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Plate Tectonics and Earth History. Breakup and Assembly of Pangaea.

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Presentation on theme: "Plate Tectonics and Earth History. Breakup and Assembly of Pangaea."— Presentation transcript:

1 Plate Tectonics and Earth History

2 Breakup and Assembly of Pangaea

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8 Locating the Continents Since 200 m.y. ago: Magnetic Stripes In Pangaea: Fit of Edges Before Pangaea – Fossil Assemblages – Collision History – Climate Indicators – Paleomagnetism

9 Magnetic Dip The earth’s magnetic field has both a horizontal and a vertical direction

10 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

11 Assembly of Pangaea

12 Rodinia

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20 Closure of the Tethys

21 Pangaea, 220 m.y.

22 80 m.y.

23 The Mediterranean, 20 m.y.

24 The Mediterranean, 15 m.y.

25 The Mediterranean, 6 m.y.

26 Why Does the Middle East Have so Much Oil?

27 The Collision of India and Asia

28 Earthquakes in Asia

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32 Plate Tectonics and Western North America

33 Western U.S. and the Andes

34 How the West Was Stretched


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