The late Pleistocene in the central part of the North Siberian Lowland

Abstract Extensive fieldwork and analytical work (including 352 radiocarbon dates) have added greatly to our knowledge of the Quaternary of the North Siberian Lowland. The oldest deposits are those (probably mid‐Pleistocene in age) forming the three ridge‐like uplands in the Lowland. Marine deposits overlying the slopes of these ridges and the intervening depressions are widespread but cannot be dated positively since all radiocarbon dates are minimum dates, but they probably date to Kazantsev time, i.e., to 125,000–80,000 years B.P. approximately. A subsequent marine regression led to a great deal of rejuvenation and erosion; no deposits from this time were found. Considerable thicknesses of interglacial Kargin deposits (47,000–25,000 years B.P.) are found in the lake basins and river valleys. During the Sartan Glaciation the associated marine regression led to further rejuvenation and erosion. No traces of glaciation from this time were found in the central part of the North Siberian Lowland.