Figure 1. Depositional elements and significant surfaces in a shelf to shelf margin setting characterized by high sediment input and falling sea level. A. Reconstruction of late Pleistocene shelf to shelf margin Mississippi deltas showing depositional components and stratigraphic boundaries, modified from Morton and Suter, 1996, their Figure 4D. B. The dip section edge of the block in (A), showing the nomenclature of Morton and Suter (1996). C. Same stratigraphic units as (B) hut with additional designations for key surfaces. D. Strike view suggesting how a depocenter, as emphasized in the above diagrams, would contrast with the depoflank, where the sea level fall would yield a sequence boundary. Note the ambiguity of the age of the incised-valley sequence boundary relative to events in the depocenter. Abbreviations are FS, flooding surface; SB, sequence boundary; DLS, downlap surface.