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Breakup and Assembly of Pangaea

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

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Breakup and Assembly of Pangaea

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  1. Breakup and Assembly of Pangaea

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

  3. Magnetic Dip • The earth’s magnetic field has both a horizontal and a vertical direction

  4. 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

  5. 1979 and1994 data

  6. Assembly of Pangaea

  7. Rodinia

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