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

Figure 2

The bulk material is frictional, cohesive, and compactant. Its compressive strength is set by the maximum compressive strength and the compaction angle (a). The décollement is frictional and dilatant with a maximum tensile strength (b). The two strength domains are presented in the half plane , these two stresses being defined in (c).

(a)

(b)

(c)