δ18O and δD variations in Holocene massive ice in the Sabettayakha river mouth, northern Yamal Peninsula

被引：0
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作者：
Yu. K. Vasil’chuk
Ye. Ye. Podborny
N. A. Budantseva
A. C. Vasil’chuk
A. N. Sullina
Ju. N. Chizhova
机构：
[1] Moscow State University,
[2] ООО Center for Hydroecological Studies,undefined
来源：
Doklady Earth Sciences | 2016年 / 470卷
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摘要：
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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页码：1086 / 1092
页数：6
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