Paleogeomorphological Analysis of the Oligocene–Neogene Sediments in the North-Eastern Part of the Black Sea

Abstract—The evolution of the deep-water sedimentation system in the northeastern part of the Black Sea during the Oligocene–Pliocene has been considered mainly on the basis of the seismic data. The formation time of fans and erosion canyons is presumably related to the regressive–transgressive stages in the history of the Eastern Paratethys. The source areas of detrital sediments in the Tuapse trough have been identified. The sedimentation model of the Tuapse trough and the changes in the trough morphology since the Oligocene have been reconstructed based on analysis of the thickness maps and the onlap surfaces on the northern side of the Shatsky Ridge. Paleogeographic maps have been compiled for the Late Oligocene–Early Miocene (Maykop Suite), Middle Miocene, and Pliocene.