Abstract
The conditions of formation of massive ice near the South Tambey gas-condensate field in northern Yamal Peninsula are studied. It is shown that massive ice bodies up to 4.5 m thick occur in the Holocene deposits of the high laida and the first terrace. Therefore, they cannot be the remains of glaciers; they are ground ice formations. All three types of massive ice have quite various isotopic compositions: the values of δD range from–107 to–199.7, and δ18O from–15.7 to–26.48‰. Such a significant differentiation in isotopic composition is a result of cryogenic fractionation in a freezing water-saturated sediment. The most negative isotope values are even lower in this Holocene massive ice than in the Late Pleistocene ice-wedge ice of Yamal Peninsula.
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Original Russian Text © Yu.K. Vasil’chuk, Ye.Ye. Podborny, N.A. Budantseva, A.C. Vasil’chuk, A.N. Sullina, Ju.N. Chizhova, 2016, published in Doklady Akademii Nauk, 2016, Vol. 470, No. 5, pp. 585–591.
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Vasil’chuk, Y.K., Podborny, Y.Y., Budantseva, N.A. et al. δ18O and δD variations in Holocene massive ice in the Sabettayakha river mouth, northern Yamal Peninsula. Dokl. Earth Sc. 470, 1086–1092 (2016). https://doi.org/10.1134/S1028334X16100172
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DOI: https://doi.org/10.1134/S1028334X16100172