Sea level fluctuations and their signature in the composition and structure of polygonal wedge ice in the Yenisei River lower reaches

Late Pleistocene and Holocene polygonal-wedge ice is studied in the lower course of the Yenisei River. Ice distribution, features of the formation, chemical and microbiological composition were determined. It was established that ice wedges were formed on the slopes of the depression, in coastal-mar...

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Bibliographic Details
Published in:Ice and Snow
Main Authors: O. L. Opokina, E. A. Slagoda, I. B. Tomberg, M. Yu. Suslova, A. D. Firsova, T. V. Khodzher, N. A. Zhuchenko
Format: Article in Journal/Newspaper
Language:Russian
Published: Nauka 2015
Subjects:
голоцен
карское море
полигонально-жильный лёд
регрессия
трансгрессия
химия и микробиология льда
Science
Q
Yenisei River
Thermokarst
Online Access:https://doi.org/10.15356/2076-6734-2014-2-82-90
https://doaj.org/article/ef014aa2586947ec8d60ff31d8cbf86b
Description
Summary:Late Pleistocene and Holocene polygonal-wedge ice is studied in the lower course of the Yenisei River. Ice distribution, features of the formation, chemical and microbiological composition were determined. It was established that ice wedges were formed on the slopes of the depression, in coastal-marine lagoons and in thermokarst during Holocene. The evidence of thermoabrasion and thermokarst in sediments as well as the marine signal in composition of polygonal-wedge ice allowed clarifying the southern limit of the Holocene transgression.

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