<br />

evolution, and leave the arguments to a few biologists.<br />

Arguments against the creationist position<br />

My first argument comes from geochronology. We have<br />

a variety of dating techniques, some radiometric, others<br />

depending upon other properties. No serious worker in<br />

the field accepts the creationists’ arguments that all<br />

these methods are flawed, and all flawed in such a way<br />

that different techniques give consistent, but wrong<br />

answers. We may argue about whether the date of the<br />

start of the Cambrian is 542 Ma, or some other figure,<br />

but it is certainly not something less than 4004 BC.<br />

Geochronology shows that short-day creationism is<br />

incompatible with science. Proponents of short-day<br />

creationism must therefore be anti-science.<br />

My second argument comes from geochemistry,<br />

though I suspect that many physicists and chemists<br />

would also claim the rights to the argument. We have<br />

decades of measurements that have produced a clear<br />

picture of the relative distribution of the elements. This<br />

distribution pattern matches that which is predicted by<br />

theories of how stars work. The standard theory is that<br />

all elements that we see today, apart from hydrogen and<br />

helium, were produced within pre-existing stars,<br />

mostly by nuclear fusion reactions. The stars then<br />

exploded, with some of the fragments eventually being<br />

swept up by the developing solar system. Without such<br />

pre-existing stars there could be no elements heavier<br />

than helium in our solar system, except in the sun,<br />

where temperatures and pressures are high enough for<br />

nuclear fusion to occur naturally.<br />

The Genesis story has the sun and stars created on<br />

day four. Apart from the problem of how you have day<br />

and night without the sun, it means that prior to day<br />

four, everything had to be made of hydrogen or helium.<br />

According to the Bible, prior to day four we not only<br />

have water and the solid <strong>Earth</strong>, but also, on day three, a<br />

variety of flowering plants. No doubt petrologists<br />

would be as bemused as botanists to find that their<br />

objects of study were made up only of hydrogen and<br />

helium, but the botanists would also need to explain<br />

how, in the absence of the sun, plants could survive at<br />

temperatures close to absolute zero.<br />

My third argument comes from stratigraphy and<br />

sedimentology. If the sun and moon were not present<br />

until after the first flowering plants, then prior to the<br />

flowering plants there could have been no tidal influences.<br />

The stratigraphic record does not show a major<br />

change in depositional systems some time after the first<br />

appearance of flowering plants. Older rocks show water<br />

transport, and, in relevant places, tidal influences. If we<br />

were to accept the Genesis story then to explain the<br />

rocks we would have to postulate not only some<br />

unknown source of elements, and unknown source of<br />

heat, with the unknown heat source vanishing at exactly<br />

the time that the sun’s radiation first reached the <strong>Earth</strong>,<br />

but also a non-tidal mechanism that gives rise to sedimentary<br />

structures that are identical to tidal deposits.<br />

As an aside, it is worth thinking about the problem of<br />

going from the <strong>Earth</strong> alone in space, to the <strong>Earth</strong> with<br />

orbiting moon, both in orbit around the sun. If this<br />

were a scientific theory, then it would predict major<br />

perturbations at the time of change, which should be<br />

recorded in the stratigraphic record. I can think of no<br />

evidence supporting this, and consider that searching<br />

for such deposits would be similar to the early nineteenth<br />

century geologists search for deposits left by<br />

Noah’s Flood.<br />

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TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

My fourth argument is based on the fossil record.<br />

We should remember that the fossil record is simply a<br />

record of what has been found in rocks of different<br />

ages. It is entirely neutral as to causes. Yes, the fossil<br />

record is best explained by evolution, but it would be<br />

the same if evolution were found to be false. The<br />

order of creation in Genesis (flowering plants, followed<br />

by great sea creatures and birds, followed by<br />

land animals and man) is not compatible with the fossil<br />

record. Arguing against evolution cannot change<br />

this fact. Creationists often claim that because we use<br />

fossils for correlation the fossil record is a chimera,<br />

based on circular arguments. This ignores the fact that<br />

correlation is only possible once the outlines of the<br />

record are clear. As in many other cases, their argument<br />

is based either on ignorance, or deliberate misreading<br />

of the scientific method.<br />

A lot more could be said, but if we were to postulate<br />

long-day creationism as a scientific theory, and test it<br />

against the evidence, it is clear that it would fail on<br />

many counts. It only takes one failure to show that a<br />

theory is no longer tenable. We have more than enough<br />

evidence to show that long-day creationism cannot be<br />

considered as science. To follow long-day creationists,<br />

and argue that the days of Genesis are not normal days,<br />

but that the order as written down is correct, is clearly<br />

anti-science.<br />

What can we do<br />

It is a difficult problem, as people get very sensitive<br />

about their religious beliefs. But it is clear that we cannot<br />

go on as we have in the past century or so, and<br />

ignore the creationists. We owe it to our students to see<br />

that they consider all the evidence. As it is, many of<br />

them are reading distorted ideas about science from<br />

creationist booklets and ending up with a confused and<br />

erroneous understanding. Of course some of the arguments<br />

for science involve more complex thinking than<br />

others, but that is what education (and life) is all about.<br />

There are some obvious questions that can be posed<br />

to students who argue for the creationist viewpoint:<br />

● How can you have day and night (day 1) without the<br />

sun (day 4)<br />

● How can we have the chemicals to make up water<br />

(day 1), minerals and rocks (day 2) before there were<br />

stars (day 4) to produce the elements<br />

● How can plants (day 3) live without the sun (day 4)<br />

for warmth or photosynthesis<br />

If you believe in short-day creationism:<br />

● How do you explain the fact that we find bones and<br />

shells that contain no trace of carbon 14<br />

● How do you explain sequences of up to 13,500<br />

varves in postglacial lakes<br />

If you believe in long-day creationism:<br />

● How could flowering plants (day 3) reproduce<br />

before there were birds (day 5) or insects (not mentioned,<br />

but as land animals presumably day 6) to act<br />

as pollinators<br />

● How can we see galaxies that are billions of light<br />

years away when they were only created after the<br />

flowering plants (which are less than 145 Myr (million<br />

years) old)<br />

I suspect that you would be surprised by some of the<br />

answers you might get to some of these questions. It is<br />

clear to me that many of the creationists that I have spoken<br />

to have a very odd picture of the universe and how<br />

it works. It will be a sad day for education if, by our lack<br />

of action now, we find ourselves having to teach that<br />

odd picture.<br />

Antony Wyatt<br />

Email: antony_wyatt@hotmail.com<br />

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16


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Durham <strong>Earth</strong> Scientists go Back to School!<br />

STUART JONES<br />

A newly developed module at Durham University gives final year undergraduate students the<br />

chance to see what <strong>teaching</strong> is really like. More importantly, it provides valuable key skills for<br />

undergraduates and a <strong>teaching</strong> assistant for teachers who often do not have a degree in geology<br />

but are expected to teach aspects of the <strong>Earth</strong> sciences in the national curriculum. Maybe this is<br />

a route to create greater interest in the <strong>Earth</strong> sciences<br />

Hollywood film makers have long realized that<br />

geology attracts large audiences of all ages with<br />

examples including films like Jurassic Park, Volcano,<br />

Dante’s Peak, The Day After Tomorrow and Apocalypse<br />

Now. Even if the films are permeated with exaggeration,<br />

denial and misplaced alarm, learning more about the<br />

<strong>Earth</strong> is delivering real knowledge and promoting <strong>Earth</strong><br />

sciences.<br />

It is not just film makers that love using geology, the<br />

BBC has long supported the <strong>Earth</strong> sciences and last year<br />

the factual drama Supervolcano examined what would<br />

happen if the Yellowstone supervolcano were to erupt<br />

and the resulting catastrophic event. This was followed<br />

in the same year by the popular science programme<br />

Journeys from the Centre of the <strong>Earth</strong>, which introduced<br />

many more to geology.<br />

The surge in fictional and popular <strong>Earth</strong> sciences<br />

may make you think that the <strong>Earth</strong> sciences are more<br />

popular than ever, but unfortunately the situation<br />

seems to have changed very little. Perhaps the other<br />

sciences have also been suffering more in recent<br />

years, with fewer students studying the pure sciences<br />

as each year passes, which means there are fewer people<br />

who can teach, so fewer will be able to study science<br />

and so on.<br />

In 2002 Simon Singh, popular science writer and<br />

broadcaster, helped to develop the Undergraduate<br />

Ambassadors Scheme (UAS) to help turn about the<br />

declining numbers of university applicants to <strong>Science</strong>,<br />

Technology, Engineering and Mathematics (STEM)<br />

and the corresponding teacher shortages in these subjects.<br />

UAS was designed to introduce science undergraduates<br />

to the world of <strong>teaching</strong> especially in physics<br />

and maths.<br />

As a result, the tried and tested UAS concept has<br />

been adapted and developed for <strong>Earth</strong> sciences. At the<br />

Department of <strong>Earth</strong> <strong>Science</strong>s, Durham University, a<br />

new level three module called <strong>Earth</strong> <strong>Science</strong> into schools<br />

has been developed to encourage <strong>Earth</strong> science and natural<br />

science undergraduates to consider <strong>teaching</strong> as a<br />

career, whilst providing valuable transferable skills<br />

developed in a classroom that would be of use in whatever<br />

career path is followed after leaving university. At<br />

the same time, the module provides teachers with a<br />

knowledgeable and enthusiastic assistant who is able to<br />

offer practical help and engage pupils in <strong>Earth</strong> sciences.<br />

This is the first year of the module at Durham and the<br />

only <strong>Earth</strong> science department nationally that offers<br />

such an option.<br />

The module follows a fairly varied format where the<br />

first term consists of in-house training, tutorials and<br />

classroom preparation. PGCE trainee teachers in science<br />

at Durham assist with tutorials, lesson planning<br />

and role plays, prior to a full day of workshops for a<br />

class of year 8 or year 9 pupils that is led by the undergraduates.<br />

In term two, each undergraduate is paired<br />

with a science teacher in a local school and works<br />

closely with them one half day every week (or equivalent)<br />

for approximately 10 weeks leading up to the<br />

delivery of a special project in school. The module is<br />

designed to operate across all age ranges of school<br />

pupils, from primary to sixth form. The module is<br />

completed by the submission of a portfolio and a presentation<br />

given to invited teachers, based upon the<br />

development of the special project and the underlying<br />

<strong>Earth</strong> science.<br />

There has been no shortage of enthusiasm for the<br />

module amongst the students currently enrolled. The<br />

benefits of the module are becoming widely recognised<br />

in being able to offer key skills that are not attainable<br />

from other modules and also to be better equipped for<br />

future employment through consolidation of learning.<br />

Certainly several of the students have applied for<br />

teacher-training courses as a direct result of this module<br />

and it is a move in the right direction towards<br />

inspiring the next generation about <strong>Earth</strong> sciences.<br />

Student experience<br />

All of the students enrolled on the module realise the<br />

need for lots of bright young science teachers who can<br />

inspire the next generation of students. However, the<br />

module lets students teach without any long-term<br />

commitment on their part. Here three <strong>Earth</strong> science<br />

students, who are enrolled on the module this year,<br />

describe what it is really like.<br />

1. Gareth Roberts<br />

Gareth Roberts is currently in the third year of a fouryear<br />

MSci Geological <strong>Science</strong>s degree at Durham.<br />

What made you choose the module<br />

My initial attraction to the module was to the transfer-<br />

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TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Figure 1:<br />

Year 8 pupils<br />

from a County<br />

Durham school<br />

participating in a<br />

one-day series of<br />

<strong>Earth</strong> science<br />

workshops at the<br />

Department of<br />

<strong>Earth</strong> <strong>Science</strong>s,<br />

Durham University,<br />

delivered by the<br />

undergraduates<br />

registered on the<br />

module.<br />

able skills that could be gained from being in a classroom<br />

and the ability to apply some of my geological<br />

knowledge.<br />

What did you do on the module<br />

I was placed in Sedgefield Community College,<br />

County Durham, where I taught year 8 and year 11<br />

pupils. The teachers were a great help in offering advice<br />

and guidelines to work within, especially for the year 11<br />

pupils. Initially I was just observing classes, but I soon<br />

became involved in classroom activities and practicals,<br />

helping to explain concepts and ideas on an individual<br />

basis. Towards the end of my placement I delivered several<br />

PowerPoint presentations with active demonstrations<br />

about plate tectonics to two differing ability year<br />

11 classes.<br />

Did you enjoy taking part<br />

It is difficult <strong>teaching</strong> a class of 35 13 year-olds and hard<br />

to gain and maintain their attention. You really have to<br />

understand your geology and apply difficult scientific<br />

principles in new and exciting ways. However, the challenge<br />

is most rewarding and the plethora of skills that<br />

you acquire such as interpersonal skills, organisation,<br />

time-management, quick thinking and leadership are<br />

all vital for what ever career pathway I take after completion<br />

of my degree.<br />

Did the module match your expectations<br />

Teaching is exceptionally hard work in constantly having<br />

to stand in front of a class of pupils who really<br />

would rather be elsewhere and perhaps find geology<br />

and rocks boring. My target was to at least to try to purvey<br />

some basic principles and spark some scientific<br />

interest. Mostly I found the pupils to be enthusiastic<br />

and responded much more positively than I thought<br />

they would. The main difficulty was rephrasing a sentence<br />

because the pupils did not understand even<br />

though you have already said it four times. Most pupils<br />

responded better to practical work, but for any lesson to<br />

work, a considerable amount of planning was required,<br />

far more than I expected.<br />

Are you considering a career in <strong>teaching</strong><br />

I have decided not to apply for teacher training after finishing<br />

my four-year degree, although I am really<br />

pleased that I took part in the module. I have seriously<br />

considered <strong>teaching</strong> in secondary school, but now<br />

realise I wish to continue with research.<br />

Would you recommend the module to other<br />

geology students<br />

Definitely – the module is fantastic for all involved. I<br />

have learnt so much from this module and it challenges<br />

you in different ways from a standard lecture course.<br />

Even if you are not necessarily interested in becoming a<br />

teacher as a career pathway it gives you massive<br />

amounts of confidence in public speaking and enables<br />

you to communicate with people from all walks of life.<br />

2. Helen Bonello<br />

Helen Bonnello is in her final year of a four-year MSci<br />

geological sciences degree at Durham and has been<br />

accepted for a PGCE course.<br />

What made you choose the module<br />

I wanted to apply some of the skills I have learnt while<br />

at Durham and have a taster of <strong>teaching</strong>.<br />

What did you do on the module<br />

I was assigned to Hardwick Primary School, County<br />

Durham, where I began by observing year 4 pupils in<br />

their general science classes. After the first week I<br />

started assisting the teacher with general running of<br />

the lessons and helping to explain ideas and concepts<br />

about rocks, minerals and fossils. The teacher soon<br />

realised the benefits of my presence, in having access<br />

to the university facilities and departmental collections<br />

and I was asked to provide demonstrations and<br />

practical materials each week. This proved incredibly<br />

popular with the pupils.<br />

Did you enjoy taking part<br />

I loved it and definitely performed better than I would<br />

have done in a conventional module. However, it was<br />

not an easy choice and <strong>teaching</strong> in a Primary school was<br />

more challenging than I expected. The whole module<br />

has been most rewarding and especially good to see<br />

how well the pupils had taken into account what I said.<br />

My special project involved using rocks, minerals and<br />

fossils to identify key elements of the rock cycle and<br />

<strong>teaching</strong> to the whole class. The pupils were always<br />

responsive, if at times liable to go off on a tangent and it<br />

has certainly increased my levels of confidence in<br />

standing up in front of an audience, even if these were<br />

only 7 year olds!<br />

Did the module match your expectations<br />

I expected far many more difficulties in maintaining the<br />

attention of a class than actually it turned out. The<br />

pupils were always enthusiastic and responded posi-<br />

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TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

tively to all the activities. The teacher informed me that<br />

the pupils looked forward to my lesson each week and<br />

were often excited to know what fossil would appear<br />

from one week to the next. No one can understand how<br />

difficult and tiring <strong>teaching</strong> is until you have taught a<br />

lesson, and perhaps taking undergraduate level geology<br />

and having to dilute many advanced principles and<br />

using the correct terminology really does determine if<br />

you understand the subject in the first place.<br />

Are you considering a career in <strong>teaching</strong><br />

This module has allowed me to attain a more comprehensive<br />

view of <strong>teaching</strong> and promted me to apply for a<br />

middle school PGCE teacher training programme. I am<br />

really looking forward to getting started.<br />

Would you recommend the module to other<br />

geology students<br />

This module certainly helped me to attain a place on a<br />

PGCE teacher training course and offers a valuable<br />

insight into what it would be like to become a teacher.<br />

The toughest component of the course is taking<br />

advanced scientific principles, many of them at a research<br />

level, and having to deliver these in a coherent and<br />

understandable way for the pupils. The 20 questions that<br />

were asked by the pupils about all and everything, but<br />

geology, was more than compensated by the one relevant<br />

question and the sheer satisfaction it offers.<br />

3. Natasha Wallis<br />

Natasha Wallis is in her final year of a Natural <strong>Science</strong>s<br />

degree at Durham and considering <strong>teaching</strong> as a career.<br />

What made you choose the module<br />

It was a spur of the moment decision but was a module<br />

that offered the opportunity to apply your scientific<br />

knowledge and enthusiasm for science generally into a<br />

school classroom – just something that appealed.<br />

What did you do on the module<br />

My school placement was St Bedes Catholic Comprehensive<br />

School, Peterlee, County Durham where I<br />

taught year 10 and year 11 pupils, particularly the<br />

<strong>Earth</strong> Materials component of the chemistry AQA<br />

GCSE syllabus. I was guided by a teacher, but frequently<br />

responsible for planning, <strong>teaching</strong> and implementing<br />

a lesson. Through discussions with the<br />

science teachers my special project was based on revision<br />

aides for year 11 pupils and involved creating<br />

posters on <strong>Earth</strong> material topics that were to be displayed<br />

in the school. Many of the pupils were all too<br />

easily distracted by peer pressure and the posters<br />

seemed to offer a different way of learning. We will<br />

not know if it was successful until August!<br />

Did you enjoy taking part<br />

It was the most demanding module of my time in<br />

Durham, but also the most rewarding.<br />

Did the module match your expectations<br />

All of my expectations have been exceeded with the<br />

pupils’ response over the 10 week period to my <strong>teaching</strong><br />

and their improved learning. Many of the pupils thought<br />

geology was boring – ‘Just looking at rocks Miss, that’s<br />

boring’, and perhaps I have enlightened many to the<br />

wider application of the subject. Although it is tough to<br />

convince all the pupils that science is important and<br />

interesting; the use of exciting practical materials,<br />

demonstrations and appropriate analogies (e.g. geology<br />

and the iPod) has hopefully enticed a few more.<br />

Are you considering a career in <strong>teaching</strong><br />

If I had not considered it before, it certainly is a serious<br />

consideration now. As a Natural science student I perhaps<br />

have a wider background across many of the sciences<br />

and would suit secondary science <strong>teaching</strong>.<br />

Would you recommend the module to other<br />

geology students<br />

Yes, without any reservations. There are no other modules<br />

that provide you with better time management<br />

skills, improved communication, leadership and<br />

improved understanding of science. Beyond all else,<br />

when a pupil tells you ‘Thank you Miss, I really enjoyed<br />

today’s lesson’ you achieve immense satisfaction and<br />

know all the effort was worthwhile.<br />

Early signs are indicating that the module is having the<br />

desired effect of providing broader career options and<br />

improving key skills for the current undergraduates.<br />

Equally, school pupils are becoming more inspired<br />

about <strong>Earth</strong> sciences and may become the next science<br />

ambassadors. Perhaps the latest Hollywood film Ice Age<br />

2: the meltdown, may warm several more students to the<br />

idea of <strong>Earth</strong> sciences.<br />

Dr Stuart J Jones<br />

Lecturer in Sedimentology<br />

Department of <strong>Earth</strong> <strong>Science</strong><br />

South Road<br />

Durham University<br />

Durham DH1 3LE, UK<br />

Email: stuart.jones@durham.ac.uk<br />

19 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Derby Conference Post-16<br />

‘Bring and Share’, September 2005<br />

CHRIS KING<br />

The ESTA conference Post-16 ‘Bring and Share’ session<br />

was abuzz with new ideas and approaches with<br />

inputs from:<br />

● Chris Bedford – Radley College: Visualisation of<br />

geology structures in 3D<br />

● Mandy Winstanley – Luton Sixth Form College:<br />

Revision guides<br />

● Jane Ladson – Highfields School: ‘So you’re starting an<br />

A-level Geology course’ booklet<br />

● Pete Loader – St. Bedes College: Columnar jointing<br />

● Derek Briggs – Educational Consultant: Mix-nmatch<br />

● Ian Kenyon – Truro School: IT quickfire quizzer<br />

demo<br />

● Alan Richardson – Halesowen College: Exercises in<br />

‘Training scientists’<br />

● Jo Conway – Yale College: Swiss roll - edible geology<br />

continues!<br />

● Alison Quarterman – Greenhead College: Bedding<br />

in a box<br />

● Maggie Williams – University of Liverpool: Field<br />

sketch update<br />

● Chris King – Keele University: Plate tectonic animation<br />

● Ben Church – Monmouth School: Introducing<br />

GEOTREX<br />

Many thanks to all those who were able to contribute to<br />

this session – which seems to get better and better year<br />

by year. Unfortunately, many of the inputs this year<br />

didn’t lend themselves to being written up at all (such<br />

as the IT item) or are/will be written up elsewhere in<br />

the pages of ‘Teaching <strong>Earth</strong> <strong>Science</strong>s’. Here, we are very<br />

grateful to Chris Bedford, Derek Briggs and Jo Conway<br />

for their efforts below. The ESTA Conference is in<br />

Bristol this year, (15th - 17th September 2006) – is it<br />

possible that the Post-16 ‘Bring and Share’ could be<br />

even better With your contribution, it can.<br />

Chris King<br />

Email: c.j.h.king@educ.keele.ac.uk<br />

Idea title:<br />

Presenter:<br />

Visualising geological structures in 3-dimensions: hands-on block diagrams<br />

Chris Bedford, Radley College, Abingdon OX14 2HR cmb@radley.org.uk<br />

Brief description: Basic version – write once only:<br />

● Gather empty catering boxes, e.g. of Mars Bars TM , Turkey Twizzlers TM , etc.<br />

● Draw on two sides of a geological structure (e.g. anticline) with marker pen<br />

● Ask students to draw on the third/fourth/fifth side to show outcrop patterns<br />

● This works particularly well when done in parallel with paper exercises on block diagrams<br />

Advanced version – re-writeable:<br />

● Cut HIPS* to fit top and sides of empty catering box (or two photocopier paper box lids<br />

taped together to form a cuboid shape)<br />

● Stick on the HIPS sheets using double-sided sticky-tape<br />

● As for basic version, draw on two sides of a geological structure, then ask students to<br />

draw on the third/fourth/fifth side to show outcrop patterns – but use a whiteboard pen<br />

● Can be rubbed out and re-used as a mini 3-D whiteboard<br />

● This has recently worked exceptionally well in assisting with the visualisation of block<br />

diagram problems<br />

Age range:<br />

Post-16<br />

Apparatus:<br />

Catering boxes of various sizes; photocopier paper box-lids; double-sided sticky-tape;<br />

whiteboard pens; *High Impact Polystyrene sheets (known in the trade as ‘HIPS’ – available<br />

through educational suppliers or friendly CDT departments)<br />

www.esta-uk.org<br />

20


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Idea title:<br />

Presenter:<br />

Mix-n-match (‘The present is the key to the past’)<br />

Derek Briggs, 36 Old Road, North Petherton, Bridgwater, Somerset, TA6 6TG.<br />

Brief description: Bring fossils to life and provoke thought.<br />

Aims: to bring fossils to life by observation and comparison with modern equivalents and<br />

to provoke thought and discussion about their needs, environment(s) and preservation.<br />

Objectives (in order):<br />

● to match fossils and modern equivalents into pairs, recording the number and matching<br />

letter of the specimens<br />

● to give reasons for the pairing (the number of reasons depending on the age/ability –<br />

example reasons could include: general shape; one, two or three matching features per<br />

pair)<br />

● extend to consider ‘life’ requirements and so environment(s) of each fossil on the basis<br />

of the modern equivalent<br />

● go on to build up the ‘big picture’ (e.g. an ancient sea- or landscape)<br />

● suggest explanations for particular feature(s), e.g. occurrence of a plant in a selection of<br />

Jurassic marine organisms; preservation/non-preservation of various parts of the life<br />

forms; etc.<br />

Age range:<br />

Junior – adult<br />

Apparatus:<br />

A numbered collection of fossil items (preferably local and discoverable on field trips) and<br />

matching modern equivalents, identified by letter. Examples could include:<br />

Calamites – horsetail<br />

fossil gastropod – snail/ whelk shell<br />

fossil bivalve(s) – modern bivalve(s) fossil echinoid – modern echinoid<br />

ammonite – Nautilus<br />

fossil seed fern – modern fern<br />

ichthyosaur/ plesiosaur vertebra – modern mammal vertebra<br />

These are initially arranged in two columns, not in matching pairs<br />

Idea title:<br />

Presenter:<br />

Swiss roll – edible geology continues!<br />

Jo Conway, Yale College of Wrexham, Grove Park Road, Wrexham LL12 7AB.<br />

jlc@yale-wrexham.ac.uk<br />

Brief description: Gather a few swiss rolls, cheap ones from the supermarket are fine! It doesn’t matter if they<br />

are chocolate sponge or plain with jam, but avoid the chocolate covered ones!<br />

● Use a knife to mark on the fold axis<br />

● Students can then see the three dimensional aspect<br />

● Use string to measure around the outside of the fold (long distance), and a ruler to measure<br />

the short distance between the same two points, students can then calculate the<br />

percentage shortening.<br />

● Cut the swiss roll at an angle to the vertical, and re-measure long and short distances. If<br />

this is done with many swiss rolls all cut at slightly different angles, then students can<br />

examine the different percentage measurements they get.<br />

● This has provided a very good start to consider EVALUATION of the data they collected<br />

whilst in the field (where they have usually completely disregarded the importance<br />

of making measurements perpendicular to the fold axis!).<br />

● Eat the evidence!<br />

Age range: 14 - 18<br />

Apparatus:<br />

A selection of swiss rolls; a knife; a cutting board.<br />

21 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

A level Study Day at Dudley Museum and<br />

Art Gallery and the Educator Placement<br />

Programme; museum/school links in Dudley<br />

Obviously such a valuable resource has a part to<br />

play in <strong>Earth</strong> <strong>Science</strong> Education in the locality,<br />

and this is mainly done by ‘Outreach’. Take the<br />

specimens into the schools for the students to see,<br />

preferably with a ‘geologist’ who can interest and<br />

inspire. Local Primary schools were already inviting the<br />

Keeper of Geology, Graham Worton to give short interactive<br />

sessions on fossils, rocks and soils covering both<br />

<strong>Science</strong> and Geography elements of the curriculum.<br />

This hopefully will develop into a formal programme.<br />

But soon the question was<br />

asked – what about A level students<br />

Whereas in the primary<br />

sector we found that we were<br />

working with dynamic and<br />

enthusiastic teachers who<br />

wanted information about <strong>Earth</strong><br />

science, at A level the equally<br />

dynamic and enthusiastic teachers<br />

were also specialist <strong>Earth</strong> scientists.<br />

Their needs were rather<br />

different. So we tried to set up a<br />

small network where information and expertise could<br />

be exchanged. After an initial teacher placement day we<br />

started to organise some events in the Museum. Our<br />

aim was to raise the profile of geology with young people<br />

in the local area, and we proposed to do this by<br />

engaging with the students themselves, as well as their<br />

teachers.<br />

A level study day<br />

In February we held a Study Day / Conference for year<br />

12 students, focussing on an applied geology theme. As<br />

the centres who showed an interest were all working for<br />

the WJEC GCE AS geology examination, it became a<br />

day focussed on the unit GL3, Geology and the Human<br />

Environment.<br />

Over eighty students with their teachers attended.<br />

The day kicked off with Pete Loader, the Chief Examiner<br />

for this examination, giving tips on examination<br />

KATE FIGGITT AND BILL GROVES<br />

Dudley Museum and Art Gallery in the Black Country is a hidden gem of geology. It has a<br />

collection of around 20,000 rocks, minerals and fossils, but heavily biased towards<br />

palaeontology. Positioned in the centre of Dudley, within a mile of the world famous Wren’s Nest<br />

Nature Reserve, and also on the South Staffordshire Coalfield, it has one of the finest collections<br />

of Much Wenlock Limestone fossils from the Silurian, together with a superb collection of Coal<br />

Measure plants. There are two small geological galleries, stuffed full of specimens in addition to<br />

larger <strong>teaching</strong> spaces.<br />

Our aim was to raise the<br />

profile of geology with young<br />

people in the local area, and we<br />

proposed to do this by engaging<br />

with the students themselves, as<br />

well as their teachers.<br />

technique. Pete was the only A level geology teacher<br />

who took part in the day; we wanted the students and<br />

teachers to hear from practising professionals, in a mixture<br />

of presentations and interactive sessions.<br />

Potential case study material was abundant; a chartered<br />

geologist described a complex waste disposal project<br />

in the Black Country, a hydrogeologist from the<br />

Environment Agency described the problems involved<br />

in water supply and pollution and an engineering geologist<br />

dealt with rock failure and tunnelling based on<br />

work in the caves and canal tunnels<br />

of Dudley. These professionals also<br />

brought with them equipment such<br />

as rock bolts, water pumps and<br />

drilling bits and cores.<br />

We had close cooperation with the<br />

<strong>Earth</strong> <strong>Science</strong>s Department at the<br />

University of Birmingham, and in<br />

the middle of the day, Andy Chambers,<br />

the Admissions Tutor spoke<br />

about Geology degrees generally,<br />

and there were representatives from<br />

the departments at Leeds and Manchester to answer<br />

individual questions. The day ended with a highly<br />

interactive problem-solving exercise based on British<br />

<strong>Earth</strong>quakes (Figure 1).<br />

The most encouraging part of the day was to see the<br />

interaction at the lunch break, between the wide variety<br />

of professionals, academics, A level teachers, and of<br />

course students from a number of different centres.<br />

This was the first time that Dudley Museum has tried<br />

to use its geological expertise to support A level <strong>teaching</strong>,<br />

but we suspect that it will not be the last.<br />

Educator Placement Programme; museum/school<br />

links<br />

The West Midlands regional council for museums,<br />

libraries and archives (MLA) as part of their ‘Cultural<br />

Entitlement Programme’ have an exciting scheme<br />

called the Educator Placement Programme. In this<br />

www.esta-uk.org<br />

22


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Figure 1 (left)<br />

AS geology<br />

students work<br />

with earthquake<br />

data as part of the<br />

Study Day<br />

Figure 2 (right)<br />

Year 13 students<br />

work with fossils<br />

from the Museum<br />

as part of the<br />

Educator<br />

placement day<br />

Museum/Archive professionals are required to spend 5<br />

days with a school in which time they shadow a teacher,<br />

consult with the children to explore their wants and<br />

develop two lessons relevant to their learning and the<br />

museum or archive collection. The aim is to get<br />

museum educators into schools and to get school children<br />

into museums.<br />

This is normally the territory of infants and primary<br />

schools but at Dudley Museum and Art Gallery it was<br />

thought, why not A level students We had a fine fossil<br />

collection and a local sixth form college, King Edward<br />

VI College, Stourbridge, keen to set up links with the<br />

Museum. We attended the first meeting and met an<br />

enthusiastic group of museum professionals and teachers,<br />

from a wide range of centres, not just traditional<br />

museums; Worcestershire Record Office; RAF<br />

Museum, Cosford and Acton Scott Historic Working<br />

Farm are just three of a varied bunch. We were the only<br />

Museum dealing with children older than 12.<br />

The initial consultation work with the students<br />

revealed one need, as one year 13 student said, “When<br />

are we going to get our hands on some of these wonder<br />

fossils” Palaeontology was to be a theme of the two<br />

lessons and the educator/teacher team devised two presentations.<br />

The first, for year 12 students, featured 30<br />

trilobites and an exercise in which students had to<br />

describe them using the morphological terms they had<br />

previously learnt in the classroom, and debate a possible<br />

mode of life.<br />

The second lesson for year 13 students involved<br />

looking at the Silurian Reef environment of the Much<br />

Wenlock Limestone. forty fossils of various types were<br />

looked at and the students had to decide where in that<br />

environment they were most likely to be found, talus<br />

slope, in the reef, back reef etc. (Figure 2). This was<br />

supported by a PowerPoint presentation of the<br />

museum’s fossils. They were finally introduced to the<br />

concept of palaeoecology and fossil communities.<br />

As every experienced teacher knows, even the most<br />

carefully laid plan is subject to change ‘on the hoof ’,<br />

and we were fortunate in having three AS and two A2<br />

sets to take part in these presentations. Honest student<br />

evaluation was also a must and helped to end up with an<br />

interesting and valuable couple of lessons.<br />

The Museum also supported the college when they<br />

made their annual visit to look at the reef environment<br />

at the Wren’s Nest National Nature Reserve, a facility<br />

they give to many schools and colleges.<br />

The aim of the student who wanted to get his hands<br />

on the ‘wonder fossils’ was fulfilled, but more significantly,<br />

links with the Museum are stronger and visits<br />

from Post-16 students, more common. This in turn<br />

satisfies the aim of the MLA in getting more young people<br />

into museums.<br />

If any geology teacher or school/college would like to<br />

be kept in touch with developments at Dudley<br />

Museum, please contact the authors.<br />

Kate Figgitt (Education Officer)<br />

Email: kate.figgitt@dudley.gov.uk<br />

Bill Groves (Geology Outreach Officer)<br />

Email: bill.groves@dudley,gov.uk<br />

Dudley Museum and Art Gallery<br />

St. James’s Road<br />

Dudley<br />

West Midlands<br />

DY1 1HU<br />

23 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

More Recent Geological Howlers<br />

JO CONWAY<br />

Below are a few of the writings that have made the exam marking team giggle over the last couple of exam<br />

seasons. Once again, my thanks go to fellow examiners for forwarding them on to me and also to the students!<br />

Fossil faux pas:<br />

● In labelling a dinosaur vertebrae the<br />

following were seen:<br />

● invertebrate<br />

● coxix<br />

● pygidium tail.<br />

● Use a type of foraminifera called:<br />

pachydermanegloboquadrina.<br />

● Trilobites are only found off the coast<br />

of Morrocco.<br />

● What were Stegosaurus plates used for<br />

● were used like solar panels turning<br />

heat from the sun into energy<br />

● to prevent other dinosaurs from<br />

jumping onto the creatures backs<br />

● to make them look nasty and find a<br />

mate<br />

● to find a mate for visual and noise<br />

● to shade it from the sun<br />

● to act as wind supports and stops the<br />

Steg from being moved by a strong<br />

wind.<br />

● Whilst the tail horns were used for hitting<br />

against a tree to enable the Steg to<br />

collect fallen leaves.<br />

● Fossils such as wildcats indicate Tertiary<br />

climates.<br />

Deformation:<br />

● Fault Y is a reverse fault due to the<br />

downthrown side being forced up.<br />

● This is a normal reverse fault and the<br />

ground has been thrust 25m – well that<br />

covers many of the fault types so one of<br />

them must be right!<br />

● The downthrow points to the upthrow.<br />

● The fold symmetry was described as:<br />

● Equilateral<br />

● Yes<br />

● Good.<br />

● <strong>Earth</strong>quakes sometimes cause buildings<br />

to liquifact.<br />

● <strong>Earth</strong>quakes can be stopped by bombing<br />

the faults.<br />

Rock wrongs:<br />

● Basaltic magma is more explosive and<br />

dangerous than granitic magma.<br />

● Volcanic BALLS are a significant geological<br />

hazard.<br />

● Andalusitic lava.<br />

● Volcanic deposits such as alluvium and<br />

peat are present.<br />

● In trying to explain how flood basalts<br />

could cause a mass extinction:<br />

● It is possible that the magma floods<br />

occurred on the continents because<br />

the creatures (that became fossils)<br />

didn’t have legs-they couldn’t run<br />

away and were killed<br />

● because they were so unexpected<br />

they would be unpredictable and<br />

there would be nothing the species<br />

could do about it because they are in<br />

the middle of tectonic plates<br />

● Flood basalts destroy bedding<br />

planes, beds which contain the fossil<br />

record, the beds become metamorphosed,<br />

recrystallisation occurs and<br />

an entirely new rock can be formed,<br />

therefore loss of the fossil.<br />

● the dinosaurs would have seen it<br />

coming.<br />

● The BLL limestone subducts under the<br />

shales.<br />

● Because hornfels contains a lot of schist<br />

and is quite fine grained so it must be<br />

near the marble.<br />

● It is more likely the schist metamorphosed<br />

the marble.<br />

● It’s too hot for partial melting to take<br />

place.<br />

● The Apron REEF is in the middle of<br />

the limestone, suggesting it is an intrusion.<br />

● The outcrop of SG on the hill is just<br />

like the cherry on the cake.<br />

● The rocks are near horizontal because<br />

it’s got trees on it.<br />

● How does peat change to anthracite –<br />

it changes from a liquid to a solid.<br />

Miscellaneous:<br />

● For stabilisation of a landslide on Mam<br />

Tor, one candidate suggested “spraycrete<br />

the face of Mam Tor” whilst<br />

another “build a large granite wall to<br />

prevent it slipping into water which<br />

could potentially cause a tidal wave”.<br />

● Other candidates would use: Graben<br />

baskets or large wire MESS netting.<br />

● Whilst others would monitor the landslide<br />

with a “Seismometer which doesn’t<br />

only record earthquakes but all<br />

seismic activity”.<br />

● Geologists wouldn’t be able to get<br />

access to the mineral veins because<br />

there’s a farm on top of the veins.<br />

● The major plate tectonic event to<br />

which the subsidence of the North Sea<br />

Basin is related is the creation of the<br />

Andes.<br />

● Why would geologists study the tide<br />

before excavating They will have to<br />

predict when it is best to excavate so<br />

parts of the tunnel are not above water<br />

(e.g. between low tide and high tide).<br />

● Circular drainage patterns.<br />

● For example, the Peak District, this<br />

area, to the north of Manchester has<br />

some of the most incredible rock formations<br />

ever seen.<br />

● Before open cast mining you must clear<br />

the rock of foliation.<br />

● Milancovich invented the 40,000 year<br />

tilt.<br />

● Unconformities can also form aqueducts.<br />

Spellings!:<br />

● Heryican orogeny<br />

● Laminated crass bedding<br />

● Open caste mining<br />

● River capture mistakenly called pirate<br />

capture!<br />

● A notable landform formed in<br />

periglacial areas is a nun-attack.<br />

● Euniformitarianism (uniformitarianism<br />

in Europe)<br />

● Wolly mammoth<br />

Jo Conway<br />

jlc@yale-wrexham.ac.uk<br />

www.esta-uk.org<br />

24


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Take a Nappe<br />

JACK TREAGUS<br />

The geological term nappe comes from the French word for a tablecloth and has come to refer to<br />

a large-scale sheet of rock pushed over another; in Britain, it often refers to a recumbent fold,<br />

with or without a thrust at its base.<br />

Three geologists in Britain were responsible here<br />

for the discovery and description of nappes –<br />

major recumbent (flat-lying) folds, with nearparallel<br />

limbs. The first was Charles Clough (1852-<br />

1916), a Yorkshireman, who joined the Geological<br />

Survey of Scotland in 1875 after rejecting the priesthood.<br />

He was the first to identify such a nappe in<br />

Britain, in the metamorphic rocks of the Dalradian of<br />

the SW Highlands of Scotland. Clough died, tragically,<br />

when he was hit by a railway wagon while working in a<br />

narrow cutting in the Scottish coalfield area. The second<br />

was Edward Greenly (1852-1949) who, on his<br />

marriage to a well-off lady, left the Geological Survey of<br />

Scotland, where he was a colleague of Clough, to single-handedly<br />

map the Isle of Anglesey; part of his<br />

superb mapping led him to propose major nappe structures.<br />

His map was of such quality that it and an accompanying<br />

Memoir were published by the Geological<br />

Survey. The third was Robert Shackleton (1909-<br />

2001), who led largely an academic life, partly at the<br />

University of Liverpool (1947-1963) and later at the<br />

Open University. Although he demolished Greenly’s<br />

nappe hypothesis in Anglesey, he was a great admirer of<br />

the latter’s work; from his meticulous detailed mapping,<br />

he developed the work of Clough into our present<br />

understanding of the nappe structure of the Dalradian<br />

of the Central Highlands of Scotland.<br />

Clough’s work in the Dalradian<br />

Clough’s first major assignment at the Scottish Geological<br />

Survey in 1884 was to the Cowal area to the west of<br />

Loch Lomond, between Lochs Long and Fyne (Figure<br />

1), an area of gentle topography, poorly exposed except<br />

on the loch shores. This work was published as the<br />

Memoir to the Cowal district (Clough in Gunn et al<br />

1897). Nothing of the stratigraphy or structure was<br />

known of these rocks, that are mostly schists (muds and<br />

silts, now muscovite-chlorite-biotite schists) and<br />

greywackes (pebbly feldspathic sandstones), with minor<br />

limestone and volcanics, all of low metamorphic grade.<br />

The structure of this complex area is shown in very simplified<br />

form in Figure 2a, as section W-X of Figure 1.<br />

Clough showed that the rocks were arched over a fold,<br />

that had an upright axial plane, trended towards the ENE<br />

and was some 30kms across within this area; he called<br />

this the Cowal Anticline (now called an Antiform, as it is<br />

not a first generation fold). He stated that this was a comparative<br />

late structure, as it had folded cleavage planes<br />

related to sets of minor folds of an earlier age than those<br />

related to the major antiform. He saw that these early<br />

minor folds consistently overfold towards the NW and<br />

he deduced they must be on a limb of a major early fold<br />

that, when the effect of the later antiform was removed,<br />

would have been originally recumbent (Figure 2b or c).<br />

It is important to emphasise that Clough honestly<br />

said that he did not know whether this early major fold<br />

was, before its refolding, an anticline or a syncline, since<br />

he did not know whether the rocks of this limb were<br />

upside down, which they would be if the fold were an<br />

anticline, as illustrated in Figure 2b, or ‘right-way-up’,<br />

if it were a syncline, as illustrated in Figure 2c. Sedimentary<br />

structures, such as cross-bedding and graded<br />

bedding, that would indicate the ‘way-up’ of the limb<br />

were not recognised in metamorphic rocks at that time,<br />

but on balance Clough favoured the original recumbent<br />

fold being an anticline (Figure 2b), with its hinge<br />

closing towards the SE. The age of the Dalradian rocks<br />

(as they came to be known) was unknown.<br />

About this time, geologists in the Alps, with the benefit<br />

of exposures on mountain-sides hundreds of<br />

metres high, were discovering similar such major<br />

recumbent folds that they called nappes, often similarly<br />

refolded. There is no evidence that Clough was<br />

aware of such work. Subsequent to his work at Cowal,<br />

Clough was a key figure in the elucidation of the nappe<br />

Figure 1<br />

The Dalradian of<br />

the Central<br />

Highlands north of<br />

the Highland<br />

Boundary Fault.<br />

Clough’s Cowal<br />

area around Lochs<br />

Fyne and Long is<br />

outlined to its NE<br />

by dots; W-X is the<br />

line of crosssection<br />

of Figure<br />

2a and Y-Z the<br />

cross-section of<br />

Figure 5.<br />

25 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Figure 2<br />

a. One formation<br />

boundary is shown<br />

to simply<br />

illustrate Clough’s<br />

view of the late<br />

Cowal Antiform,<br />

folding earlier<br />

minor folds. b. and<br />

c. The early major<br />

fold is shown as<br />

the two<br />

alternatives, an<br />

anticline closing<br />

to the SE or a<br />

syncline opening<br />

to the NW; the<br />

effect of the late<br />

antiform is<br />

removed. The tail<br />

of the Y symbols<br />

points towards the<br />

younger rocks.<br />

Figure 3<br />

Map of Holy<br />

Island, off the<br />

west coast of<br />

Anglesey. Shaded<br />

ornament is<br />

schist, white is<br />

greywacke and<br />

dotted is<br />

quartzite;<br />

R indicates<br />

Rhoscolyn area,<br />

see Figure 4.<br />

Figure 4<br />

Diagrammatic<br />

cross-section of<br />

the Rhoscolyn<br />

Anticline. A line is<br />

shown parallel to<br />

the axial-plane of<br />

the fold and to the<br />

cleavage in the<br />

greywackes. The<br />

dotted closure<br />

beneath sea-level<br />

is the nose of<br />

Greenly’s<br />

proposed nappe<br />

structure.<br />

and thrust structures that were to revolutionise the<br />

understanding of the Moine Thrust and the NW Highlands.<br />

There is not space here to expand on Clough’s<br />

genius, but remarkably there are books on the geology<br />

of the Scottish Highlands, and indeed on the principles<br />

of structural and metamorphic relationships, that make<br />

no mention of his fundamental contributions. Apart<br />

from being the originator of the idea of refolded recumbent<br />

nappes, he recognised that metamorphism was a<br />

product of temperature and depth of burial, and not<br />

only separated stages of metamorphism but dated them<br />

in relation to structural events. This is not to mention<br />

his enormous contribution to the geology of the NW<br />

Highlands, Mull, Skye and Glencoe.<br />

Greenly’s work on Anglesey<br />

In 1907 Greenly was working on the metamorphic<br />

rocks of Anglesey (Figure 3), particularly on Holy<br />

Island, south of Holyhead, when he was visited by his<br />

friend, Clough. He writes (Greenly, 1938 p290) that he<br />

showed Clough the magnificent cliff-section at<br />

Rhoscolyn, where two beds of greywacke sandwich a<br />

bed of quartzite (Figure 4), all folded around an anticline.<br />

But he confessed that he was unable to understand<br />

the structure. Clough suggested that that they<br />

might be looking at a fold that had been originally flatlying<br />

and recumbent (i.e. a nappe) such as the Scottish<br />

Survey were now finding in the Highlands, that had<br />

been subsequently refolded. Greenly leapt at the idea<br />

and in the Memoir related to his superb map of Anglesey,<br />

Greenly (1919, 1920) proposed that the structure of<br />

the lower part of the complex succession in these Precambrian<br />

rocks, was a pile of such nappes, trending<br />

NE-SW. In particular, at Rhoscolyn he connected the<br />

two greywackes beneath the sea to form an early nappe<br />

nose that had been affected by a late major fold, the<br />

Rhoscolyn Anticline; this late fold was associated with<br />

smaller-scale minor folding, as shown in Figure 4.<br />

However, it should be said that although Greenly was,<br />

like Clough, ahead of his time in recognising sequences<br />

of minor fold episodes on Anglesey, he did not produce<br />

evidence that any one particular set was related to his<br />

early nappes and another to their refolding.<br />

Greenly, like Clough, was unable to positively decide<br />

whether his nappe at Rhoscolyn, that would have been<br />

recumbent before refolding, was an anticline or syncline,<br />

in the absence of knowledge of ‘way-up’ of the<br />

sequence. However, since he considered that rock fragments<br />

in the greywackes were probably derived from<br />

older rocks in the succession he proposed that the<br />

nappe was a syncline opening to the NW, the quartzite<br />

thus being the youngest rock in the sequence.<br />

Shackleton’s re-interpretations<br />

This brings us to the work in the 1950s of the third of<br />

our geologists, Robert Shackleton. In the mid-1950s, he<br />

became interested in nappe structures and re-investigated<br />

the area of Greenly’s nappe at Rhoscolyn in<br />

Anglesey. He showed (Shackleton, 1969), from sedimentary<br />

structures, graded bedding and cross-lamination,<br />

that the two greywackes on either side of the<br />

central quartzite, were not the same formation repeated<br />

by a nappe, but represented a continuous upward succession<br />

of greywacke-quartzite-greywacke (Figure 4).<br />

This sequence had been simply folded by the<br />

Rhoscolyn Anticline, with only minor modification by<br />

later structures. He also produced sedimentary and<br />

structural evidence that disproved Greenly’s other proposed<br />

nappes on Holy Island. Although there has been<br />

no dispute about the continuous upward succession at<br />

Rhoscolyn, there have been other interpretations concerning<br />

the relative age of the anticline, some revising<br />

www.esta-uk.org<br />

26


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

the concept that the rocks lie on the limb of a nappe.<br />

This author and colleagues (Treagus et al 2003) have<br />

maintained that, with modification, Shackleton’s structural<br />

interpretation was correct.<br />

Shackleton also turned his attention to the Dalradian<br />

in the 1950s. The overall flat limb of the recumbent fold<br />

that Clough had identified in the SW of the Central<br />

Highlands of Scotland, had by then been recognised to<br />

extend another 15kms to the NW, as far as Ben Lui and<br />

across to Glen Lyon, between Loch Tay and Schiehallion<br />

(see Figure 1). Sedimentary structures had been identified,<br />

showing that the rocks on this flat limb were essentially<br />

up-side-down. Thus, together with Clough’s<br />

evidence, the nappe was certainly an anticline, with its<br />

nose closing somewhere towards the SE (Figure 2b).<br />

Shackleton (1958), as a result of using sedimentary structures<br />

and detailed structural mapping along the SE margin<br />

of the Dalradian (Figure 1), was able to identify the<br />

position of the anticlinal nose of the nappe (now named<br />

the Tay Nappe) in a zone just to the NW of the Highland<br />

Boundary Fault (Figure 5). He showed that the nose of<br />

the anticline had been bent down by a late fold, and thus<br />

has the shape of a synform; he coined the now universally-employed<br />

term downward-facing for such an early<br />

fold that had later been inverted. Shackleton used the<br />

relations between the bedding (having determined its<br />

‘way-up’) and the first cleavage (and the overfolding of<br />

the minor folds, as Clough had done) to make this<br />

deduction (Figure 6). Essentially, the late fold is the continuation<br />

of the SE limb of the Cowal Antiform.<br />

The inverted limb of the Tay Nappe has now been<br />

recognised to extend even further northwards, as far as<br />

the southern edge of the Etive and Cruachan Granite<br />

body, and to the north of Schiehallion; laterally it dominates<br />

the structure of the Central Highlands (Figures 1<br />

and 5). It is important to emphasise that the 60km NW-<br />

SE extent of the Tay Nappe is now seen as a result of the<br />

development of the structure by two distinct early<br />

deformation episodes, as anticipated by Clough.<br />

Amongst others’ work, papers by this author (Treagus,<br />

1987; 1999) have proposed that the nappe was initially a<br />

relatively small anticline leaning towards the SE, that<br />

has subsequently become stretched out in that direction<br />

by a strong second episode of deformation (Figure 7).<br />

Postscript<br />

I hope you haven’t confused the above with the English<br />

word nap – something woolly or sleep-inducing!<br />

Although the rocks at Cowal are probably inaccessible<br />

to most readers, those at Rhoscolyn are well-worth a<br />

visit. The anticline is easily demonstrated on reasonably<br />

safe, accessible cliffs and the sedimentary structures are<br />

not difficult to find. Details can be found in Treagus et<br />

al (2003), but the author (e-mail address below) would<br />

be pleased to supply a photocopied map showing key<br />

localities for minor folds and sedimentary structures. A<br />

24-page pamphlet describing localities in the area, with<br />

superb colour photographs, is published by the Countryside<br />

Council of Wales and costs £5; it can be obtained<br />

from Dr.M.Wood, by phoning her at 01248 810287 or<br />

e-mailing margaret@coleg10freeserve.co.uk.<br />

This article is essentially the content of a talk given<br />

to the Manchester Geological <strong>Association</strong> at their<br />

annual dinner in 2005; it has also been published in the<br />

North West Geologist (number 12, 2005) and is reproduced<br />

here with permission of its editors.<br />

Jack Treagus<br />

School of <strong>Earth</strong>, Atmospheric and Environmental <strong>Science</strong>,<br />

University of Manchester, M13 9PL.<br />

Email: jack.treagus@btinternet.com<br />

References<br />

Figure 7<br />

Figure 5<br />

Cross-section Y-Z<br />

of Figure 1. The<br />

two folded lines<br />

represent<br />

formations that<br />

schematically<br />

illustrate the<br />

geometry of the<br />

Tay Nappe and of<br />

its nose, the<br />

downward-facing<br />

Aberfoyle<br />

Anticline.<br />

Figure 6<br />

Detailed view of<br />

closure of<br />

Aberfoyle<br />

Anticline of Figure<br />

5; early minor<br />

folds and axialplanar<br />

cleavage<br />

(double lines) are<br />

shown<br />

diagrammatically.<br />

Figure 7<br />

Above: a simplified<br />

sketch of the<br />

earliest<br />

development of<br />

the Tay Nappe as<br />

an asymmetric<br />

anticline leaning<br />

to the SE.<br />

Below: the<br />

subsequent<br />

stretching of that<br />

fold to the SE.<br />

Gunn, W. Clough C.T., Hill J.B. (1897). The Geology of Cowal. Memoir of<br />

the Geological Survey, Scotland, Sheet 29.<br />

Greenly, E. (1919). The Geology of Anglesey. Memoir of the Geological Survey<br />

of Great Britain. 2 volumes, London.<br />

Greenly, E. (1920). 1:50,000 and 1 inch to 1 mile Geological Map of Anglesey.<br />

Geological Survey of Great Britain, Special Sheet No. 92 and 93 with<br />

parts of Sheets 94,105 and 106.<br />

Greenly, E. (1938). A Hand through Time. (London: Murby).<br />

Shackleton R.M. (1958). Downward-facing structures of the Highland<br />

Border. Journal of the Geological Society London 113, 361-92.<br />

Shackleton R.M. (1975). Precambrian rocks of North Wales. In Wood, A, (ed)<br />

The Pre-Cambrian and Lower Palaeozoic rocks of Wales. University of Wales Press,<br />

Cardiff, 1-22.<br />

Treagus J.E. (1987). The structural evolution of the Dalradian of the Central<br />

Highlands. Transactions of the Royal Society of Edinburgh 78, 1-15.<br />

Treagus J.E. (1999). A structural reinterpretation of the Tummel Belt and a<br />

transpressional model for evolution of the Tay Nappe in the Central Highlands<br />

of Scotland. Geological Magazine 100, 643-660.<br />

Treagus S.H., Treagus J.E. & Droop G.T.R. (2003). Superposed deformations<br />

and their hybrid effects: the Rhoscolyn Anticline unravelled. Journal of<br />

the Geological Society London 160, 117-136.<br />

27 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Tales from Iceland<br />

DAWN WINDLEY<br />

After many years of “just thinking about it” I finally got away to Iceland over the Easter break last<br />

year – and what a fantastic geological place to visit! Four days was long enough though, as you<br />

can rapidly run out of money there. You need a small bank loan to enjoy a meal out – wine/beer<br />

is around £7.50 a glass and a plate of fish and chips can set you back £18.00!<br />

But the scenery is fantastic – we flew with Icelandair<br />

over the craggy, desolate basaltic shore<br />

line and landed almost in the middle of the<br />

Reykjanes Peninsular – home to the Mid Atlantic Rift -<br />

where there is actually a bridge crossing from one continent<br />

to the other !!<br />

Travelling with the company Discover the World<br />

(who also do fabulous trips to Ice Hotels) – we hired a car<br />

and drove along the main road in the southern part of the<br />

island – visiting such places as Pingvellir - the site of the<br />

ancient Icelandic Parliament (The Althing) and the 2km<br />

long Almannagja rift wall, part of the Mid Atlantic Rift<br />

System. In the visitors centre at the rift wall there was a<br />

really good audio/visual interactive display showing the<br />

formation of the landscape (numerous lava flows) in the<br />

area. We visited Geysir – home of the now extinct Gesyir<br />

and very active Strokkur geyser which produces<br />

impressive 30m high eruptions every 10 minutes like<br />

clockwork! We also visited the awesome Gulfoss waterfalls<br />

cascading down over huge lava flows.<br />

Towards the east on the southern ring road are some<br />

amazing columnar basalts (apparently home to the<br />

many elves that live in Iceland) and the small town of<br />

Kirkjubaejarklaustur flanked by immense lava fields.<br />

The most famous of these lava flows was stopped by the<br />

historical ‘Fire Sermon’. It is reported that in June 1783,<br />

the earth split into twenty, five-kilometre long fissures<br />

and, over the next seven months poured out a continuous<br />

thick blanket of poisonous ash and smoke, and<br />

enough lava to cover 600 square kilometres. The ash<br />

clouds were so thick they reached Europe where they<br />

caused poor harvests. In Iceland, there were no harvests<br />

at all and livestock dropped dead, poisoned by eating<br />

fluorine-tainted grass. As the lava flows from the Lakagigar<br />

(the Laki craters) eruptions encircled the town of<br />

Kirkjubaejarklaustur the pastor Jon Steingrimsson,<br />

delivered his sermon and the lava miraculously halted.<br />

Unfortunately, the damage was done and over the next<br />

three years Iceland’s population plummeted by a quarter<br />

– through starvation, earthquakes and outbreaks of<br />

smallpox – to just 38,000 people. The Danish government<br />

at the time even considered evacuating the entire<br />

population to Jutland. More recently some of the<br />

human remains have been excavated and examined.<br />

Many show curious growths/nodules on the bones that<br />

are due to fluorine build up. An excellent case study for<br />

WJEC GL3 Geology and the Human Environment!<br />

Amazing glaciers were seen at Skaftafell National<br />

Park another 2 hours drive along the southern ring road,<br />

a carriageway with many bridges crossing the meltwaters<br />

on the glacial outwash plains. The road itself was<br />

only finished in 1984 completing the circular route<br />

around the island and was unfortunately washed away in<br />

1996, after an eruption beneath the Vatnajokull ice-cap.<br />

The eruption started in September 1996 north of<br />

Grimsvotn and produced meltwaters on the 5th<br />

November 1996 much bigger in volume than ever<br />

expected – 50,000 cubic meters of water per second<br />

rushed down the valleys carrying collosal amounts of<br />

debris, silt, gravels and boulders. Huge icebergs were also<br />

transported and it completely destroyed the area, sweeping<br />

away the entire road and a whole series of bridges that<br />

lay in its path. The iron girders and concrete bases to the<br />

bridges can be seen carelessly scattered across the landscape<br />

where the meltwaters deposited them. Another<br />

excellent case study for WJEC GL3!<br />

From our hotel near Seljalandfoss we could almost<br />

see Heimay and the Westman Islands (Vestmannaeyjar)<br />

through the mist. We didn’t visit (the boat<br />

runs once a day and takes two and a half hours), but<br />

later found out that a plane flight across only takes 6<br />

minutes (around £39 single) – so well worth it if you get<br />

the chance. According to the guide book, minature<br />

houses now mark the locations of the original houses<br />

lost in the famous 1973 Kirkjubaejarhraun eruption<br />

(GL3 Case study three).<br />

A trip to Iceland wouldn’t be complete without the<br />

visit to the famous Blue Lagoon – Iceland’s most<br />

trumpeted bathing spot. Thick fog swirls over the<br />

warm milky-blue waters surrounded by lava flows,<br />

making this a great hot-pot experience. The lake is actually<br />

artificial, set in the middle of a flat expanse of black<br />

lava blocks and filled by the outflow from the nearby<br />

Svartsengi Thermal Power Station which taps into<br />

the steam vents fed by sea water seeping down into the<br />

subterranean hot pots. By the time the water emerges it<br />

is at a comfortable 38 degrees – very pleasant and the<br />

white silty mud has healing properties too. For a picture<br />

of Blue Lagoon, see www.delderfield.nl/travel/pages/<br />

Blue%20Lagoon%2C%20Iceland.htm<br />

Close by, at Seltun are some hot springs and mud<br />

pools – the site of a moderately impressive geyser that<br />

exploded in 1999, leaving a large steaming grey and very<br />

smelly pond. The pale-green crater lake at Graenavtn<br />

is also well worth a look.<br />

Iceland is an amazing dynamic country, with spec- <br />

www.esta-uk.org<br />

28


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

The Life and Work of Alfred Wegener<br />

1880-1930<br />

CLARE DUDMAN<br />

In 1968 J Tuzo Wilson declared that the recent revolution in geology should be called the<br />

Wegenerian revolution in honour of its chief proponent, Alfred Wegener. Yet Alfred Wegener<br />

remains little known today by the general public in spite of having a surprisingly full life of<br />

geological and scientific discovery. His inclusion in the National Curriculum at GCSE might change<br />

this and a study of his life is useful to students in two respects: his role in the formulation of the<br />

hypothesis of Continental Drift and how new ideas are accepted in science. Since he also led the<br />

dramatic life of an adventurer and explorer he is a glamorous example of science in action.<br />

Figure 1<br />

Wegener<br />

Alfred Wegener was born in 1880 in Berlin. He<br />

was the youngest of five children, two of whom<br />

died before adulthood. At eighteen he entered<br />

the Friedrichs-Wilhelms university in Berlin to study<br />

science, graduating with highest honours. He then<br />

joined his older brother Kurt as an assistant at the<br />

Prussian Aeronautical Laboratory. The purpose of his<br />

work was to examine the nature of the atmosphere and<br />

this led to the brothers staying aloft for 52.5 hours in a<br />

hydrogen balloon which was a world record.<br />

As a result Alfred was asked to go on a Danish expedition<br />

to Greenland as meteorologist in 1906. The<br />

expedition lasted two years and Wegener helped map<br />

the north-east coast, took the first colour photographs<br />

on an expedition and various innovative photographs of<br />

arctic mirages and ice. Significant was his expedition to<br />

Sabine island, an island off the coast of East Greenland<br />

where he measured the longitude and found that it<br />

appeared to be rather more west than it had been about<br />

40 years previously.<br />

On his return to Germany he became a private lecturer<br />

in Marburg on astronomy, meteorology and cosmic<br />

physics. In 1908 he gave a lecture at Hamburg and met<br />

his future wife Else Köppen in the audience. He then<br />

wrote the thermodynamics of the atmosphere (published 1912)<br />

and in which he explained the now accepted theory of<br />

rain drop formation in temperate latitudes.<br />

At Christmas 1910 he noticed that the coastlines of<br />

Africa and South America interlocked, an idea which he<br />

at first he dismissed, but a few months later was forced<br />

to reconsider when he came across a compendium of<br />

fossils which listed the similarity of fossils of the carboniferous<br />

in South Africa and Brazil. Rejecting the<br />

established theory of the time of land bridges Alfred<br />

realised that a far better explanation was that the continents<br />

had once been joined and then had drifted apart.<br />

He was immediately convinced he was correct and a<br />

few months later presented his ideas to the newly<br />

formed Frankfurt geological society. There was an<br />

immediate outcry, but by this time Wegener was in<br />

Greenland again.<br />

In Wegener’s 1912-13 expedition to Greenland he<br />

became one of the first people to overwinter on the ice<br />

sheet and the first to cross it from east to west with<br />

ponies. After almost losing their lives several times they<br />

were rescued when almost starving to death.<br />

He returned to marry Else in 1913 and as soon as the<br />

Great War was declared immediately sent out to the<br />

Figure 2<br />

Wegener<br />

overwintering<br />

1912<br />

<br />

tacular scenery. The inhabitants make very good use of<br />

the geothermal resources – they even pipe the hot water<br />

under the pavements to prevent ice forming on them in<br />

the winter time. If you’re lucky and go at the right time<br />

of the year, you may see the Northern Lights. For us,<br />

there were magnetic storms – but it was far too cloudy<br />

to see the lights. At least this meant it wasn’t particularly<br />

cold (averaged around 6 degrees), about the same as the<br />

UK at the time.<br />

Iceland is great – a hard rock Geologist’s idea of<br />

heaven and a spectacular place to take students for some<br />

memorable <strong>teaching</strong> (ask Alison Quaterman at Greenhead<br />

College about this), although I’m not entirely sure<br />

what you would do for soft rock Geology and fossils.<br />

Dawn Windley<br />

Thomas Rotherham College<br />

29 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Figure 3<br />

Crossing ice<br />

sheet 1913<br />

Figure 5<br />

The Kamarujuk<br />

glacier where<br />

Wegener lost<br />

his life<br />

trenches in northern France. He was wounded twice,<br />

the last wound ensuring he was unfit for active service.<br />

He was also shell-shocked. He used his recuperation to<br />

revisit his idea of continental drift and wrote the first<br />

edition of the Origins of the Continents and Oceans. The<br />

rest of the war he spent as an itinerant meteorologist<br />

doing revolutionary work on meteorite impact craters<br />

on the earth and on the moon in his vacations. There<br />

are meteorite impact craters named after him on the<br />

moon and on Mars.<br />

Shortly after the end of the war he obtained his first<br />

permanent academic post by replacing his father-inlaw,<br />

Vladimir Köppen, as a professor of meteorology at<br />

Hamburg. During his time there he wrote two further<br />

editions of the Origins of the Continents and Oceans incorporating<br />

new evidence, and also, with Köppen, wrote<br />

the Climates of the Geological Past which showed how the<br />

map of the world looked in past geological ages. His<br />

books were translated and so his ideas came to the<br />

attention of a wider audience and caused more controversy<br />

and ridicule.<br />

In 1924 the family (he now had three daughters)<br />

moved to Graz and he became professor of meteorology<br />

and geophysics. Since he had now accumulated<br />

more evidence he wrote the fourth and last edition of<br />

the Origins of the Continents and Oceans and in 1926 his<br />

ideas were ridiculed in New York meeting of the American<br />

<strong>Association</strong> of Petroleum Geologists. After this,<br />

interest in the theory died down and his work disregarded.<br />

Further meteorological work was followed by<br />

two expeditions to Greenland (a preliminary one in<br />

1929 and the main one in 1930) to establish three scientific<br />

stations across the widest part of the ice sheet.<br />

The last expedition was beset by delays. At the end of<br />

September Wegener decided to lead a final sledge party<br />

to supply the central station. He arrived at the end of<br />

October in atrocious conditions. A couple of days later<br />

he set off back to the coast with an Inuit companion<br />

called Rasmus. It was the last time anyone ever saw<br />

them alive.<br />

The following summer Wegener’s body was found<br />

sewn into his caribou sleeping bag by his Inuit companion<br />

and buried in the ice. It was supposed that he<br />

had died of heart failure. His Inuit companion was<br />

never found.<br />

Following magnetic exploration of the oceanic floor,<br />

Wegener’s idea was revived in the 1950s and 1960s. But<br />

instead of the continents behaving like icebergs pushing<br />

through a sea of sima, as Wegener had proposed, it was<br />

now suggested that the <strong>Earth</strong>s’ crust consists of a small<br />

www.esta-uk.org<br />

30


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

the islands in the Baltic Sea, established the method for<br />

locating the site of a meteorite impact from witness<br />

observations which is used today and did important<br />

work on water spouts and typhoons,. He was the first<br />

person to take a type of colour photograph on expeditions,<br />

took the first photographs of Arctic mirages,<br />

developed theories on other visual effects including<br />

Arctic halos and sun dogs.<br />

His work and the philosophy of his work is carried<br />

on today at the Alfred Wegener Institute in Bremerhaven<br />

which is the German equivalent of the Scott<br />

Polar Research Institute at Cambridge.<br />

Clare Dudman<br />

Email: clare@claredudman.clara.co.uk<br />

Figure 4<br />

Else, Hilde and<br />

Alfred Wegener<br />

1916<br />

number of plates which constantly move against each<br />

other. In this way Wegener’s hypothesis of Continental<br />

Drift evolved into the theory of Plate Tectonics.<br />

Wegener’s work can be mimicked in the classroom<br />

using models. For instance:<br />

● Students could manipulate their own paper continental<br />

jigsaw to make the one large proto-continent<br />

Wegener called ‘Pangaea’.<br />

● Students could then go on to match the various ‘evidences’<br />

(as shown in Wegener’s ‘The origin of the<br />

Continents and Oceans’ (Dover Press) including:<br />

● Mountain chains that stop on one side of the<br />

ocean to continue on the other.<br />

● American coal seams matching coal seams of the<br />

same age found in Britain.<br />

● The fossils of the small dinosaur ‘Mesosaurus’<br />

and the plant ‘Glosopteris’ found in Africa and<br />

South America<br />

● Rocks of the same type and age on opposite coasts<br />

thousands of miles apart.<br />

● Identical worms and snails found each side of the<br />

Atlantic, while different ones are found elsewhere.<br />

More advanced students could consider why Wegener<br />

thought that the theory of isostacy meant that the concept<br />

of land bridges was unlikely; why the discovery of<br />

radioactivity had a role in Wegener’s rejection of the<br />

cooling earth theory and why the apparent uplift of the<br />

Scandinavian land mass also supported his theory.<br />

Wegener was a scientific revolutionary in many ways<br />

and had interests in many fields of science. He established<br />

that there was a meteorite impact crater on one of<br />

References<br />

Dudman, C., 2003 Wegener’s Jigsaw. Hodder and<br />

Stoughton. (also available from Amazon as One Day the<br />

Ice will Reveal All its Dead, Penguin 2004)<br />

Marvin, U. B., 1973 Continental Drift. The Evolution<br />

of a Concept. Smithsonian Institution Press. Washington.<br />

Miller, R. 1983 Continents in Collision. Time-Life<br />

Books. Alexandria. Virginia<br />

Oreskes, N., 1999 The Rejection of Continental Drift:<br />

Theory and Method in American <strong>Earth</strong> <strong>Science</strong>. Oxford<br />

University Press.<br />

Reinke-Kunze, C. 1994 Alfred Wegener. Polarforscher<br />

und Entdecker der Kontinentaldrft. Birkhäuser Verlag.<br />

Schwarzbach, M 1986. Alfred Wegener. The Father of<br />

Continental Drift. Transl. Love, Carla. Madison Wisconsin:<br />

<strong>Science</strong> Tech. XX .<br />

Wegener, A. 1911 Thermodynamik der Atmosphäre JA<br />

Barth Leipzig<br />

Wegener, A 1966 The Origins of Continents and<br />

Oceans. Tranls. from the fourth edition. New York:<br />

Dover Publications.<br />

Wegener, E. 1960 Alfred Wegener. Tagebuucher, Briefe,<br />

Erinnerungen etc. Wiesbaden.<br />

Wegener, E. 1933 Greenland Journey. The Story of<br />

Wegener’s German Expediton to Greenland in 1930-<br />

31. Blackie<br />

Wutzke, U. 1997 Durch die Weisse Wüste. Gotha Justus<br />

Perthes.<br />

Images used with permission of the Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany.<br />

31 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

News and Views<br />

Scibermonkey<br />

The Biochemical Society recently<br />

launched scibermonkey, a new free<br />

online resource for Key Stage 3 science.<br />

Mapped onto the QCA scheme of work<br />

for KS3, scibermonkey easily searches all<br />

units and lesson objectives, directly<br />

linking you to the best science resources<br />

on the web. Quick links and features<br />

include:<br />

● Pupils pages – years 7, 8 and 9<br />

● Teachers page, spreadsheets and print<br />

outs<br />

● Revision<br />

● Background reading<br />

● Fun<br />

● Lesson planning<br />

● Site maps<br />

● Add extra resources<br />

● Leave feedback<br />

● All resources vetted by professionals<br />

See www.scibermonkey.org,<br />

www.biochemistry.org and<br />

www.biochem4schools.org (an online<br />

biochemical resource for teachers and<br />

students). Please contact Hannah Baker,<br />

with any feedback and/or links. She<br />

would like to hear from individuals,<br />

scientific societies or other organisations.<br />

Hannah Baker<br />

Email: hannah.baker@biochemistry.org<br />

Tel: 020 7280 4152<br />

QPA Celebrates “Web Oscar” for Virtual Quarry<br />

Both ESTA and ESEU contributed<br />

significantly to the educational aspects of<br />

the Quarry Products <strong>Association</strong>’s flagship<br />

educational website, the Virtual Quarry<br />

(www.virtualquarry.co.uk). The site,<br />

which was only launched in January this<br />

year, picked up the “Most Imaginative<br />

Design” award in the 2006<br />

Communicators in Business Awards,<br />

beating off stiff competition from leading<br />

players such as BT and international law<br />

firm Allen & Overy.<br />

Following securing Aggregates Levy<br />

Sustainability Funding (ALSF) through<br />

MIST in autumn 2004, the QPA brought<br />

together a steering group from across the<br />

industry and education to try and raise<br />

Congratulations<br />

the profile of the quarrying industry<br />

through helping young people to make<br />

the link between their local quarry and<br />

the built environment. The resulting<br />

Virtual Quarry site features a fully<br />

interactive 3D tour of a hard rock quarry,<br />

with specially created animated<br />

characters to explain the processes<br />

involved in extracting rock from the<br />

ground, crushing and screening to<br />

produce aggregates and transporting the<br />

products to where they are needed. The<br />

virtual tour also includes background on<br />

the planning process, on archaeology and<br />

a look at how quarries are restored when<br />

extraction is finished.<br />

From QPA press release<br />

We were pleased to spot an entry entitled Outstanding pupils and teachers in the<br />

Geological Society Annual Report 2005. The Society awarded a copy of The Geology<br />

of Scotland to the highest scoring candidate in each exam board offering geology<br />

A-Level, and for OCR the winner was Orlando Browne from Radley College,<br />

Abingdon. His teacher, Dr Chris Bedford, also received a copy of the same volume.<br />

Chris is an ESTA activist and a regular supporter of the annual Conference where<br />

his contributions to the A-Level Bring and Share session are always well received. He<br />

clearly practises what he preaches!<br />

Chairman<br />

THEMATIC<br />

TRAILS<br />

There are now more than 100 guides<br />

published or marketed by the educational<br />

charity Thematic Trails. They are full of<br />

serious explanation, yet challenge the<br />

reader to question and interpret what they<br />

see in the field. Each guide is an<br />

information resource suitable for teachers<br />

to translate into field tasks appropriate to<br />

a wide range of ages.<br />

For a free catalogue, Email<br />

keene@thematic-trails.org or phone<br />

01865 820 522. Alternatively, visit the<br />

website www.thematic-trails.org and<br />

download an order form. Quote your ESTA<br />

membership number and you’ll qualify for<br />

a 15% educational discount.<br />

Email: keene@thematic-trails.org,<br />

phone 01865 820 522 or visit the<br />

website www.thematic-trails.org<br />

‘Cooked alive’ in<br />

shelter from<br />

volcano<br />

Two men were ‘cooked alive’ after<br />

taking shelter in a concrete bunker to<br />

escape the lava and heat of an<br />

erupting volcano in Central Java,<br />

Indonesia. The purpose-built bunker,<br />

with heavy steel doors and walls more<br />

than two feet thick with no apparent<br />

air leaks, was no protection from Mt<br />

Merapi, the most dangerous volcano<br />

in Indonesia. The villager and the<br />

volunteer, who was helping to move<br />

people away from the area, could not<br />

be rescued until the temperature of<br />

the ash and lava had cooled<br />

sufficiently. The debris had been so<br />

hot that it melted shovels and<br />

exploded truck tyres.<br />

From an article in the Daily Mail,<br />

17 June 2006<br />

www.esta-uk.org<br />

32


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Harcourt Education Backs National<br />

<strong>Science</strong> Learning Centre<br />

International educational publisher<br />

Harcourt is supporting the National<br />

<strong>Science</strong> Learning Centre in York with<br />

development funds for its Resource<br />

Centre and to provide educational<br />

bursaries for secondary science teachers.<br />

The National <strong>Science</strong> Learning<br />

Centre provides innovative and<br />

inspirational professional development<br />

for science teachers and technicians from<br />

across the UK.<br />

Harcourt, best known in UK schools<br />

and colleges for its Heinemann, Ginn<br />

and Rigby books and other educational<br />

resources, will support the Centre in<br />

York from spring 2006 until July 2007.<br />

Harcourt’s funding will also make<br />

bursaries available for the forthcoming<br />

Contemporary <strong>Science</strong> course: How<br />

<strong>Science</strong> Works, Controversial and<br />

Contemporary <strong>Science</strong>. This course ran<br />

from 12-14 June with its second part<br />

being completed in February 2007.<br />

The sponsorship from Harcourt will be<br />

used to fund places for secondary<br />

science teachers from across the<br />

country. Although it is too late for this<br />

course, they are planning another, so do<br />

get in touch.<br />

The National <strong>Science</strong> Learning<br />

Centre is part of a network of 10 <strong>Science</strong><br />

Learning Centres, which is a joint<br />

initiative by the Department for<br />

Education and Skills and the Wellcome<br />

Trust. The leading aim of the National<br />

<strong>Science</strong> Learning Centre is to upgrade<br />

the quality of professional development<br />

on offer to science teachers, technicians<br />

and support staff. Teachers and<br />

technicians are able to explore the<br />

advanced resources on offer at the<br />

National <strong>Science</strong> Learning Centre<br />

through residential courses, informal<br />

visits or online. The Centre’s Resource<br />

Centre is open to all teachers who visit<br />

on courses and is also available to anyone<br />

in the world of education who wishes to<br />

make a special visit. It is the intention of<br />

the National <strong>Science</strong> Learning Centre<br />

that its Resource Centre will eventually<br />

house the definitive collection of <strong>Science</strong><br />

<strong>teaching</strong> and learning resources.<br />

Anyone involved in education who<br />

wishes to visit it only has to call the<br />

Centre in advance to let them know they<br />

are coming.<br />

For further information visit<br />

www.sciencelearningcentres.org.uk or<br />

contact Anna Gawthorp<br />

Communications & Business Director<br />

National <strong>Science</strong> Learning Centre<br />

University of York, York YO10 5DD,<br />

tel 01904 328303.<br />

Anna Gawthorp<br />

Email: a.gawthorp@slcs.ac.uk<br />

Wales’ Resource<br />

Centre for Women<br />

in SET<br />

Wales’ Resource Centre for<br />

Women in SET was launched in<br />

South Wales in November 2005 and<br />

in North Wales in February 2006. It is<br />

part of the JIVE Wales project and is<br />

based at The Women’s Workshop,<br />

Cardiff. There will also be space<br />

available at Coleg Menai, Bangor to<br />

hold meetings, seminars, store<br />

literature, etc.<br />

As well as being where the JIVE<br />

team are based, the actual Resource<br />

Centre will also offer:<br />

● Information and advice on current<br />

positive action and funding<br />

opportunities for Women wishing<br />

to follow a SET career.<br />

● Advisory services and best practice<br />

solutions to employers and women.<br />

● A mapping of the current gender<br />

SET specific initiatives operating in<br />

Wales.<br />

● A mapping of SET training<br />

provision for women in Wales<br />

● A database of Welsh women experts<br />

in SET, to act as role models,<br />

mentors, media contact, etc.<br />

The Centre will explore the barriers<br />

preventing women from progressing<br />

in SECT from school through to<br />

employment in industry. Recruitment,<br />

retention and progression initiatives<br />

will also be promoted.<br />

To make an appointment to visit<br />

Wales’ Resource Centre for Women in<br />

SET, please contact:<br />

Bex Gingell<br />

Research & Information Officer<br />

The Women’s Workshop<br />

Clarence House, Clarence Road<br />

Cardiff CF10 5FB<br />

bex.gingell@womensworkshop.org.uk<br />

Tel:029 2049 3351<br />

33 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

News and Views<br />

Geological conservation<br />

English Nature has published a guide to<br />

good practice for geological<br />

conservation. It covers aspects such as:<br />

Why conserve geology including<br />

definitions of geology and<br />

geomorphology) why geology is<br />

important and the benefits of geological<br />

conservation Geological site<br />

conservation; Management guidance by<br />

site type, including active quarries and<br />

The outdoor classroom<br />

pits, disused quarries, coastal cliffs and<br />

foreshore, rivers and streams,<br />

underground mines and tunnels, road,<br />

rails and canal cuttings, mine dumps etc;<br />

numerous case studies including Wren’s<br />

Nest and Dryhill, Clee Hill,<br />

Hengistbury Head, Mam Tor, Birling<br />

Gap, Blakeney Esker, Hope’s Nose<br />

accompanied by superb photographs.<br />

See www.english-nature.org.uk<br />

As <strong>Earth</strong> scientists we are aware how important it is to get pupils outside the<br />

classroom in order to enhance their learning and also to show them the ‘real thing’<br />

and let them experience the outdoors first hand. How what happens in the ‘outdoor<br />

classroom’ can best be integrated with the ‘in-door’ curriculum is one of the topics<br />

researched in a study funded by the Department for Education and Skills (DfES),<br />

the Countryside Agency, and Farming and Countryside in Education (FACE).<br />

See the Growing Schools website www.teachernet.gov.uk/growing<br />

schools/support/detail.cfmid=25 for the full report.<br />

UK Groundwater Forum<br />

UK Groundwater Forum, a group representing the groundwater community in the<br />

UK which aims to raise the awareness of groundwater and issues relating to its<br />

management (see www.groundwateruk.org). The review showed that groundwater is<br />

missing from relevant areas of the curricula (e.g. where the water cycle is referred to)<br />

and that in general the requirement to teach about water as a natural resource is not<br />

sufficiently great.<br />

David Macdonald – Email: dmjm@bgs.ac.uk<br />

Groundwater Museum<br />

The National Ground Water Research and Educational Foundation have developed a<br />

virtual museum. The Virtual Museum of Ground Water History Website has 7<br />

sections called ‘wings’ including:<br />

● Notable groundwater scientists<br />

● Drilling devices of yesteryear<br />

● Pumping equipment through the ages<br />

● Focus on the science<br />

● Tools of the trade<br />

● Aquifer maps – with cross-sections<br />

The site suggests that Alexander the Great may have been the first person to trace the<br />

path of groundwater – by using horse carcasses. Many of the photographs on the site are<br />

of specimens that are on display in the National Ground Water <strong>Association</strong> (NGWA)<br />

Headquarters in Westerville, Ohio, US. See www.ngwa.org/museum/museum.cfm<br />

The melting icet<br />

In March, Geotimes asked its online<br />

readers the question: Do you think<br />

the current melting in the Arctic and<br />

Antarctic poses future problems for<br />

<strong>Earth</strong><br />

Yes, but people can adapt 48%<br />

Yes, it will be catastrophic 36%<br />

No 10%<br />

Don’t know 6%<br />

From Geotimes online polls see<br />

www.geotimes.org<br />

Crater in the<br />

Sahara Desert<br />

Images from space have revealed the<br />

largest known crater visible in the<br />

Sahara. The structure spans 31 km –<br />

large enough to contain about 70,000<br />

football fields. Researchers at Boston<br />

University’s Center for Remote<br />

Sensing in Massachusetts, made the<br />

discovery in February, while looking at<br />

satellite images of Egypt’s Western<br />

Desert. The research team speculate<br />

that the crater formed when a<br />

meteorite hit the earth 100 million<br />

years ago.<br />

From an article by Kathryn Hansen<br />

in Geotimes, May 2006<br />

Glacial<br />

earthquakes<br />

The number of so-called glacial<br />

earthquakes, caused by the movement<br />

of glaciers, has doubled in recent<br />

years, coincident with the acceleration<br />

of many of Greenland’s major outlet<br />

glaciers. A group of researchers<br />

suggests that these observations<br />

indicate a rapid global response to<br />

changing climatic conditions.<br />

From an article by Ekstrom et al<br />

in <strong>Science</strong>, 24 March 2006<br />

www.esta-uk.org<br />

34


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Deep drilling<br />

For the first time, scientists have drilled<br />

through the <strong>Earth</strong>’s oceanic crust to<br />

collect intrusive igneous rock called<br />

gabbro. Supported by the Integrated<br />

Ocean Drilling Program (IODP), the<br />

scientists drilled through the volcanic<br />

rock that forms the <strong>Earth</strong>’s crust to reach<br />

a fossil magma chamber lying 1.4<br />

kilometres beneath the seafloor.<br />

The drilling was carried out in the<br />

Pacific Ocean, approximately 800 km<br />

west of Costa Rica by an international<br />

team of scientists aboard the research<br />

drilling ship JOIDES Resolution.<br />

“By sampling a complete section of<br />

the upper oceanic crust, we’ve achieved a<br />

goal scientists have pursued for over 40<br />

years, since the days of Project<br />

MoHole,” says Damon Teagle, National<br />

Oceanography Centre, University of<br />

Southampton, UK, and co-chief scientist<br />

of the drilling expedition. “Our<br />

accomplishment will ultimately help<br />

science answer the important question,<br />

‘how is new ocean crust formed’”<br />

Formation of ocean crust is a key<br />

process in the cycle of plate tectonics; it<br />

constantly ‘repaves’ the <strong>Earth</strong>’s surface,<br />

builds mountains, and leads to<br />

earthquakes and volcanoes. Project<br />

MoHole, begun in the 1950s, aimed to<br />

drill all the way through the ocean crust,<br />

into the <strong>Earth</strong>’s mantle.<br />

Jeffrey Alt of the University of<br />

Michigan, Expedition and co-chief<br />

scientist of an earlier leg of this mission<br />

explains that “having this sample from<br />

the deep fossil magma chamber allows<br />

us to compare its composition to the<br />

overlying lavas. It will help explain,” he<br />

says, “whether ocean crust, which is<br />

about six- to seven- kilometres thick, is<br />

formed from one high-level magma<br />

chamber, or from a series of stacked<br />

magma lenses.” He emphasizes that “the<br />

size and geometry of the melt lens<br />

affects not only the composition and<br />

thermal structure of the ocean crust, but<br />

also the vigour of hydrothermal<br />

circulation of seawater through the<br />

crust.” Alt states that such systems lead<br />

to spectacular black-smoker vents,<br />

modern analogues of ancient copper<br />

deposits and deep-ocean oases that<br />

support exotic life.<br />

IODP Program Director James Allan<br />

at the U.S. National <strong>Science</strong> Foundation,<br />

which co-funds IODP research with<br />

Japan, further clarifies what the<br />

expedition’s discovery represents. “These<br />

results,” he says, “coming from the<br />

structural heart of Pacific crust, confirm<br />

ideas from seismologic interpretation<br />

about how fast-spreading oceanic crust is<br />

built. They refine our understanding of<br />

the relationship between seismic velocity<br />

and crustal rock composition, and open<br />

new vistas for investigating the origin of<br />

lower oceanic crust, best addressed by<br />

deeper drilling.” NSF and Japan each<br />

provide a scientific drilling vessel to<br />

IODP for research teams.<br />

Geophysical theories have long<br />

projected that oceanic magma chambers<br />

freeze to form coarse-grained, black<br />

rocks known as gabbros, commonly used<br />

for facing stones on buildings and<br />

kitchen countertops. Although gabbros<br />

have been sampled elsewhere in the<br />

oceans, where faulting and tectonic<br />

movement have brought them closer to<br />

the seafloor, this is the first time that<br />

gabbros have been recovered from intact<br />

ocean crust.<br />

“Drilling this deep hole in the eastern<br />

Pacific is a rare opportunity to calibrate<br />

remote geophysical measurements such<br />

as seismic travel time or magnetic field<br />

with direct observations of real rocks,”<br />

says geophysicist Doug Wilson,<br />

University of California, Santa Barbara.<br />

Co-chief scientist on an earlier<br />

expedition to the same drilling site,<br />

Wilson was instrumental in helping to<br />

select the site drilled. His contribution to<br />

the research mission was through study<br />

of the ocean crust’s magnetic properties.<br />

“Finding the right place to drill was<br />

probably key to our success,” Wilson<br />

asserts. The research team identified a<br />

15-million-year-old region of the Pacific<br />

Ocean that formed when the East<br />

Pacific Rise was spreading at a<br />

“superfast” rate (more than 200<br />

millimetres per year), faster than any<br />

mid-ocean ridge on <strong>Earth</strong> today. “We<br />

planned to exploit a partially tested<br />

geophysical observation that magma<br />

chambers should be closest to the<br />

<strong>Earth</strong>’s surface, in crust formed at the<br />

fastest spreading rate. If that theory were<br />

to be correct,” reasoned Wilson, “then<br />

we should only need to drill a relatively<br />

shallow hole (compared to anywhere<br />

else) to reach gabbros.” Wilson and his<br />

colleagues proved the theory correct.<br />

Following three years of research and<br />

multiple trips to the site in question,<br />

the borehole that rendered the magma<br />

chamber is now more than 1,500 meters<br />

deep; it took nearly five months at sea<br />

to drill. Twenty-five hardened steel and<br />

tungsten carbide drill bits were used<br />

before the scientists’ work was<br />

complete. The rocks directly above the<br />

frozen magma chamber were extremely<br />

hard because they had been baked by<br />

the underlying magmas, much like<br />

tempered steel.<br />

IODP scientists want to return to the<br />

site of the unearthed magma chamber to<br />

explore deeper, in hopes of finding more<br />

secrets hidden deep within the ocean’s<br />

crust.Photos online at www.nsf.gov/<br />

news/news_summ.jspcntn_id=106899<br />

From Integrated Ocean Drilling Program<br />

(IODP) press release, 20 April, 2006.<br />

See http://www.iodp.org/<br />

News-Releases/superfast-spreadingcrust-3-news-release/www.iodp.org<br />

35 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

News and Views<br />

Mars.google.com<br />

Following on from Google <strong>Earth</strong>, which<br />

combines satellite images with other data<br />

into extensive 3D presentations and<br />

allows you to navigate the <strong>Earth</strong> and<br />

view the details of landscapes and<br />

features from the Grand Canyon to<br />

tsunami damage, there was the<br />

interactive google for the Moon. Now,<br />

you can also get a closer look at Mars.<br />

The homepage has elevations of Mars<br />

which range from 9 km below the<br />

planet’s average surface level to 21 km<br />

above the surface, and every crater and<br />

trench between. You can scroll across the<br />

surface, which is made up of more than<br />

17,000 photos seamlessly joined together<br />

and home in on areas that interest you.<br />

The photos were obtained by NASA’s<br />

Mars Odyssey spacecraft which has been<br />

orbiting the planet for about 5 years.<br />

You can also click on a list of features to<br />

explore, including: canyons, mountains,<br />

dunes, plains, ridges etc; on a particular<br />

mountain, for example Olympus Mons<br />

(which is 3 times as high as Mt Everest),<br />

watch videos or learn about the size and<br />

history of specific areas or features.<br />

See mars.google.com<br />

Deepest<br />

dinosaur<br />

The first dinosaur to be found in<br />

Norway is also the deepest discovered<br />

dinosaur in the world. It was<br />

recovered from 2,256 meters below<br />

the seafloor during drilling offshore in<br />

the North Sea.<br />

From The Research Council of<br />

Norway press release, 24 April, 2006<br />

Scientists ‘too busy’ for pupils<br />

A study suggests that the pressure to<br />

publish research means many scientists<br />

do not have time to go into schools to<br />

encourage pupils to take up sciences. A<br />

survey of 1,485 scientists found 64% said<br />

they needed to spend their time<br />

generating funds for their departments.<br />

The Royal Society survey also found 52%<br />

of respondents did not regard outreach<br />

work in schools, public debates or media<br />

interviews as important. The society said<br />

scientists needed more encouragement to<br />

share their knowledge.<br />

The survey of research scientists<br />

highlighted that taking part in public<br />

engagements was sometimes regarded as<br />

“fluffy” and “not good for their careers”.<br />

73% had received no training in talking<br />

about science to a non-specialist audience.<br />

However, the study also found that<br />

45% would like to spend more time<br />

engaging with the “non-specialist<br />

audience” about science and 74% of<br />

those surveyed had taken part in at least<br />

one public science event in the past 12<br />

months. Respondents said they would be<br />

motivated to undertake more public<br />

commitments if, by doing so, they<br />

generated rewards for their departments<br />

– 81% said this would be a key incentive.<br />

A spokesperson for the Royal Society<br />

said contact with practising scientists was<br />

one way to encourage young people to<br />

consider further study and careers in<br />

science.<br />

“Teachers can also gain a huge<br />

amount from meeting and talking to<br />

practising scientists as a way of updating<br />

their knowledge and refreshing their<br />

passion for modern science.<br />

“It is heartening that 50% of scientists<br />

surveyed identified schools and school<br />

teachers as being among the most<br />

important audiences to engage with.”<br />

Sir David Wallace, vice president of<br />

the Royal Society, said: “While the report<br />

identified that research pressures are a<br />

factor in discouraging involvement with<br />

science communication activities we<br />

should be careful not to paint an overly<br />

simplistic picture of ‘cause and effect’.<br />

“We need to see the profile of this kind<br />

of work being raised within departments<br />

so that it is seen as a more integral part<br />

of a well rounded career.”<br />

The aim of the study is to help<br />

funding organisations, universities and<br />

other research institutions devise a<br />

reward system for those scientists who<br />

get involved with public engagement<br />

activities. The survey was conducted<br />

with the support of Research Councils<br />

UK and the Wellcome Trust. The<br />

findings come as the number of students<br />

in Scotland taking most science subjects<br />

has fallen markedly.<br />

Statistics from the Scottish Executive<br />

have shown a fall of about 20% in<br />

students of physics and electronic<br />

engineering at Scottish universities in a<br />

decade. In England, though, the number<br />

of candidates taking sciences at A-level<br />

has risen slightly in the past two years. In<br />

2005, 33,164 students sat A-level<br />

chemistry, compared with 32,130 in 2004<br />

and entries for biological sciences rose<br />

from 44,235 to 45,664. But entries for<br />

A-level physics fell from 24,606 in 2004<br />

to 24,094 in 2005.<br />

Story from BBC NEWS:<br />

http://news.bbc.co.uk/go/pr/fr/-/<br />

1/hi/education/5124950.stm<br />

www.esta-uk.org<br />

36


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

A Curriculum for Excellence<br />

‘A Curriculum for Excellence’ (ACE) is the Scottish Curriculum which is being<br />

debated in the Scottish Parliament. The document ‘<strong>Science</strong> Rationale’ is available on<br />

the Scottish Executive website www.scotland.gov.uk. The Curriculum Review ACE<br />

aims to enable all young people to become:<br />

● Successful learners<br />

● Confident individuals<br />

● Responsible citizens<br />

● Effective contributors<br />

These 4 capacities underpin the curriculum for which there are 7 principles including:<br />

challenge and enjoyment, breadth, progression etc. The <strong>Earth</strong> <strong>Science</strong> Education Unit<br />

(ESEU) Scottish facilitators and the Scottish <strong>Earth</strong> <strong>Science</strong> Education Forum (SESEF)<br />

discussed the curriculum and the ‘big ideas of <strong>Earth</strong> science’ at the ESEU Scottish<br />

facilitators’ weekend in Stirling recently.<br />

See www.acurriculumforexcellencescotland.gov.uk.<br />

Natural History Museums supporting education<br />

A report ‘How can natural history museums support science education’ had been<br />

published by the Department for Education and Skills (DfES) in conjunction with the<br />

Natural History Museum, Manchester University and others. It shows a continuing<br />

need for <strong>Earth</strong> science input into museum educational programmes. The research had<br />

been carried out by a team at King’s College, London. See www.nhm.ac.uk<br />

Geophysics<br />

Education<br />

in the UK<br />

The British Geophysical<br />

<strong>Association</strong> (a joint association of<br />

the Royal Astronomical Society and<br />

the Geological Society of London)<br />

have undertaken a review of<br />

Geophysics education in the UK<br />

(see TES 31.1 page 38-39),<br />

producing recommendations to<br />

increase the number of graduates<br />

needed in the coming decades to<br />

address the major environmental<br />

and energy problems confronting<br />

society. The launch of the report<br />

was held on Monday 24th July at<br />

the Institute of Physics, London.<br />

ESTA Diary<br />

AUGUST<br />

5th - 6th August<br />

Rock’n’Gem Show<br />

Kempton Park Racecourse,<br />

Staines Road East (A308),<br />

Sunbury on Thames,<br />

West London<br />

Contact: www.rockngem.co.uk<br />

12th - 13th August<br />

Rock’n’Gem Show<br />

Royal Welsh Showground,<br />

Builth Wells, Mid Wales.<br />

Contact: www.rockngem.co.uk<br />

15th August<br />

4th Annual Rockwatch field trip to the<br />

Mendips<br />

Contact: www.rockwatch.org.uk<br />

Tel: 0207 734 5398<br />

SEPTEMBER<br />

2nd - 3rd September<br />

Rock’n’Gem Show<br />

Newton Abbot Racecourse,<br />

Newton Abbot, Devon<br />

Contact: www.rockngem.co.uk<br />

9th - 10th September<br />

Rock’n’Gem Show<br />

Newark Showground,<br />

Winthorpe,<br />

Newark,<br />

Notts<br />

Contact: www.rockngem.co.uk<br />

15th - 17th September<br />

ESTA Course and Conference<br />

Bristol University<br />

Contact: Martin Whiteley<br />

Email: mjwhiteley@yahoo.co.uk<br />

Tel: 07732 913812<br />

30th September<br />

Murchison House Open Day<br />

www.bgs.ac.uk<br />

Contact: David Bailey<br />

Email: deba@bgs.ac.uk<br />

Tel: 0115 936 3395<br />

OCTOBER<br />

2nd - 5th October 2006<br />

BGS Schools week<br />

Contact: David Bailey<br />

Email: deba@bgs.ac.uk<br />

Tel: 0115 936 3395<br />

21st - 22nd October<br />

Rock’n’Gem Show<br />

Kempton Park Racecourse,<br />

Staines Road East (A308),<br />

Sunbury on Thames,<br />

West London<br />

Contact: www.rockngem.co.uk<br />

28th - 29th October 2006<br />

Rock’n’Gem Show<br />

Margam Park,<br />

Margam Country Park,<br />

Neath, Port Talbot.<br />

Contact: www.rockngem.co.uk<br />

NOVEMBER<br />

4th - 5th November<br />

Geologists’ <strong>Association</strong> Festival of Geology<br />

University College London<br />

Contact: www.geologist.demon.co.uk<br />

37 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Reviews<br />

Sedimentary rocks in the field: a colour guide<br />

Dorrik A.V. Stow, 2005, London: Manson Publishing, 320 pp., paperback, £19.95, hardback, £39.95.<br />

ISBN 1-874545-69-3 (paperback), 1-874545-68-5 (hardback)<br />

The aim of Sedimentary rocks in the field is<br />

to prepare university and senior school<br />

students and professional and amateur<br />

geologists to collect and record<br />

information about sedimentary rocks<br />

from field exposures and to begin to<br />

interpret and understand them. Fifteen<br />

chapters cover the principles and<br />

techniques of description, classification,<br />

analysis and interpretation, and the<br />

characteristics of different groups of<br />

sedimentary rocks. Most comprise an<br />

initial section of text, diagrams and tables,<br />

followed by superbly reproduced field<br />

photographs, mostly taken by the author,<br />

each accompanied by concise but<br />

comprehensive information. There are<br />

over 400 of these and they are the most<br />

attractive and distinctive feature of this<br />

book. It is pocket-sized (just) and the<br />

paperback version has a sturdy textured<br />

card cover; this book is certainly intended<br />

to accompany its owner into the field!<br />

A Foreword by Arnold Bouma leads to<br />

an introductory overview of the book’s<br />

scope that explains the main subdivisions<br />

of sedimentary rocks and outlines their<br />

economic significance. Chapter 2<br />

introduces field techniques, covering<br />

safety, equipment, data recording<br />

techniques and initial analysis. Chapter 3,<br />

‘Principal characteristics of sedimentary<br />

rocks’, is the core of the book, containing<br />

about one-third of its pages and<br />

photographs. There follow 11 chapters<br />

dealing with conglomerates, sandstones,<br />

mudrocks, carbonates, siliceous sediments,<br />

phosphorites, coal and oil, evaporites,<br />

ironstones, soils and volcaniclastic<br />

sediments. Each chapter considers<br />

definitions and rock types, principal<br />

characteristics, and occurrence, and useful<br />

boxed sections explain field techniques<br />

specific to each lithology. A final chapter<br />

introduces the interpretation of<br />

sedimentary rocks and rock successions,<br />

covering facies, architectural elements,<br />

sequence stratigraphy, core analysis and<br />

depositional environments; most of these<br />

sections are again accompanied by carefully<br />

chosen photographs. The book concludes<br />

with a list of references and key texts, a<br />

comprehensive index, a detailed geological<br />

timescale, symbols for sedimentary logs,<br />

diagrams for grain size, sorting and<br />

roundness, stereonets and a sediment<br />

description checklist. Several of the most<br />

useful diagrams are reproduced on flaps to<br />

the front and back covers, although the<br />

insides of the covers are blank.<br />

Conventional textbooks can often be<br />

criticised for explaining everything but<br />

describing little, so that after studying<br />

the book you might know how, say,<br />

microbial lamination forms, but you<br />

couldn’t identify it in the field. Users of<br />

this book will certainly be able to<br />

identify most of the features they<br />

encounter in sediments and sedimentary<br />

rocks by comparing them to its<br />

photographs and tables. But a criticism<br />

often directed at image-based guides like<br />

this is that users may identify features<br />

and attempt to interpret them by<br />

matching them to their closest likeness,<br />

rather than by applying knowledge and<br />

understanding. Could this book do both<br />

jobs and act as a basic sedimentology<br />

textbook, providing the user with both<br />

descriptive knowledge and interpretive<br />

understanding<br />

Some aspects of the structure and<br />

order of the book seem to me to work<br />

against this aim. Dealing with field<br />

techniques before rock types and<br />

structures seems like putting the cart<br />

before the horse. The measurement and<br />

analysis of cross-bedding orientation, for<br />

example, come before the definition and<br />

description of cross-bedding. The<br />

principle of using grain size to draw a<br />

graphic log is introduced before the<br />

subdivisions of grain size. Similar<br />

problems arise within Chapter 3, where<br />

sedimentary structures are covered<br />

before sediment texture and<br />

composition; structures are described as<br />

occurring in certain sediment types<br />

before those sediment types have been<br />

described and defined. If the book is<br />

used as an identification key, these issues<br />

probably don’t matter, but they do limit<br />

its value as a basic sedimentology<br />

textbook. I feel that the initial chapters<br />

on field techniques and sedimentary<br />

rock characteristics would have been<br />

better grouped together with the final<br />

chapter on interpretations in a separate<br />

section from the lithology-based<br />

chapters. This could perhaps be<br />

considered for a second edition.<br />

Another concern is a degree of conflict<br />

between description and interpretation.<br />

The image-based approach is most<br />

appropriate to a descriptive handbook but,<br />

to his credit, Stow tries to help readers<br />

understand what they have identified. But<br />

this doesn’t always work. As just one<br />

illustration, Table 3.3 describes the<br />

‘properties’ of sedimentary components<br />

in order to help with identifying<br />

sedimentary rocks, but knowing that<br />

brachiopods ‘are common in Paleozoic<br />

and Mesozoic deposits’ will not help in<br />

recognising them. The problem is partly<br />

due to space limitations, but I fear that<br />

those studying a geology course – as<br />

opposed to those with a casual interest –<br />

will not find sufficient depth of treatment<br />

here and, useful as this book would<br />

undoubtedly be to them, it will take a<br />

secondary role to a conventional textbook.<br />

I was particularly disappointed that<br />

terminology and definitions are not used<br />

consistently and precisely throughout.<br />

For example, despite a clear definition on<br />

page 150, there is inconsistency in the<br />

use of the terms mudstone, mudrock<br />

and shale. Photograph 6.12 contrasts<br />

‘silt-rich’ with ‘mud-rich’, but Table 3.27<br />

clearly defines ‘mud’ as a term that<br />

encompasses silt. ‘Arenite’ is defined in<br />

Table 5.1 as equivalent to ‘siliciclastic<br />

sandstone’ and including matrix-rich<br />

wackes, whereas in Figure 5.1 lowmatrix<br />

‘arenites’ are contrasted with<br />

Cont. on page 40<br />

www.esta-uk.org<br />

38


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Introduction to Organic Geochemistry. Stephen Killops & Vanessa Killops.<br />

Blackwell Publishing. 2nd Edition, 2005. ISBN 0-632-06504-4 paperback. £29.99. 393pp.<br />

As an inorganic geochemist, with only<br />

distant school day memories of organic<br />

chemistry, I was interested in the offer to<br />

review this book, as much as anything to<br />

see what I was missing in this other,<br />

mysterious area of geochemistry.<br />

“Introduction to organic<br />

geochemistry” is an updated and<br />

expanded version of the Killops’ earlier<br />

volume, expanded to consider the fate of<br />

all organic matter, rather than<br />

concentrating on material of more<br />

interest to oil geologists. The inclusion<br />

of more environmental geochemistry is<br />

an expansion of the First Edition, which<br />

was published in 1993, and consideration<br />

of aspects of environmental change<br />

through geological time helps explain<br />

present day changes and how carbon<br />

cycling can be understood. With ever<br />

increasing interest in global carbon<br />

emissions, this is an important addition<br />

to the book.<br />

The book comes in 7 chapters<br />

covering about 320 pages – Carbon, the<br />

<strong>Earth</strong> and Life; Chemical composition of<br />

organic mater; Production, preservation<br />

and degradation of organic matter; Long<br />

term fate of organic matter in the<br />

geosphere; Chemical stratigraphic<br />

concepts and tools; The carbon cycle and<br />

climate; and Anthropogenic carbon and<br />

the environment. There are three brief<br />

Appendices, followed by an extensive<br />

Reference section, which contains in<br />

excess of a thousand references dating up<br />

to 2004, providing an excellent source of<br />

information for anyone who wants to<br />

follow up some aspect of the text. The<br />

book ends with an equally impressive<br />

Index with three columns of terms per<br />

page across 30 pages. Each chapter is well<br />

illustrated with clear greyscale diagrams<br />

and sketches of, at first glance, an<br />

alarming range or organic molecules.<br />

Alarming, that is, to the uninitiated, but<br />

by the time you have worked through<br />

Chapter 2 on the composition of organic<br />

matter, it all starts to make much more<br />

sense. The subsequent chapters then<br />

explain what happens to these organic<br />

molecules, how they react, change and<br />

interact in the geological environments.<br />

The coverage of this book addresses a<br />

range of disciplines – geology,<br />

sedimentology, archaeology, biology etc.<br />

and this make it a useful text across a<br />

broad spectrum of readers. The use of<br />

numerous text boxes skilfully introduces<br />

the background to a range of areas of<br />

<strong>Earth</strong> science, and thus makes the text<br />

much more accessible to the nonspecialist.<br />

This is very useful for novices<br />

in the field of organic geochemistry, and<br />

the definition of technical terms,<br />

highlighted in bold, where they first<br />

appear, make it much easier to keep up<br />

with the text. The Index is a great help<br />

here, with the location of the definition<br />

of these terms highlighted in bold.<br />

As someone who teaches inorganic<br />

geochemistry at BSc and MSc levels, it<br />

would have been useful to me if this<br />

book could have included some examples<br />

and case studies which could be used as<br />

part of lecture courses, presented in a<br />

form which could easily be slotted in to<br />

an undergraduate course. There is so<br />

much information here though, that it<br />

would be hard to know exactly what to<br />

pull out to add a couple of lectures into<br />

2nd year geochemistry course. The<br />

coverage is excellent, and as a text for an<br />

advanced undergraduate or Masters<br />

course in Organic Geochemistry it<br />

would be an excellent choice. If a future<br />

edition is planned, it would be useful to<br />

have a few key case studies, some data on<br />

which practical exercises could be<br />

structured, which could be used in lower<br />

level, general geochemistry courses, and<br />

this may help increase the appreciation of<br />

organic geochemistry amongst the<br />

student population – this is an area not<br />

widely taught in UK universities, and<br />

perhaps should appear more prominently<br />

in undergraduate <strong>Earth</strong> science courses.<br />

On the whole, however I was very<br />

impressed with this book. Obviously, in a<br />

book of this size, the coverage of<br />

different subjects varies, and you may not<br />

find your favourite bit of organic<br />

geochemistry represented as well as you<br />

would like, but there is no doubt that the<br />

breadth is extensive, and the depth is<br />

impressive. This really is more than an<br />

introduction to the subject, and will be a<br />

great source of information to both<br />

students and professionals alike, and at<br />

£29.99 it represents very good value for<br />

money as a reference or text book. As a<br />

final word, I have to admit that organic<br />

geochemistry is now somewhat less of a<br />

mystery than it was a few months ago,<br />

and if I need to know more, I know<br />

exactly where to start looking.<br />

Dr Nick Pearce<br />

Institute of Geography and earth <strong>Science</strong><br />

University of Wales<br />

Aberystwyth<br />

SY23 3DB<br />

Wales UK<br />

39 www.esta-uk.org


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

Reviews<br />

Discoverers of <strong>Earth</strong>’s History.<br />

Paul Mohr. Millbrook Nova Press, Tonagharraun, Corrandulla, Co. Galway, Ireland, 2005.<br />

ISBN 0-9543177-2-6. 65pp. price 10 euros incl postage.<br />

First impressions can be misleading.<br />

This book is a good example. The cover<br />

has the title Discoverers of <strong>Earth</strong>’s History<br />

(from Greece to Darwin). The title page has<br />

Discoverers of <strong>Earth</strong>’s History, Ideas on the<br />

rocks: Snapshots through the centuries from the<br />

earliest times up till Darwin. The text begins<br />

with Discoverers of <strong>Earth</strong>’s History:<br />

Brushstrokes through Human History. It all<br />

made me worry about the accuracy of<br />

the contents, particularly when I found<br />

that the first discoverer mentioned was<br />

Egyptian rather than Greek.<br />

The book itself consists of two and a<br />

quarter pages of introduction, a short list<br />

of recommended reading, a semichronological<br />

listing of authors<br />

considered to be important in the<br />

development of geology (with brief<br />

notes on their contributions), an index<br />

to authors names, and a couple of<br />

quotations from Aristotle. Despite my<br />

initial misgivings I enjoyed reading the<br />

book and I think that this could make a<br />

good start for anyone wanting a brief<br />

introduction to what some individuals<br />

may have contributed to the science.<br />

I was particularly pleased to see that the<br />

author had included writers from many<br />

parts of the globe, though I am sure that<br />

the coverage of non-European writers<br />

could have been expanded.<br />

Cont. from page 38<br />

matrix-rich wackes. Page 219 refers to<br />

‘lamination’ occurring ‘at the microscale<br />

(0.2-2 mm) and mesoscale (10-50 mm)’<br />

although Figure 3.1 clearly defines strata<br />

10-50 mm thick as ‘beds’ not laminae. A<br />

fieldwork manual must encourage care<br />

and precision in all aspects of<br />

observation and description, and I worry<br />

that such inconsistencies might, by<br />

example, allow sloppy, imprecise and<br />

ambiguous description and terminology<br />

to persist. These inconsistencies could be<br />

remedied in a second edition.<br />

Other niggles include the use of ‘paleo-’<br />

rather than ‘palaeo-’ and the parallel<br />

The problem is how can you follow up<br />

any individual There are no specific<br />

references to help you. For anyone with<br />

access to a good geological library the<br />

answer would be to consult Serjeant’s<br />

Geologists and the history of geology. He lists all<br />

the biographical works that he has found<br />

for each author (so, in the case of people<br />

like Darwin, lists can go on for several<br />

pages), and, if you have both supplements,<br />

he covers the period up to the early 1990’s.<br />

The difficulty is that you need several feet<br />

of shelf space for Serjeant. Mohr’s book is<br />

a much less daunting prospect.<br />

Information on an individual author<br />

ranges from a few lines, to just over a<br />

page. One problem that I found was that<br />

joint work is usually only included in the<br />

entry for one author. For example if you<br />

look up Sedgwick there is no reference<br />

to the naming of the Devonian System,<br />

nor is there a cross-reference to<br />

Murchison, where the joint work is<br />

mentioned. In the Lyell entry, Buckland<br />

is mentioned as influencing Lyell, but<br />

there is no individual entry for<br />

Buckland. In some cases information<br />

that I would have expected to see is not<br />

included under either author. For<br />

example, there is no mention of<br />

Sedgwick training Darwin in field<br />

geology prior to the voyage of the<br />

numbering of illustrations; 6.3, for<br />

example refers to a figure, a table and a<br />

photograph. There are a few errors in the<br />

plate numbers, and some of the hand-lens<br />

photographs of sediment composition<br />

don’t really work – but full marks for<br />

trying to show them. Some features<br />

highlighted in photographs do not seem to<br />

be defined in the text or tables, including<br />

loess, thrombolite and reef knoll.<br />

In summary, Sedimentary rocks in the<br />

field is comprehensive, superbly<br />

produced, attractive and ‘fit-forpurpose’.<br />

It will help you to recognise a<br />

vast range of features of sedimentary<br />

rocks and get you started on<br />

Beagle. I also felt it somewhat<br />

anachronistic that in the entry for<br />

Pythagoras (died 500 BC) it mentions<br />

that the <strong>Earth</strong> “is not itself at the centre<br />

of the universe (contra Aristotle)”, when<br />

in the Aristotle entry (died 322 BC)<br />

there is no mention of the problem.<br />

One or two entries brought me up<br />

with a jolt. Did Darwin really introduce<br />

the terms acid and basic to igneous<br />

rocks I had always understood that they<br />

were first used in the German literature.<br />

But I was amused by the start of the<br />

entry for Rudolph Erich Raspe (1737 –<br />

1794). The author of The adventures of<br />

Baron von Münchausen was a geologist!<br />

There is a lot more to this book than<br />

you might expect from its length, and<br />

the comments above are really nothing<br />

but minor quibbles. Although there is no<br />

attempt by the author to follow themes<br />

through time, it is possible to get some<br />

idea of how ideas developed and crossed<br />

national and linguistic boundaries. It<br />

certainly shows that many well-known<br />

stories about the origin of geological<br />

ideas ignore the real history and<br />

originators. I can see myself dipping in<br />

to my copy for many years to come.<br />

Antony Wyatt<br />

c/o 35 Livonia Road<br />

Sidmouth, Devon EX10 9JB<br />

understanding and interpreting them.<br />

As a check-list and aide-memoire to be<br />

taken into and used in the field, it is<br />

superb. For amateurs and those with a<br />

passing interest in sedimentary rocks,<br />

this book will probably suffice for the<br />

description and basic explanation of<br />

sedimentary rocks. Those with a greater<br />

interest in sedimentary rocks, who need<br />

a thorough understanding of what they<br />

see in the field, will probably now need<br />

two books; one chosen from a selection<br />

of existing textbooks, plus Dorrik Stow’s<br />

Sedimentary rocks in the field.<br />

Geraint Owen<br />

University of Wales Swansea<br />

www.esta-uk.org<br />

40


TEACHING EARTH SCIENCES ● Volume 31 ● Number 3, 2006<br />

21st Century <strong>Science</strong> GCSE – various GCSE <strong>Science</strong> texts published by Oxford University Press in 2006.<br />

Reviewed for their <strong>Earth</strong> <strong>Science</strong> content only.<br />

GCSE <strong>Science</strong> Higher. Editors: J.Burden,<br />

P. Campbell, A. Hunt, R Millar.<br />

ISBN 0-19-915024-9, paperback,<br />

£16.00. 272 pp.<br />

GCSE <strong>Science</strong> Foundation. Editors:<br />

J.Burden, P. Campbell, A. Hunt, R<br />

Millar. ISBN 0-19-915022-2,<br />

paperback, £15.00. 240pp.<br />

GCSE Chemistry. Authors/Editors: A.<br />

Hunt, A Grayson. ISBN 0-19-915050-8,<br />

paperback, £17.00. 269pp.<br />

GCSE Additional <strong>Science</strong>. Editors:<br />

J.Burden, A. Hunt, R Millar.<br />

ISBN 0-19-915044-3, paperback,<br />

£17.00. 271pp.<br />

GCSE <strong>Science</strong> Higher;<br />

GCSE <strong>Science</strong> Foundation<br />

I was really looking forward to<br />

undertaking this review, having been<br />

involved myself with a minor part of the<br />

development of the Pilot Resources for<br />

this exciting new course. The Pilot<br />

Resources text for Modules 1 to 3 of the<br />

Core course was extremely well written<br />

by Peter Campbell and Anna Grayson,<br />

and consistently illustrated with clear,<br />

accurate diagrams.<br />

My first reaction on opening the<br />

newly published GCSE <strong>Science</strong><br />

textbooks for the course was one of<br />

despondency – I happened to spot that<br />

“plate” had been replaced by “crust” on<br />

two diagrams, and that the clear flowing<br />

English had been replaced by sentences<br />

only one sixth of the length of this one!<br />

If this wasn’t “dumbing down” I<br />

wondered what was.<br />

I now realise what has happened and<br />

am less inclined to write in the tones of<br />

the apoplectic colonel from Tunbridge<br />

Wells. I am told that the pilot scheme,<br />

with over 70 schools taking part, was<br />

very successful, but that the Pilot<br />

Resources had been found “too<br />

difficult”. The authors have therefore<br />

been obliged to redraft their texts, whilst<br />

keeping most of the same graphics. The<br />

book I had started to read was for<br />

Foundation level GCSE students, so I<br />

simply express my alarm at the literacy<br />

levels expected of some students of this<br />

age group. The level of writing in the<br />

Higher book is rather more mature.<br />

The main topics covered in both<br />

GCSE <strong>Science</strong> Foundation and GCSE<br />

<strong>Science</strong> Higher in Section P1 are: Time<br />

and Space; Deep Time; Continental<br />

Drift and Plate Tectonics. Both books<br />

mention earthquake and volcano<br />

hazards, but only the Higher book<br />

relates plate tectonics to the Rock Cycle.<br />

Both books have a section on the<br />

extinction of the dinosaurs.<br />

As befits the ethos of the 21st<br />

Century <strong>Science</strong> project, students are<br />

encouraged to think about how the<br />

scientists involved reached their<br />

conclusions and disseminated them. In<br />

the dinosaur section, the asteroid theory<br />

is set alongside the eruption of the<br />

Deccan Traps, but the awkward fact that<br />

other flood basalt eruptions did not<br />

cause mass extinctions is commendably<br />

highlighted.<br />

On their own, the books would not<br />

enable students to answer all the<br />

questions set, but schools using the<br />

course are supplied with sets of<br />

worksheets, practical activities, audio and<br />

video clips etc. ESTA members who<br />

attended the Manchester Conference<br />

may recall Anna Grayson playing the<br />

audio tape of an interview with Fred<br />

Vine and a dramatisation of James<br />

Hutton and friends in a rowing boat at<br />

Siccar Point. I am familiar with the Pilot<br />

versions of the worksheets, but was not<br />

sent the current versions, although these<br />

were requested.<br />

So, on balance, I like the new books.<br />

They present a largely accurate picture,<br />

albeit in simple terms. So how did<br />

“crust” slip in to replace “plate” I<br />

suspect that the publishers had a hand in<br />

this, rather than the authors!<br />

GCSE Chemistry;<br />

GCSE Additional <strong>Science</strong><br />

Of course, the proper word is lithosphere,<br />

and this term features quite<br />

unashamedly in these other two books.<br />

In the chapter headed Chemicals of the<br />

natural environment, the four spheres –<br />

atmosphere, hydrosphere, lithosphere<br />

and biosphere are all named as sources<br />

of all the chemicals we need. “Metals<br />

from the lithosphere” have a section to<br />

themselves, as do “Human impacts on<br />

the environment”.<br />

The lithosphere is correctly described<br />

as comprising the crust and upper<br />

mantle acting together, and interactions<br />

between the spheres are outlined, in<br />

good <strong>Earth</strong> Systems style. A very brief<br />

account of a range of useful minerals and<br />

rocks is given, including reference to<br />

their atomic structure and how this<br />

influences their properties. Extraction<br />

techniques are outlined, linked to the<br />

chemistry of the processes. “The life<br />

cycle of metals” includes recycling and<br />

gives a thoughtful summary of<br />

environmental considerations.<br />

The first module in GCSE Chemistry<br />

is about Air Quality. The worksheets<br />

which accompanied the Pilot Resources<br />

described an investigation into the<br />

emissions from the Headteacher’s<br />

Mercedes, and I am assuming that this is<br />

still included! However, another feature<br />

of the Pilot which has been dropped<br />

from the text was a discussion of the<br />

evolution of the atmosphere over<br />

geological time. This is a pity, since the<br />

topic is included in many specifications,<br />

and is not easy to teach.<br />

GSCE Additional <strong>Science</strong> is a<br />

compilation of topics across Physics,<br />

Chemistry and Biology, and the chapter<br />

on Chemicals of the natural environment is<br />

identical to that described above.<br />

All the books are very well designed<br />

and carry helpful guidance to aid the<br />

student’s navigation around the text.<br />

Pictures and diagrams are mostly well<br />

chosen and clearly drawn, which must<br />

encourage anyone to want to use the<br />

book. The 21st Century <strong>Science</strong> course<br />

itself is highly structured and takes a<br />

while for the teacher to comprehend,<br />

but following it carefully should result in<br />

a positive experience for students, even if<br />

the <strong>Earth</strong> science forms only a small part<br />

of the whole.<br />

Peter Kennett<br />

142, Knowle Lane,<br />

Sheffield<br />

S11 9SJ<br />

41 www.esta-uk.org


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It is published quarterly. Advertising in the magazine<br />

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42


● <strong>Science</strong> Activities and Work Sheets .pages 7 - 16<br />

● Literacy Activities and Work Sheets . . . . . . . . .pages 17 - 26<br />

Teaching Resources<br />

There are a number of web-based resources for the <strong>teaching</strong> and learning of Geology aimed at<br />

all levels of the National Curriculum. The major sources are listed below and they can all be<br />

accessed from the ESTA website www.esta-uk.org<br />

Resource Level/Age Link Description<br />

GEOTREX<br />

ESEU<br />

JESEI<br />

NATURE FOR<br />

SCHOOLS<br />

AS & A2<br />

(16+ yrs)<br />

KS3 & KS4<br />

(11-16 yrs)<br />

KS3 & KS4<br />

(11-16 yrs)<br />

KS2 & KS3<br />

(7 -14 yrs)<br />

Geology Teacher’s Resource Exchange (GEOTREX) aims to facilitate<br />

networking and the sharing of resources and ideas, making <strong>teaching</strong> and<br />

learning more effective for everyone.<br />

The <strong>Earth</strong> <strong>Science</strong> Education Unit (ESEU), based at Keele University, provides a<br />

programme of in-service training for KS3 and KS4 in England and Wales that is<br />

designed to raise staff confidence and enthusiasm in <strong>teaching</strong> about the <strong>Earth</strong>.<br />

KS3 topics focus on the QCA Scheme of work, whilst the KS4 topics focus on<br />

the GCSE <strong>Science</strong> syllabus. In Scotland, the programme focuses on primary<br />

and lower secondary teachers via the 5-14 Guidelines for <strong>Science</strong> and Materials.<br />

The Joint <strong>Earth</strong> <strong>Science</strong> Education Initiative (JESEI) was developed specifically<br />

to help chemistry, biology and physics specialists with their <strong>teaching</strong> of <strong>Earth</strong><br />

science. It includes more than 40 activity-based topics that highlight the<br />

relevance and interest of <strong>Earth</strong> science to KS3 and KS4 pupils. Some of the<br />

resources are also useful for both younger and older audiences.<br />

English Nature has developed more than 100 lesson plans that provide activities<br />

and information to help pupils better understand nature and the natural<br />

environment. There are also suggestions for outdoor activities appropriate for<br />

almost all schools to use in their own locality. The resource pages support the<br />

National Curriculum at KS2 and KS3, with some material for KS1 (5-7yrs).<br />

Primary Level<br />

Working with Soils: This pack includes a booklet, Waldorf the Worm, relating the story<br />

of a family of worms, together with supporting activities and worksheets £6.00 + p&p<br />

Working<br />

With<br />

Soil<br />

Working with Rocks: This pack contains Christina’s Story, which tells the tale<br />

of a marble gravestone, together with supporting activities and worksheets.<br />

Sixteen full colour postcards depicting common building and ornamental<br />

stones are also included £6.00 + p&p<br />

Contents<br />

● The Map . .inside cover<br />

● Information . . . . . . . . . . . . .pages 1 - 3<br />

● How to Use the Work Sheets . . . . . . . . . . . . . .page 4 - 6<br />

● Numeracy Activities and Work Sheets . . . . . . .pages 27 - 30<br />

Authors<br />

This pack was wri ten and developed by members of the ESTA Primary Commi tee.<br />

Wall Maps<br />

United Kingdom Geology Wall Map (1:1 million, flat or folded) £4.00 + p&p<br />

Geological Map of the World (1:30 million, flat or folded) £6.50 + p&p<br />

Waldorf the Worm<br />

Practical Kits<br />

Fossils: Twelve<br />

representative<br />

replica fossils<br />

and data sheet<br />

in a boxed set<br />

£17.00 + p&p<br />

Rocks: Reference set<br />

comprising 15 large samples,<br />

with worksheets and notes<br />

£15.00 + p&p<br />

Rocks: Class Kit with 6 sets of<br />

15 medium-size samples,<br />

worksheets and notes<br />

£45.00 + p&p<br />

Enquiries and orders to earthscience@macunlimited.net

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