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Midterm

EOSC 110 First midterm notes.docx

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Department
Earth and Ocean Sciences
Course
EOSC 110
Professor
All Professors
Semester
Spring

Description
PlateTectonicsEarthLayerStructureInnerCoreSolidOuterCoreliquidMantleCrustTheCoreispredominantlyIronandNickelTheMantleLessdensewithabundantironmagnesiumsilicatesiLowerMantleisrigidiiAthenosphereisplasticiiiUppermostMantleisrigidTheCrustisfilledwithgraniticandbasalticrocksLithosphereUppermostMantleCrustRangesfrom50km200km2typesofCrustsOceanicandContinentalDivergentconvergentandtransformLithosphereinteractwithoneanotheriscalledACTIVEMARGINSTransitionsbetweenoceanicandcontinentalcrustwherethereisnointeractionbetweenplatesarereferredtoasPassiveMarginsTypicallymarkedbythickaccumulationofsedimentsbetweencontinentalandoceaniccrustPlateTectonicsIITheorythatContinentsaremovingFossilDistributionRangeoforganismsrestrictedbydispersalbarriersaregoodindicatorsofconnectionoflandmassesSimilarFossilsfoundindifferentcontinentsEvidenceofGlaciationDebrisleftbehindwhenglaciersmeltRockscalledTillitearefoundinsouthofdifferentcontinentsGlacialStriationsscratchmarksarefoundMovementofContinentswasabletobepredictedDivergentboundariesPlatespullapartPaleomagnetismRockscanlockintheorientationandpolarityofthemagneticfieldatthetimethattheyformProposalsformovingplateRidgePushMovementofplatesatridgesispropelledbyslidingalongtheelevatedlithosphereasthenosphereboundarySlabPullDensesubductinglithospherepullstheplatealongwithitMinerals
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