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Where did Late Triassic fault-bounded basins form along the Appalachian region?
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Triassic Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the early Triassic Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
During the Late Triassic, the onset of continental rifting caused crustal stretching along the Appalachian Mountain belt in eastern North America. This tectonic activity resulted in normal faulting that created grabens, or fault-bounded basins, stretching from the Carolinas to Nova Scotia. These basins subsequently received thick sequences of clastic sediments eroded from the nearby Appalachian highlands.1