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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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Presentation Transcript
locating the continents
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
Magnetic Dip
  • The earth’s magnetic field has both a horizontal and a vertical direction
locating the ancient continents
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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