[Retracted] Initiation of Triangle Zones by Delamination, Shear, and Compaction at the Front of Fold-and-Thrust Belts

Figure 13

The general strength domain for a frictional, cohesive, compactant, and dilatant material is characterized by the friction angle , the compaction angle , the cohesion , the tensile strength , and the maximum compressive strength (a). The support function is defined in terms of the orientation of the velocity jump vector , the angle measured anticlockwise from the normal to the interface. The values of are defined in (13) for the six orientation cases presented in (b).

(a)

(b)