Tectonic Provinces of the Southern Appalachian Mountains
geologic cross-section of the southern appalachian mountains
National Park Service sites in the Appalachian Mountains have rocks and landscapes resulting from collision of North America with accreted terranes and the ancient continent of Gondwanaland.
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Modified from “Earth: Portrait of a Planet, by S. Marshak, 2001, W. W. Norton & Comp., New York.