How did Maines mountains form?
Maine’s present landscape has formed primarily by erosion. Even the tops of mountains have bedrock that formed at depth in the earth and has been uplifted and eroded. Our mountains are simply places where the bedrock has been worn down less than the bedrock of the neighboring areas. Different rocks resist erosion to different degrees, depending on their composition, texture, and structure. This phenomenon, termed differential erosion, accounts for the main landscape features of geologically old mountain belts such as the Appalachians.
