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http://www.msnbc.msn.com/id/15774076/

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A section of the Appalachian Mountains discovered in Mexico is forcing scientists to redraw their maps of ancient Earth.

The Appalachians are a series of mountain ranges in eastern North America that extend from Southern Quebec in Canada to northern Alabama. A piece of the chain was recently uncovered in a large Mexican outcropping of rock, known as the Acatlan Complex.

Analyses of the rocks revealed they were formed on the ocean floor, and dating showed they were much younger than previously thought.
 
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