Sequence Stratigraphy Analysis/Depositional History and Environment of Deposition and 3D Building Model of Cretaceous in the Southern Part of Romanian Black Sea Off-shore and Western Part of the Moesian Platform.

GAGEANU MAIA, PETROM - RA.

Integration sedimentological data and paleontological data with well log and seismic data have been used to provide a new conceptual depositional model for the Cretaceous (lithostratigraphy and depositional environment in the part of the Black Sea Basin).

Sedimentological descriptions and discussions of lithofacies geometry's and distributions will be keyed to some cross sections. The cross sections are a genetic stratigraphic summary derived from complete sedimentologic descriptions of facies, regional facies interpretations, depositional environments and basin-scale maps.

Sequence stratigraphic surfaces are designed as interpretations of the unconformity-bounded sequence.

Development of the southern part of the basin as a passive margin is closely related to considerations of the pre-drift position of continental platform during the Cretaceous time.

Cretaceous strata in the basin comprise a southern-thickening gross succession of sediments on which eustatic sea-level fluctuations and a sequence of unconformities related to pulses of transgressive and regressive depositional trends are superimposed. Recognition of these trends has provided the basis for classifications of the strata into parasequence representing distinct areas with regard to time stratigraphy, sedimentation, tectonics, depositional environments, and hydrocarbon potential. 

AAPG Search and Discovery Article #91021©1997 AAPG Annual Convention, Dallas, Texas.