Finding Faults in the charleston area, south carolina: 2 ...

Finding Faults in the Charleston Area, South

Carolina: 2. Complementary Data

Pradeep Talwani and Inmaculada Dur?-G?mez

Pradeep Talwani and Inmaculada Dur?-G?mez

Department of Geological Sciences, University of South Carolina

ABSTRACT

The seismotectonic framework associated with the Middleton Place?Summerville seismic zone (MPSSZ) inferred from seismicity data consists of the ~50-km-long, ~N30?E-striking, NW-dipping, Woodstock fault associated with right-lateral oblique strike-slip motion, with a ~6-km-long antidilatational left step near Middleton Place, dividing it into the Woodstock north and south faults. Three ~NW-SE striking reverse faults, two NE dipping and one SW dipping, were recognized within this step. The Woodstock (N) fault lies along the southeast boundary of a buried Triassic basin, and the current seismicity is due to its reactivation. A comparison of this seismotectonic framework using a Geographic Information System shows that it is consistent with available geomorphological, geodetic, shallow stratigraphic ( ................
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