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Published byMae Hutchinson Modified over 8 years ago
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Plate Tectonics and Earth History
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Breakup and Assembly of Pangaea
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Locating the Continents Since 200 m.y. ago: Magnetic Stripes In Pangaea: Fit of Edges Before Pangaea – Fossil Assemblages – Collision History – Climate Indicators – Paleomagnetism
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Magnetic Dip The earth’s magnetic field has both a horizontal and a vertical direction
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Locating the Ancient Continents Paleomagnetism gives paleolatitudes accurate to about 10 degrees There is no way of determining paleolongitude The further back we go, the more pieces are unaccounted for
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Assembly of Pangaea
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Rodinia
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Closure of the Tethys
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Pangaea, 220 m.y.
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80 m.y.
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The Mediterranean, 20 m.y.
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The Mediterranean, 15 m.y.
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The Mediterranean, 6 m.y.
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Why Does the Middle East Have so Much Oil?
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The Collision of India and Asia
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Earthquakes in Asia
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Plate Tectonics and Western North America
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Western U.S. and the Andes
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How the West Was Stretched
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