New data on Upper Carboniferous - Lower Permian deposits of Bol’shevik Island, Severnaya Zemlya Archipelago

We present here a detailed study of the Upper Carboniferous–Lower Permian stratigraphy of Bol’shevik Island in the Severnaya Zemlya Archipelago, consisting of the analysis of sedimentary structures and lithostratigraphy, U/Pb detrital zircon dating and structural studies. The preserved sedimentary s...

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Bibliographic Details
Published in:Polar Research
Main Authors: Ershova, Victoria B., Prokopiev, Andrei V., Nikishin, Valery A., Khudoley, Andrey K., Malyshev, Nikolay A., Nikishin, Anatoly M.
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 2015
Subjects:
Severnaya Zemlya Archipelago
Arctic
detrital zircon
Late Palaeozoic
tectonic
Severnaya Zemlya
Polar Research
Online Access:https://polarresearch.net/index.php/polar/article/view/3237
https://doi.org/10.3402/polar.v34.24558
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Summary:We present here a detailed study of the Upper Carboniferous–Lower Permian stratigraphy of Bol’shevik Island in the Severnaya Zemlya Archipelago, consisting of the analysis of sedimentary structures and lithostratigraphy, U/Pb detrital zircon dating and structural studies. The preserved sedimentary structures suggest that the studied strata were deposited in a relatively small meandering fluvial system. U/Pb dating of detrital zircons reveals that the Upper Carboniferous–Lower Permian sandstones contain a primary age population ranging from 450 to 570 millions of years, with a predominance of Early–Middle Ordovician zircons. This detrital zircon distribution indicates that the studied formations were derived locally from the erosion of Lower Ordovician deposits of Bol’shevik Island or elsewhere in the archipelago. Our structural studies suggest that Upper Carboniferous–Lower Permian deposits are deformed into a series of west–north-west verging open asymmetric folds, suggesting a west–north-west direction of tectonic transport and that deformation across the island is post-Early Permian in age.Keywords: Severnaya Zemlya Archipelago; Arctic; detrital zircon; Late Palaeozoic; tectonic.Citation: Polar Research 2015, 34, 24558, http://dx.doi.org/10.3402/polar.v34.24558(Published: 7 May 2015)To access the supplementary material for this article, please see supplementary files in the column to the right (under Article Tools).

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