AbstractShallow seismic profiles are used to image the stratigraphic seHing in the southwestern Black Sea. Two unconformable main seismic units were detected in the sediments, which carry the effects of a major sea-level fall. The upper unit shows transgressive systems track deposits on an erosional unconfonnity. This marked surface extends ubiquitously all over the shelf, -100 to -110 ill below the present sea level,. and indicating the lowstand of sea level before the latest rise in the Black Sea (1O-9 ka BP). The lower unit consists of two different formations; locally folded-faulted acoustically reflective strata and stacked prograded delta successions The latter is divided into at least 4 distinct sub-units in a form of stacked delta successions deposited on the transgressed shelves of the Black Sea, which carry the effects of many minor short-lived sea¬level variations.