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

Figure 6

Comparison of the bounds for collapse mechanisms for thrusting (CM 2), solid line, for delamination with a straight fault (CM 3), dashed curves, and delamination with a curved ramp (CM 4). The wedge length is and the softening for the delamination mechanisms is such that the fault has the properties of the décollement instead of the bulk material.