Laboratory Manual for Introductory Geology 4e

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GEOTOURS EXERCISE 15Flowing Ice as a Sculptor of LandformsName:Course:Section:Date:Exploring Geology Using Google Earth1. Visit digital.wwnorton.com/geolabmanual42. Go to the Geotours tile to download Google Earth Pro and the accompanyingGeotours exercises file.Expand the Geotour15 folder in Google Earthby clicking the triangle to the left of the foldericon.Check and double-click the MonoCraters_TopoMap overlay to fly to the eastern side ofthe Sierra Nevada.Mountains in California, a region that hasexperienced considerable alpine/valley glaciation(note that you can select the overlay anduse the transparency slider at the bottom ofthe Places panel to make the overlay semitransparent).(a) Check and double-click the Featureplacemark. Identify the glacial landformrepresented by this linear ridge.(b) Check and double-click the Ridges Iplacemarks. Identify the glacial landformsrepresented by these linear ridges.(c) Check and double-click the Ridges II placemarks (leave the Ridges I placemarks checked). Which set of landforms(Ridges I or Ridges II) originated first? How do you know? Hint: You may want to toggle the topographic map onand off.(d) Check and double-click the Peak placemark. Identify the type of glacial landform represented by this triangularshapedpeak.(e) Check and double-click the Basin placemark. This amphitheater-shaped basin forms what type of glaciallandform? What is its valley called (relative to the Walker Creek valley that is labeled on the topographic map)?basin(f) Check and double-click the Curved Ridge placemark. What type of glacial landform is this curved ridge (which ismade up of well-sorted sediment)?valley15.5 GLACIERS AND CLIMATE CHANGE407
APPENDIX 15.1Glossary of Glacial LandformsErosional landformsLandform Type of glacier DescriptionArête Mountain Sharp ridge separating cirques or U-shaped valleysCirque Mountain Bowl-shaped depression on mountainside; site of snowfield that wassource of mountain glacierHanging valley Mountain Valley with mouth high above main stream valley; formed bytributary glacier that could not erode down as deeply as larger mainglacierHorn peak Mountain Steep, pyramid-shaped peak; erosional remnant formed by severalcirquesSculptured bedrock Continental Asymmetric bedrock with steep side facing the direction towardwhich the ice flowed; also called roche moutonnéeU-shaped valley Mountain Steep-sided valley eroded by a glacier that once filled the valleyDepositional landformsLandform Type of glacier DescriptionDrumlin Continental Streamlined (elliptical), asymmetric hill composed of till; the longaxis parallels glacial direction, the gentle side faces the directiontoward which the ice flowedEsker Continental Narrow, sinuous ridge made of outwash deposited by a subglacialstream in a tunnel at the base of a glacierGround moraine Mountain and continental Sheet of till deposited by a retreating glacierKettle hole Mountain and continental Depression left when a block of ice that had been isolated from amelting glacier is covered with sediment and meltsLateral moraine Mountain Till deposited along the walls of a valley when a mountain glacierretreatsOutwash plain Mountain and continental Outwash deposited by meltwater beyond the terminus of a glacierProglacial delta Continental Outwash deposited into a proglacial lakeTerminal moraine Mountain and continental Wall of till deposited when the terminus of a glacier remains in oneplace for a long timeLakes associated with glacial landscapesLandform Type of glacier DescriptionIce-marginal lake Mountain and continental Lake formed by disruption of local drainage by a glacierKettle lake Mountain and continental Lake filling a kettle holePaternoster lake Mountain One of a series of lakes filling basins in a glaciated valleyTarn Mountain Lake occupying part of a cirque408 CHAPTER 15 GLACIAL LANDSCAPES
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LABORATORY MANUALFOR INTRODUCTORY G
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CONTENTSPreface viiCHAPTER 1Setting
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CHAPTER 8Studying the Earth’s Lan
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PREFACEThis laboratory manual is ba
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exercises interspersed throughout t
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Supplements(available for download
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ABOUT THE AUTHORSAllan Ludman is Pr
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LEARNINGOBJECTIVES■ Understand ch
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One way to obtain more data would b
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TABLE 1.1 Basic definitions●●
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EXERCISE 1.2Reservoirs in the Earth
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EXERCISE 1.4Sources of Heat for Geo
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1.3 Units for Geologic MeasurementB
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FIGURE 1.5 Measuring the volume of
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FIGURE 1.6 The white cliffs of Dove
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MileFIGURE 1.7 Methods for dealing
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FIGURE 1.8 An example of the princi
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EXERCISE 1.9Name:Course:How Long Do
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APPENDIX 1.1Metric-U.S. Customary C
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LEARNINGOBJECTIVES■■Become fami
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plate between two continents, conti
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FIGURE 2.4 The Earth’s major clim
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More clues soon came from seismolog
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FIGURE 2.8 Magnetic reversals of th
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FIGURE 2.11 Rates of motion of the
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EXERCISE 2.7A Tale of Two RidgesNam
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EXERCISE 2.8Continental Rifting: Sp
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Even without any earthquake informa
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EXERCISE 2.10Estimating the Amount
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2.5.5 Hot Spots and Hot-Spot Tracks
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EXERCISE 2.11Name:Course:Determinin
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EXERCISE 2.12Name:Course:Long-Term
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GEOTOURS EXERCISE 2Analyzing Plate
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LEARNINGOBJECTIVES■ Understand wh
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When a mineral grows without interf
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FIGURE 3.1 Specimens of the mineral
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3.4.5 HardnessThe hardness of a min
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FIGURE 3.4 Crystals of some common
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FIGURE 3.6 Cleavage in common miner
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3.4.9 MagnetismA few minerals are a
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EXERCISE 3.7Identifying MineralsNam
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The minerals and elements we most r
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EXERCISE 3.9Mineral Resources in Yo
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GEOTOURS EXERCISE 3Extracting Miner
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APPENDIX 3.1Mineral Identification
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APPENDIX 3.2Determinative Tables fo
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APPENDIX 3.2Determinative Tables fo
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APPENDIX 3.3Common Minerals and The
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MINERAL PROFILE DATA SHEET NameSamp
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LEARNINGOBJECTIVES■■Understand
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FIGURE 4.1 The rock cycle.Heating a
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FIGURE 4.3 Typical grain shapes.(a)
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EXERCISE 4.2Describing a Rock’s T
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EXERCISE 4.3Understanding the Origi
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EXERCISE 4.4Interpreting the Textur
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■ Hardness: Use a steel safety pi
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FIGURE 4.6 Flowchart for determinin
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4.8 The Economic Value of RocksMost
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FIGURE 4.7 Examples of igneous, sed
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GEOTOURS EXERCISE 4Deciphering Land
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crystalline rocks. Those that are s
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EXERCISE 5.3Interpreting Igneous Co
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FIGURE 5.4 Volcanic glasscontains n
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EXERCISE 5.5Interpreting Fragmental
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Felsic igneous rocks (from feldspar
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minerals melt, and (3) how plate-te
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EXERCISE 5.8Insights from Melting a
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EXERCISE 5.9Explaining Features of
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extreme crustal stretching has expo
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EXERCISE 5.13Interpreting Plate-Tec
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FIGURE 5.12 Distribution of volcano
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FIGURE 5.14 Comparison of areas in
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EXERCISE 5.15Stratovolcano Disaster
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GEOTOURS EXERCISE 5Exploring the Na
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IGNEOUS ROCKS STUDY SHEET NameSampl
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FIGURE 6.2 Chemical weathering of f
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FIGURE 6.3 The five steps in clasti
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6.3.2 Chemical Sedimentary RocksChe
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6.3.3 Biochemical and Organic Sedim
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TABLE 6.2 Classification of common
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FIGURE 6.5 Flow chart for identifyi
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FIGURE 6.6 Sediment sorting.(a) Poo
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EXERCISE 6.7Recognizing Sediment De
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FIGURE 6.9 Sedimentary rock beds.(a
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FIGURE 6.12 Cross bedding, a type o
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FIGURE 6.15 Fossils reveal remarkab
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FIGURE 6.16 Examples of depositiona
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EXERCISE 6.10Interpreting Sedimenta
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SampleTexture(grain size, shape,sor
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FIGURE 7.1 Examples of changes from
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FIGURE 7.2 Growth of metamorphic mi
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FIGURE 7.3 Types of stress.(a) Comp
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FIGURE 7.5 Photomicrographs of rock
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FIGURE 7.6 Varieties of gneiss form
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EXERCISE 7.2Identifying Metamorphic
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FIGURE 7.11 Settings of metamorphis
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EXERCISE 7.4Interpreting the Type o
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EXERCISE 7.5Name:Course:Index Miner
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Sample Minerals presentMETAMORPHIC
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Sample Minerals presentMETAMORPHIC
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EXERCISE 8.1Which Image Works Best?
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More sophisticated grid systems are
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EXERCISE 8.2The Latitude/Longitude
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EXERCISE 8.3Locating Points with th
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EXERCISE 8.4Locating Points with th
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But which north is north? No, this
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e300FIGURE 8.10 An area in eastern
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8.4 Vertical Exaggeration:A Matter
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GEOTOURS EXERCISE 8Locating Places
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LEARNINGOBJECTIVES■ Understand ho
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this information on the most recent
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FIGURE 9.5 Digital elevation model(
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250300300FIGURE 9.7 Hachured contou
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9.3.4 Rules and Applications of Con
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EXERCISE 9.6Name:Course:Survival of
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FIGURE 9.8 Map of the microwave tow
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FIGURE 9.11 The effect of vertical
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GEOTOURS EXERCISE 9Working with Top
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APPENDIX 9.1Topographic Map Symbols
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Interpreting GeologicStructures on
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of structures on the ground (the ma
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EXERCISE 10.2The Basic Types of Con
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EXERCISE 10.3Determining Strike and
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FIGURE 10.4 Block diagrams.Map view
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FIGURE 10.6 Block diagrams showing
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FIGURE 10.7 Hanging wall, footwall,
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is not the same as that of the beds
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EXERCISE 10.9Name:Course:Interpreti
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FIGURE 10.9 Geologic maps (continue
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EXERCISE 10.11Name:Course:Using Sym
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EXERCISE 10.12Name:Course:Construct
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EXERCISE 10.13Interpreting Simple G
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FIGURE 10.13 Structural control of
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10.6 Reading Real Geologic MapsYou
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FIGURE 10.14 (continued).Geologic M
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EXERCISE 10.18Making a Geologic Map
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GEOTOURS EXERCISE 10Name:Course:Und
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S-waves (FIG. 11.2b) are seismic wa
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FIGURE 11.4 Worldwide distribution
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FIGURE 11.5 Travel-time curves show
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EXERCISE 11.4Name:Course:Locating a
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EXERCISE 11.4Locating an Earthquake
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EXERCISE 11.4Name:Course:Locating a
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EXERCISE 11.5Name:Course:Determinin
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11.5 Predicting EarthquakeHazards:
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EXERCISE 11.7Locating Liquefaction
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After watching dramatic images of t
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APPENDIX 11.1Seismic Analysis Works
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LEARNINGOBJECTIVES■■Determine t
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EXERCISE 12.2Relative Ages in Cross
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EXERCISE 12.3Applying the Principle
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EXERCISE 12.4Name:Course:Using Sedi
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FIGURE 12.6 How the three kinds of
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EXERCISE 12.5Name:Course:Decipherin
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becoming extinct. When we find an i
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EXERCISE 12.6Name:Course:Dating Roc
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FIGURE 12.9 Changing parent:daughte
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EXERCISE 12.7Putting It All Togethe
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EXERCISE 12.8What Numerical Ages Ca
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EXERCISE 12.9Correlation (continued
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EXERCISE 12.10Cretaceous Paleogeogr
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Landscapes Formed13by StreamsStream
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EXERCISE 13.1Differences between St
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EXERCISE 13.2Why Some Streams Meand
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RFIGURE 13.5 The Genesee River sout
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EXERCISE 13.2Why Some Streams Meand
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FIGURE 13.8 A floodplain and its as
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ST. FRANCIS CO4070797064UNION PACIF
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1000Big900900B I G H I L LARKANSAS9
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FIGURE 13.13 Major drainage basins
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anchWTJ54MurphyNew BloomfieldTown65
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EXERCISE 13.6Recognizing Stages of
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MT T L E62446267DogRock757266170634
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13.7 When Streams Don’t Seemto Fo
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EXERCISE 13.7Deducing the History o
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13.8 When There’s Too Much Water:
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EXERCISE 13.9Estimating Potential F
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13.9 Streams, Society, and the Envi
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Page 384 and 385: EXERCISE 14.1Factors Affecting Infi
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Page 388 and 389: FIGURE 14.2 Groundwater landscape e
Page 390 and 391: 60075000750600FIGURE 14.4 Karst top
Page 392 and 393: FIGURE 14.5 The water table separat
Page 394 and 395: EXERCISE 14.4Effects of a Changing
Page 396 and 397: 100100100FIGURE 14.9 Karst topograp
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Page 400 and 401: EXERCISE 14.7Name:Course:Environmen
Page 402 and 403: EXERCISE 14.8Name:Course:Environmen
Page 404 and 405: Glacial Landscapes15These jagged mo
Page 406 and 407: FIGURE 15.2 Mountain and continenta
Page 408 and 409: EXERCISE 15.1Comparison of Glaciers
Page 410 and 411: EXERCISE 15.3Erosional Features of
Page 412 and 413: 15.3.2 Depositional LandscapesLands
Page 414 and 415: EXERCISE 15.4Landforms at the Termi
Page 416 and 417: 900900800BOWEN1000700C R E E K900RO
Page 418 and 419: 450400LEMON400ROADSLAYTON4504503Spo
Page 420 and 421: 15.4 Landscapes Producedby Mountain
Page 422 and 423: The base level for a tributary stre
Page 424 and 425: 3700380036003900Northwest BasinLake
Page 426 and 427: FIGURE 15.17 Atmospheric temperatur
Page 430 and 431: GRID: 10/inch = 39,4/10cm
Page 434 and 435: Processes and Landforms16in Arid En
Page 436 and 437: FIGURE 16.2 Types of arid regions.(
Page 438 and 439: 16.2 Processes in Arid RegionsNow l
Page 440 and 441: 16.3 Progressive Evolution of Arid
Page 442 and 443: EXERCISE 16.3Interpreting Arid Land
Page 444 and 445: EXERCISE 16.3Interpreting Arid Land
Page 446 and 447: RiverGila85WatermanWashR A I N B O
Page 448 and 449: 85130011001000FIGURE 16.8 Topograph
Page 450 and 451: FIGURE 16.10 Characteristics and ev
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Page 454 and 455: FIGURE 16.13 Vulnerability to deser
Page 458 and 459: Shoreline Landscapes17Coastlines co
Page 460 and 461: FIGURE 17.1 Types of shorelines.(a)
Page 462 and 463: EXERCISE 17.1Erodibility and Stabil
Page 464 and 465: 17.2.5 Emergent and Submergent Shor
Page 466 and 467: 1382427FIGURE 17.5 Maine coastline
Page 468 and 469: EXERCISE 17.5Measuring Sea-Level (a
Page 470 and 471: FIGURE 17.7 Area just south of Lake
Page 472 and 473: 17.3.2 Coastal Erosion and Depositi
Page 474 and 475: FIGURE 17.11 Erosional features of
Page 476 and 477: EXERCISE 17.7Erosional Processes an
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17.3.5 Depositional FeaturesPromine
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EXERCISE 17.9Depositional Processes
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FIGURE 17.18 The shoreline of theno
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FIGURE 17.21 Aerial view showing ho
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EXERCISE 17.10Name:Course:Unintende
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FIGURE 17.24 Counterclockwise wind
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EXERCISE 17.11Name:Course:Effects o
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FIGURE 17.27 Flooding caused by hur
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EXERCISE 17.12Effects of Storm Path
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GEOTOURS EXERCISE 17Understanding T
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GRID: 10/inch = 39,4/10cm
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LEARNINGOBJECTIVES■ Explain why p
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EXERCISE 18.1Humans and Earth Syste
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EXERCISE 18.2Short-Term Changes in
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Weather describes atmospheric condi
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FIGURE 18.5 The greenhouse effect.G
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EXERCISE 18.3Name:Course:Assessing
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FIGURE 18.8 Movement of water from
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FIGURE 18.10 Projected sea-level sc
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EXERCISE 18.4Effects of Sea-Level R
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FIGURE 18.13 Estimated human popula
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FIGURE 18.14 Two bird species hunte
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EXERCISE 18.6Name:Course:How Quickl
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GEOTOURS EXERCISE 18Inducing Change
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Courtesy of Allan Ludman; p. 162 (t
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270 280260240 250290 300Clay310 320
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Align with northern latitude tick m
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