EES1_Lecture3_student - Today Plate Tectonics In 1596...

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    Today: Plate Tectonics
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    In 1596 Abraham Ortelius suggested that Africa and  Europe had been torn away from the Americas by  “earthquakes and floods” in Thesaurus Geographicus
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    1858 - Geographer Antonio Snider-Pelligrini From Adam to Noah After the Deluge
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    Alfred Wegener 1915-1930; developed the notion of Continental Drift, including supercontinent Pangea  based on: Coastline Shapes Fossil plants Fossil animals Geologic Structures His hypothesis was rejected
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    Early ideas: Continental drift
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    270 Ma Glacial Deposits at the Equator?!?
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    Glacial striations Glacial erratics
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    If continents  could move  then…  continuity of  glacial  deposits Arrows indicate ice  flow directions…
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    In 1921, S. African geologist Alexander du Toit started  assembling all paleontological and geological evidence  supporting the continental drift.  dispersion of plants w/ large seeds incapable of     wind transport across wide oceans modern Madagascarian worms closer to Indian     worms than nearby African worms eastern N. Am. worm closer to European worm     than to American Pacific coast worms Fossil (Paleontology) Evidence
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    Fossil (Paleontology) Evidence Freshwater(!)   Mesosaurus  fossils from The Earth , Tarbuck and Luntgens, 1987
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    Several fossil organisms have been found in common on different continents How can the same species evolve on widely separated continents???
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