• At the end of the Paleozoic, there was one continent and one ocean.
  • Then Pangaea began to break apart about 180 million years ago.
  • Earth's interior is hot.
  • Heat builds up beneath the supercontinent.
  • This causes the continent to buoy upward.
  • Continental rifting begins.
  • Basalt lava fills in the rift.
  • This could lead to seafloor spreading and the formation of a new ocean basin.
  • This basalt province is where Africa is splitting apart and generating basalt lava.
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