Question

How were the Appalachian mountains formed?​

Answer 1

Uplift and folding of the land. In the formation of the Appalachian Mountains, there was a chain of high volcanoes which eroded.

Several hundred million years later, the American and African plates collided (the Appalachian Orogeny), resulting in the Appalachian Mountains.

The Appalachians first formed roughly 480 million years ago during the Ordovician Period.

Answer 2

Explanation:

The ocean con tinued to shrink until, about 270 million years ago, the continents that were ances tral to North America and Africa collided. Huge masses of rocks were pushed west- ward along the margin of North America and piled up to form the mountains that we now know as the Appalachians. 

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