Figure 18: The depositional model for high-frequency sequences. A, correspondences between the distal and proximal type-sequences (CAS, continental aggradation surface; FRW, forced regressive wedge). B, a more realistic illustration of the forced regressive wedge, in which the irregular stepped forced regressions may create all the H-F sequences (1 to 8) seen in outcrops along the transect. Explanations in the text.