Figure 3
From: Ultra-thin clay layers facilitate seismic slip in carbonate faults

Results from friction experiments. (a) experimental setup: (left) the three different configurations of tested gouges and (right) the gouge holder. (b) Friction coefficient versus slip during experiments at subseismic (0.001 ms−1) slip rate. (c) Distance to the onset of dynamic weakening, D ow , versus clay content. Layered gouges are characterized by a D ow lower than those of mixed and calcite gouges, both in dry and in wet conditions. (d,e) Friction coefficient versus slip during experiments at seismic (1 ms−1) slip rate.