Evidence for a buried fault system in the Coastal Plain of the Carolinas and Virginia--Implications for neotectonics in the southeastern United States

摘要

Geomorphic, geologic, and geophysical data suggest the presence of an 600-km-long, north-northeast–trending buried fault system in the Coastal Plain of the Carolinas and Virginia, herein named the East Coast fault system. The East Coast fault system is expressed by anomalous changes in fluvial geomorphology that locally coincide with one or more of the following features: linear aeromagnetic anomalies, buried faults interpreted from seismic reflection data, surface faults offsetting Pliocene–Pleistocene surficial units, locally brecciated phyllites and argillites, gently upwarped sediments, topographic highs, and seismicity near Summerville, South Carolina.