Appalachian Mountain Form (about 360 MYA)
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The Appalachian Mountains formed when Pangea happened. The Appalachian Mountains are the oldest mountain chain in North America. . For the last 100 million years, erosion has carved away the mountains, leaving only their cores standing. This mountain range derives its name from the Apalachees – an Indian tribe – and the term Appalachian refers to the entire mountain range as well as the hills and plateaus in the surrounding areas.
Pangea Forms (about 280 MYA)
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When Pangea formed all the continents were put together. Then they all started to drift away. Years later Alfred Wegener predicted The Continental Drift. They Drifted apart about 200 MYA. Pangea was assembled by the collisions of three main blocks, Gondwana, Euramerica, and Siberia. In the initial collision between Gondwana and the northern continents, South America abutted central Euramerica. The formation of this supercontinent had a number of side affects which could have led to species becoming extinct.