Multistage Holocene massive ice near the Sabettayakha River mouth, Yamal Peninsula

Авторы: Vasil’chuk Yu K., Budantseva N.A., Vasil’chuk A.C., Podborny Ye Ye, Sullina A.N., Chizhova Ju N.
Журнал: Earth's Cryosphere
Том: 4
Год издания: 2015
Издательство: Izdatel'stvo Sibirskogo Otdeleniia RAN
Местоположение издательства: Russian Federation
Первая страница: 36
Последняя страница: 47
Оригинальные версии: Голоценовые многоярусные пластовые льды в устье реки Сабеттаяха, полуостров Ямал
Аннотация: A unique case of Holocene massive ground ice on the Ob Gulf coast has been studied in detail for the fi rst time. Syngenetic permafrost in the area consists of frozen lagoonal and marine sediments. Massive ice bodies, up to 5.7 m thick, occur in the Holocene deposits of a modern lagoon-sea fl oodplain and the fi rst terrace and thus obviously have Holocene ages. Patterns of stable isotopes and pollen spectra evidence that the ice is mostly intrasedimental, formed syngenetically in the Late Holocene during freezing of water-saturated ground under intense cryogenic fractionation. Very low δD and δ18O values in the ice are exceptional for the Holocene ground ice of the Yamal Peninsula.
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