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Alleghanian Mountains

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Alleghanian Mountains
About 320 MYA, Africa collided with PNA, which formed the Alleghanian Mountains. We know that the Alleghanian Orogeny happened because the Alleghanian Orogeny formed the Appalachian Mountains, and the remains of the Appalachian Mountains are still here today. 260 MYA, when the Alleghanian Mountains started eroding, the Appalachian Mountains eroded, but not completely, so the parts that did not erode are the parts we see today. During this time, the Iapetus Ocean was narrowing and subducting, and it finally disappeared. All continents came together to form a supercontinent, Pangea, during this time. At this time, North America is tilted upside down, and on the equator.
About 230 MYA, Pangea started to split up into separate continents, a process
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