1CONTINENTAL DRIFT AND PLATE TECTONICSSupercontinent 200 m.y.a.Shelf fit of southern continentsMesosaurus occurrencesOther fossil locations• http://www.mu.edu/classes/day/images/PlateTechtonics/fossils.gifStructure across ocean2Structure matchedOccurrence of Southern GlaciationMatch of Southern GlaciationClimate distribution• http://www.mu.edu/c lasses/day/images/PlateTechtonics/climatezones.htmChange in pole position• http://www.mu.edu/c lasses/day/images/PlateTechtonics/climatezones.htm3Climatic change with drifting• http://www.geol.umd.edu/~piccoli/100/ch9_2.htmSupercontinent 200 m.y.a.• http://terra.chemeketa.edu/Faculty/fraa/geology/topics/tectonics/photos/htmls/world-sea-floor2.html • http://terra.chemeketa.edu/Faculty/fraa/geology/topics/tectonics/photos/htmls/pacific-sea-floor.html• http://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_quakes_world_990707_flat.htmlLithospheric Plates4Earth’s structureEarth’s outer shellRelationship of crust, lithosphere and asthenosphere• http://earth.geol.ksu.edu/sgao/g100/plots/0829_12_litho.jpgTwo types of crust5Active Volcanoeshttp://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_plate_tectonics_world.htmlThree types of plate boundarieshttp://earth.geol.ksu.edu/sgao/g100/plots/0829_3boundaries.jpgDiverving plate summaryDiverging Plates6Icelandic Rifthttp://earth.geol.ksu.edu/sgao/g100/plots/0829_09_iceland.jpgTransform BoundaryTRANSFORM FAULTS Transform Fault BoundarySan Andreas Transform Faulthttp://earth.geol.ksu.edu/sgao/g100/plots/0829_11_saf_photo.jpg7Three types of convergent marginshttp://earth.geol.ksu.edu/sgao/g100/plots/0829_10_convergent.jpgPeru-Chile Trenchhttp://earth.geol.ksu.edu/sgao/g100/plots/0829_10_convergent.jpgOcean-Continent Convergencehttp://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_plate_tectonics_cascades.htmlOcean-Ocean Convergence Japan Trench Volcanic arc matures into complex small continental crust fragments over timehttp://earth.geol.ksu.edu/sgao/g100/plots/0829_10_convergent.jpg8Location of Pacific Trenches India-Asia before collisionHimalayas as a result of collisionContinent-Continent Convergence (Yes, I know the words are backward. It’s so the suture and subduction angles match the other illustrations)Indian Plate MovementHimalayan Suturehttp://earth.geol.ksu.edu/sgao/g100/plots/0829_10_convergent.jpg9Summary of types of convergent plate margins Ocean continent Ocean ocean Continent continentJuan de Fuca PlateSEA-FLOOR SPREADING AND PLATE BOUNDARIES Juan de Fuca Platehttp://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_juan_de_fuca_ridge.htmlAge of Emperor Seamount ChainVelocities of Plates10Radio Telescope Plate MapAnimation linkhttp://www-personal.umich.edu/~vdpluijm/pla tes.gifhttp://www.ucmp.berkeley.edu/geology/tectonics.htmlDynamo that creates magnetic fieldhttp://www.nasa.gov/vision/earth/lookingatearth/29dec_magneticfield.htmlMagnetic Reversals in volcanic stratigraphyMagnetic Reversal Age Scale11Magnetic Anomalieson sea floorLava Magnetized in Normal FieldLava Magnetized in reversed fieldSea floor spreading documented by magnetic reversalsMagne-tometer SurveyAge of Sea
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