Fig. 10From: Preparation zones for large crustal earthquakes consequent on fault-valve actiona Development of wing-cracks at the tip of a steep reverse fault under horizontal compression within intact crust (cf. Willemse and Pollard 1998); b hypothetical development of an overpressured fluid reservoir near the base of the upper crustal seismogenic zone, in the dilatational quadrant associated with the termination of a steep reverse faultBack to article page