New Solid Geology GIS for South Australia - SA Explorers

New Solid Geology GIS for South 

Australia 

Wayne Cowley 

Geological Survey Branch 

Minerals and Energy Division 

Primary Industries and 

Resources SA

New Solid Geology GIS for South Australia 

t I o nNew Solid Geology GIS for South Australia 

r A c c e l e r a t I n g E x p l o r a 

P A C E : A P l a n F o 

WHY DO WE NEED THESE DATA? 

•Integrate with other digital geological datasets in order to 

gain new insights into prospectivity 

p •Provide a link to geology and mineral systems in 

neighbouring States and formerly attached terranes 

•Solid S geology GIS is a window into the geology hidden 

below younger sedimentary basins and regolith 

SACOME





WHY DO WE NEED THESE DATA? 

•Understand the broad geological architecture of the State 

•Track the history of geological events and mineralising 

processes in SA over time 

•Provide a regional perspective to more detailed studies 

and exploration projects 




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r A c c e l e r a t I n g 


EXISTING SOLID GEOLOGY 

MAP 

• In Bulletin 54, Geology of South 

Australia (1993) 

• Archaean to Early Palaeozoic 

Tectonic Provinces 

• ie up to the end of the Cambro- 

Ordovician Delamerian Orogeny 






PROJECT CONCEPT 

•This project, commenced in 2000, is to produce a new 

State tectonic and basin GIS database. This was necessary 

because of: 

- alackofup-to-date State-wide compilations showing 

tectonic features and sedimentary basins in the map 

and GIS information offered to our customers, and 

used in-house… 

- …an explosion of new geological and geophysical data 

since 1993, and still continuing, generated in large 

part by mineral and petroleum exploration stimulated 

by PIRSA initiatives 

- the widespread use of GIS systems, enabling easy 

interrogation, ti manipulation and update of map data 




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PROJECT THEMES 

•develop broad time-slice concept for entire geological 

history of SA, with eight time slices separated by major 

breaks in the record 

•within these time-slices, revise boundaries of geological 

provinces, sub-provinces, basins and 

sub-basins for storage in GIS 




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PROJECT THEMES 

•create time-space diagrams to enable ready visualisation 

of the State’s entire geological history in a temporal and 

geographic context 

•develop an Archaean-Ordovician solid geology GIS dataset 

and map 






SOLID GEOLOGY DATA SOURCES 

•Incorporate and standardise pre-existing province solid 

geology interpretations, some of which were updated 

during course of project: 

- Kanmantoo Province (Peta Abbot) – (1997) 

- north, west and south Gawler Craton (1994-1997) – 

combined and extended, with revised versions 

produced by Martin Fairclough, Michael Schwarz 

(2003, 2004) 

- Curnamona Province (1996 and 2000), revised version 

by Andy Burtt and Peter Betts in 2003 







•Incorporate and standardise newly released province solid 

geology interpretations: 

- Warburton Basin [eastern part] (Rod Boucher – Linex, 

for Petroleum Group) - 2002 

- Musgrave Block (Leigh Rankin – GeoInterp) - 2002 

- Officer Basin (Leigh Rankin – GeoInterp , for Petroleum 

Group) - 2003 

- northern Murray Basin basement (Adrian Fabris) - 2003 




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•Regions for which no coherent up-to-date solid geology 

interpretation existed: 

- Coompana Block 

- Adelaide Geosyncline 

- Stuart and Spencer Shelves 

- southern Officer Basin… 




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•Regions for which no coherent up-to-date solid geology 

interpretation existed: 

- …Gairdner Dyke Swarm 

- western Warburton Basin and Amadeus Basin 

- Polda Trough 

- offshore Gawler Craton and Kanmantoo Province 







•Other sources of data used to create solid geology for 

these regions: 

- outcrop polygons from 1:2 000 000 State surface 

geology map 

- scanned tectonic sketches from 1:250 000 published 

maps 

- drillhole stratigraphic logs from SA_GEODATA 

- geophysical imagery 

- other published geological references 


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SOLID GEOLOGY 


• Archaean-Ordovician Solid 

geology dataset comprises four 

layers (geology polygons and 

faults): 

• Archaean to Early 

Mesoproterozoic (Gawler 

Craton, Curnamona 

Province) 

• Middle Mesproterozoic 

(Musgrave Province) 

• Late Mesoproterozoic 

(Cariewerloo Basin) 

• Neoproterozoic to 

Ordovician (to Delamerian 

Orogeny) 


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SOLID GEOLOGY 


• layers can be displayed 

separately or superimposed 

(as here) 

• incorporates optimum spatial 

and stratigraphic detail, 

allowing simplified versions to 

be easily generated for 

various purposes 




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P A C E : A P l a n F o r A c c e l e r a t I n g 

SOLID GEOLOGY 

GIS dataset includes reference comprising two parts: 

Time-space diagram… 






…and 

stratigraphic 

table: 

These text 

data form 

basis of 

entries to 

attribute 

tables in GIS 

dataset 

Warburton Basin 

O-ip Pondrinie Basalt Trachytic basalt, some with olivine, some amygdaloidal 

O-i Oi Innamincka Formation Deltaic red-bed shale, siltstone and sandstone 

E-j Jena Basalt Within-plate amygdaloidal basalt, hyaloclastite, porphyritic and trachytic basalt 

EOu Dullingari Group Slope to basinal shale, siltstone, lime mudstone; minor sandstone and pebbly sandstone at top 

Diamond Bog Dolomite; 

Kalladeina Formation; Pando 

EO4 Formation 

Vuggy dolomite; shelf limestone, dolomite, siltstone, shale and sandstone; glauconitic sandstone 

Mooracoochie Volcanics; 

E-m 517±9Ma 

Volcaniclastics, porphyritic trachyte, dacite 

N unnamed Undifferentiated Neoproterozoic rocks 

LN unnamed Undifferentiated Proterozoic basement 

Kersaint Block 

AO unnamed inferred outlier: ?Delamerian granitic gneiss at Young Rocks intrudes unknown basement 

Kanmantoo Province; basement to Murray Basin 

O2 unnamed Post-Delamerian basalt and dolerite 

EOd26 Late/post-Delamerian mafic-ultramafic intrusives including Black Hill Norite; 497±10 - 482±20 

EOd27 

British Empire Granite, 

Mudnawatana Tonalite 

Late/post-Delamerian felsic intrusives: British Empire Granite and Mudnawatana Tonalite; 442±6 - 

427±133Ma 

EOd25 

Late/post-Delamerian felsic intrusives including Murray Bridge and Mannum Granites; 497±10 - 471±12Ma 

EOdb Bungadillina Monzonite Pre/syn-Delamerian felsic intrusive: Bungadillina Monzonite; 527±27Ma 

EOd24 

Pre/syn-Delamerian felsic intrusives including Rathjen Gneiss; 564±57 - 486±6Ma 

EOd23 unnamed Syn-Delamerian mafic intrusives 

EO 

undifferentiated Cambro-Ordovician metasediments, including Kanmantoo Group? 

Ek4 unnamed possible volcanics intercalated with Kanmantoo Group metasediments 

Eo9 

felsic-intermediate volcanics, including Teal Flat and Marne River Volcanics; 521±4 - 478±23Ma; 

intercalated with Kanmantoo Group metasediments 

Ek3 unnamed mafic volcanics intercalated with Kanmantoo Group metasediments 

Ek Kanmantoo Group undifferentiated Kanmantoo Group: metasandstone, phyllite, schist, gneiss 

mafic volcanics, including Truro Volcanics, intercalated with Normanville and/or Kanmantoo Group 

Eo8 

metasediments 

En Normanville Group Normanville Group: carbonate rocks, basal sandstone 

undifferentiated Neoproterozoic to Cambrian metasediments, Neoproterozoic-Ordovician volcanics and 

NO1 unnamed 

mafic intrusives 

NE1 unnamed undifferentiated Neoproterozoic to Cambrian metasediments 

Nox Boucaut Volcanics Boucaut Volcanics: felsic and mafic volcanics; 777±7Ma 

N unnamed undifferentiated Neoproterozoic sediments 

Lb Barossa Complex Barossa Complex 




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WHERE TO FROM HERE? 

•first edition Solid Geology of South Australia GIS DVD 

released today with map of combined time slices 

•prepare hardcopy maps of individual time slices 

•complete province and basin boundary datasets 

•ongoing update of all components of tectonic, basin and 

solid geology maps with new data 




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Mintabie 

Challenger 

Lambina 

Peculiar Knob 

Myrtle 

Prominent Hill 

Springs, Mt 

Hutton 


Tarcoola 

Tunkillia 

Myall 

Hawks Nest 

Mt Gunson 

Carrapateena 

Reliance 

Portia 

Kalkaroo 

White Dam

New Solid Geology GIS for South Australia - SA Explorers

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