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Parts of the central and southern Appalachian orogen appear to have evolved away from Proterozoic North America (Laurentia) and to have been accreted to it during the Paleozoic orogenies that collectively formed the orogen. Identifying each tectonostratigraphic terrane is a necessary step in understanding the evolution of the orogen. The terranes in the central and southern Appalachians are delineated, interpreted, and classified with varying degrees of confidence as: (1) Laurentian native terranes, (2) internal continental terranes of the Appalachian orogen, (3) disrupted terranes, (4) possible oceanic crustal remnants, (5) volcanic-arc terranes, (6) a continental terrane of Gondwanaland affinity, and (7)...

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