Arc-Continent Collision Gave Rise to Appalachian Mountains (IMAGE)

University of California - Berkeley

Arc-Continent Collision Gave Rise to Appalachian Mountains

Caption

Some 445 million years ago, the Eastern US (extreme left) sat in the tropics, where an island arc-continental collision created the Appalachian Mountains. That collision uplifted rocks that absorbed carbon dioxide, resulting in an ice age that lasted millions of years.

Credit

Nicholas Swanson-Hysell, UC Berkeley

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