Regional Paleogene Stratigraphic Scheme of Kaliningrad Oblast: State of the Art, Problems and Perspectives for Improvement

Abstract

The article discusses the current state of knowledge of the Paleogene stratigraphy of the Kaliningrad Oblast, discusses the age of local stratigraphic units and the volume of possible breaks in sedimentation, and sets trends for future regional studies of the Paleogene. The Paleocene Chistoozerskaya and Lubava formations both probably correspond to the Danian–Selandian by the foraminifer data, but their relationship is not definitely clear. The Zaostrovskaya Formation is suggested to be corresponding to the upper Thanetian, but its paleontological characteristics are very poor. The Sambian Formation corresponds to the Ypresian by foraminifers, but its exact stratigraphical interval is still not clear enough. The Alka Formation is presumably dated by the late Lutetian–early Bartonian. An updated after dinocyst study age of the Prussian Formation denotes early–late Priabonian. The newly deined by dinocyst study age of the Palvé Formation falls to the latest Priabonian. The Kurshskaya Formation corresponds to the uppermost Eocene– Oligocene–?lower Miocene. The problem of the presence and duration of hiatuses between formations remains relevant.