The Pleistocene ice-dammed lakes in the Vychegda River valley

Based on lithostratigraphic studies of sections and borehole cores, 14C and OSL dating, it is shown that alluvial and aeolian sedimentation took place in the middle and lower Vychegda valley throughout the Late Pleistocene, and the valley was not occupied by either glacier or proglacial lakes. The MIS 2 proglacial lake was locally distributed in the Northern Dvina valley. Reversal runoff through the Vychegda-Kama watershed could occur only at the end of MIS 6, when the middle and lower Vychegda was covered by ice sheet and a proglacial lake existed in the Keltma spillway crossing the watershed.