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

Figure 8

Two décollements are activated and could terminate with a thrusting to the free surface, (a). Mixed collapse mechanism number 7 includes a transition from the lower to the upper décollement and terminates with thrusting at the front (b).

(a)

(b)