Redrawing the Map of Ancient Earth

I saw this MSNBC article and thought it would be great to highlight for the last day of Geography Awareness Week,since we hadn’t done too much on Physical Geography. Apparently geologists have identified a piece of the Appalachian Mountains in Mexico, in an outcropping of rock known as the Acatlan Complex. The Appalachian chain of mountains runs through the eastern part of the United States, and the new discovery is changing theories about how and when the Appalachians were formed and, more generally, what that means for what the Earth looked like about 420 million years ago.


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