Figure 7

SCCL, major flow zones, and the occurrence of aseismic fault slip. In the well GPK1 between 2,800 and 3,500 m. SCCL and the location of (aseismic) slips during GPK1 stimulation have been identified by Cornet et al. ([1997]) and Evans et al. ([2005a]). Major flow zones are surrounded by zones of high SCCL. Slip is restricted to hydrothermally altered clay zones with high SCCL. The occurrence of aseismic slips is restricted to clay-rich flowing faults.