Breakup and Assembly of Pangaea

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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 earths 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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1979 and1994 data
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Assembly of Pangaea
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Rodinia
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