Figure 14--Schematic synoptic model for progradational delta loading and inversion of progradational delta system. (a) Progradational delta system showing the development of differential load-driven delta-top extensional graben systems and delta-toe contractional fault/fold systems. (b) Inverted delta system showing reactivation and inversion of the delta-top extensional fault systems to produce fault-related anticlines and amplification of the delta-toe fold-thrust belt.