Alleghanian orogeny
Oxford Dictionary of Geography:
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Alleghanian orogeny
An orogeny extending from the Early Carboniferous to the late Permian, caused by a collision between North America and Africa, affecting an area from Alabama to Newfoundland, and resulting in the formation of the Appalachian Mountains.
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Oxford Dictionary of Geography
A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved.
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