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New Findings and Stratigraphic Distribution of Foraminifera from Permian–Triassic Boundary Deposits in the Southern Verkhoyansk Region

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dc.contributor.author Yadrenkin A.V.
dc.contributor.author Biakov A.S.
dc.contributor.author Kutygin R.V.
dc.contributor.author Kopylova A.V.
dc.date.accessioned 2021-02-25T20:47:05Z
dc.date.available 2021-02-25T20:47:05Z
dc.date.issued 2020
dc.identifier.issn 1819-7140
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/162396
dc.description.abstract © 2020, Pleiades Publishing, Ltd. Abstract: The first study results on foraminifera from the Permian–Triassic boundary deposits in the southern Verkhoyansk region (the lower part of the Nekuchan Formation, Suol section located in the basin of Setorym River, a tributary of the East Khandyga River) are presented. The studied foraminifera constitute a novel group for this section and have not been used in paleontological-stratigraphic studies. The foraminiferal assemblage is represented exclusively by ammodiscids (Ammodiscus, Glomospira, and Glomospirella genera), among which Ammodiscus septentrionalis Gerke dominates. The distribution of foraminifera in the Suol section is compared to the previously constructed carbon isotope curve, which reflects global environmental changes. Three intervals are identified in the stratigraphic distribution of foraminifera. In the lower interval, foraminifera are relatively numerous and diverse. In the middle interval, foraminifera are not detected; the maximum negative values of δ13Corg isotope is also recorded here. This interval obviously corresponds to the main extinction episode in the Tethyan basins. In the upper interval, a gradual restoration of the abundance and structure of the foraminiferal complex occurs. A comparative analysis of the distribution and dynamics of taxonomic reorganization of the foraminiferal assemblages from the Permian–Triassic deposits within the Suol section and the assemblages from the Tethyan and Boreal sections has been carried out; as a result of this analysis, the common features and regularities are established. Brief descriptions of four foraminiferal species and a plate with their images are given.
dc.relation.ispartofseries Russian Journal of Pacific Geology
dc.subject foraminifera
dc.subject Permian–Triassic boundary
dc.subject Russian Northeast
dc.subject southern Verkhoyansk region
dc.title New Findings and Stratigraphic Distribution of Foraminifera from Permian–Triassic Boundary Deposits in the Southern Verkhoyansk Region
dc.type Article
dc.relation.ispartofseries-issue 5
dc.relation.ispartofseries-volume 14
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 447
dc.source.id SCOPUS18197140-2020-14-5-SID85092329135


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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