Breakup and Assembly of Pangaea

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Presentation transcript:

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

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

1979 and 1994 data

Assembly of Pangaea

Rodinia

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