ИСТИНА

Muostakh Island (N 71°36’; E 129°57’) is a spectacular site in the Siberian Arctic due to its very high coastal erosion rates of up to 20 m/year as well as substantial permafrost subsidence. The island extends about 7.5 km in the N-S direction and up to 500m in E-W direction and has been connected to the mainland a few thousand years ago. Ice Complex form up to 20 m high coastal cliffs on Muostakh Island. In general, the sedimentary sequence from Muostakh Island is divided into three stratigraphic units and consists sediments of Late Pleistocene to Holocene age. Here, we present the complete sedimentological sequence of Muostakh Island including new Radiocarbon dates both from sediment and ground ice, sedimentological, geochemical and geocryological data including for the first time this coarse-grained layer. The data is used to draw the Late Quaternary depositional and palaeo-environmental history of this region.