ИСТИНА

New data on the salinity degree of the main geological-genetic complexes of Quaternary deposits of the Yenisei North is presented. The thickness of Quaternary deposits varies from a few meters in the mountains and foothills of the Taymyr Peninsula to over 100 m to the south of Cape Sopochnaya Karga (the right bank of the Yenisei River). To the north of Ust-Port Village (68o N), Quaternary sandy-clayey deposits of marine genesis are saline. The salinization is connected with the conservation of sodium chloride sedimentary salts in frozen marine deposits during the Pleistocene and the Holocene. Pleistocene marine deposits, thawed and then frozen again, mainly have sodium sulfate composition of salts. Saline marine deposits are overlain by non-saline ones: slope, aeolian, fluvial, lacustrine, biogenic and ice complex deposits. A map of the distribution of cryogenic saline Quaternary deposits of the Yenisei North (scale 1:1,000,000) to the depth of 15-20 m was created.