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Massive ice is widespread on the territory of modern of Eurasian permafrost area: in the north of Western Siberia, Taimyr, Chukotka, and Arctic islands. Their thickness reaches 45-50m. The origin of massive ice is difficult to define due to the equifinality of such two different processes as intrasedimental freezing and formation of glacial ice. In both cases, thick massive ice is formed in various ways, but with the same final appearance. Three important aspects that show the evidence of the intrasedimental origin of massive ice in the north of Eurasia are examined. At first glance, they are obvious, but still fell out of sight of paleogeocryologists. It is shown that: 1) Any currently existing Late Pleistocene glacier, or part of it located under Holocene ice, have not yet been found within the Eurasian Arctic or on the Arctic islands with ice sheets, nor in the mountainous regions. 2) The isotopic composition of the vast majority of massive ice found in northern Eurasia is quite "Holocene", whereas in the north of Canada and Alaska, ice with a very light isotopic composition can often be found. 3) It should be taken into account that massive ice is found in the Holocene sediments of Western Siberia and Chukotka, where there is no reason to assume the glaciers spread to the plains.	

Some clear evidences of the intrasedimental origin of massive ice in northern Eurasia