Two different models have been presented to describe the geometry of the Woodstock fault near Summerville, South Carolina. The fault bend model of Marple and Miller (2006) postulated that much of the seismicity southeast of Summerville is associated with a 12° restraining bend in the Woodstock fault and nearby secondary faults, such as the Ashley River fault (Figure 1A). The second model depicts the Woodstock fault as having a 3–6-km-wide, left-step offset southeast of Summerville (Garner 1998; Talwani 1999; Gangopadhyay and Talwani 2003, 2005; Talwani and Durá-Gómez 2009) (Figure...

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