Lecture 2 - Plate Tectonics 2017W2.pdf

Lecture 2 - Plate Tectonics 2017W2.pdf - EOSC110 SolidEarth...

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EOSC110 SolidEarth PlateTectonics
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Day 1: Questions to Guide Reading (plate movements & Earth interior) (Earth interior) (Plate Tectonics) OnlineResources
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Thephysical,chemical,andbiologicallawsthat operatetodayhavealsooperatedinthegeologic past. Forcesthatappearsmallcould,overlongspans oftime,produceeffectsthatwerejustasgreatas thoseresultingfromsuddencatastrophicevents. UNIFORMITARIANISM
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PlateTectonics USGS
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KeyindividualsintheHistoryofGeology BASICS:PLATETECTONICS LearningGoals IllustrateandlabelthelayersoftheEarth(InnerCore,Outer Core,MantleRegions,Crust)anddescribethebasicproperties oftheselayers(compositionandbehavior). Identifythecomponentsofthelithosphere. Recognizeandinterpretassociationsbetweenplate boundariesandassociatedfeatures(e.g.topography, volcanoes,earthquakes,ageofseafloor)
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THEEARTH SLAYEREDSTRUCTURE Plummeretal(2012) Figure1.7 TheEarthisdividedinto differentlayersthatare distinctintermsoftheir behaviourand composition.
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Predominantlyiron andnickel InnerCoreisSolid OuterCoreisLiquid TheCore Plummeretal(2012) Figure1.7
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TheMantle Lessdense Abundantironand magnesium Silicates LowerMantle rigid Asthenosphere plastic UppermostMantle Rigid Plummeretal(2012) Figure1.7
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TheCrust Leastdense Abundantsilicates Richerinpotassiumand sodium Plummeretal(2012) Figure1.7
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UppermostMantle+Crust=Lithosphere The uppermostmantle and overlying crust arelessdensethan theunderlyinglayers.Together, theyformtherigid
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