Permafrost and ground ice of the Arctic, Antarctic and mountain regions
Vasil'chuk Y.K. —
Syngenetic and cyclical yedoma strata of Northern Yakutia
// Arctic and Antarctica.
– 2020. – ¹ 2.
– P. 34 - 64.
DOI: 10.7256/2453-8922.2020.2.32917 URL: https://en. nbpublish.com/library_read_article.php?id=32917
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This article demonstrates the evolution of representation on syngenetic formation of frozen strata set by Lopatin, Abolin, Leffingwell and Nekipelov. It is underlined that the theory of syngenesis is substantiated by the works of Gallwitz, Popov and Katasonov. It is mentioned that Dostovalov proposed a method for approximate determination of the age of ice-wedge ice and calculated that 3m wide ice wedges in the vicinity of Abalakh Lake are older than 2160 years, and 30-40 m high ice wedges in the Novosibirsk islands are older than 12,000 years according to Dostovalov’s calculations. The subject of the detailed study is the meso- and macro- cycles in the structure of yedoma strata in Northern Yakutia. Mesocycles in the yedoma strata of the Zelyony Mys, Stanchikovsky Yar, and Batagay have been examined, along with macrocycles of the Batagay yedoma. The mesocyclicity of the cryolithogenic strata is analyzed in the following cross sections: in Bolshoy Lyakhovsky Island, yedoma in the Belyanka River valley, in the outcrop Soplivaya Gora in the Yana River valley, in the valley of the Vilyuy River downstream of Verkhnevilyuysk, etc. The duration of the mesocycles formation in the yedoma strata of the Northern Yakutia is established: a. One subaquatic-subaerial mesocycle in the Zelyony Mys yedoma consisting of a subaquatic sandy loam and a subaerial peaty horizon of 4 m thick accumulated over the period 3,000years. b. One subaquatic-subaerial mesocycle in the Stanchikovsky Yar yedoma 5 m thick accumulated over the period of 3,300 years. c. One mesocycle in the section Soplivaya Gora, in the Yana River valley with a capacity of 3 m formed for about 3.000 years. Three macrocycles are identified in the Batagay section, with capacity of 7, 10 and 40 m; the time of formation of each macrocycle varied from 15-20 to 40 thousand years or more.
Zelyony Mys, Big Lyakhovsky Island, yedoma, permafrost, ice wedge, macrocycles, mesocycles, microcycles, Batagay, Stanchikovsky Yar
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