TY - JOUR

T1 - The Triassic of New Siberian Islands Archipelago and Its Position in the Structure of Sedimentary Cover of the Laptev Sea Shelf

AU - Nikitenko, B. L.

AU - Devyatov, V. P.

AU - Konstantinov, A. G.

AU - Sobolev, E. S.

AU - Yadrenkin, A. V.

AU - Pestchevitskaya, E. B.

AU - Lebedeva, N. K.

AU - Goryacheva, A. A.

N1 - Funding Information: The authors are grateful to A.Yu. Egorov and B.N. Shury-gin for their constructive comments on the manuscript. The study was supported by the Russian Science Foundation (project No. 19-17-00091) and scientific and methodical support by the Found of Science Investigations (Nos. 0331-2019-00050 and 331-2019-004). Publisher Copyright: © 2022, Novosibirsk State University.

PY - 2022/4

Y1 - 2022/4

N2 - The geological study of the Mesozoic sections of the New Siberian Islands archipelago and Asian coastal sections of the Arctic Ocean plays a key role in tying the results of comprehensive studies with seismic data on the Laptev Sea shelf and the western part of the East Siberian Sea. Therefore, it is extremely important to improve the subdivision of the Triassic system of the New Siberian archipelago and to define the position of the system in the structure of the Laptev Sea shelf sedimentary basin. The results of our study were used to improve and refine the lithostratigraphic subdivision of the Triassic in the study area and to recognize a distinct interregional stratigraphic marker, i.e., the Czekanowski Formation (lower Olenekian). In terms of genetic, structural, and sedimentological features, the Triassic stra-ta were grouped into two Groups: the Reshetnikov Group (Induan–upper Ladinian) and the Svetlaya Group (Ladinian–Rhaetian), reflecting major stages of sedimentation. For the Triassic of the eastern Laptev Sea shelf and adjacent onshore areas, the facies zonation scheme has been developed and refined on a unified basis. Based on their structure, the Phanerozoic sections of the study area can be considered as a part of the intermediate structural stage of the Laptev Sea plate at the margins of the Siberian craton.

AB - The geological study of the Mesozoic sections of the New Siberian Islands archipelago and Asian coastal sections of the Arctic Ocean plays a key role in tying the results of comprehensive studies with seismic data on the Laptev Sea shelf and the western part of the East Siberian Sea. Therefore, it is extremely important to improve the subdivision of the Triassic system of the New Siberian archipelago and to define the position of the system in the structure of the Laptev Sea shelf sedimentary basin. The results of our study were used to improve and refine the lithostratigraphic subdivision of the Triassic in the study area and to recognize a distinct interregional stratigraphic marker, i.e., the Czekanowski Formation (lower Olenekian). In terms of genetic, structural, and sedimentological features, the Triassic stra-ta were grouped into two Groups: the Reshetnikov Group (Induan–upper Ladinian) and the Svetlaya Group (Ladinian–Rhaetian), reflecting major stages of sedimentation. For the Triassic of the eastern Laptev Sea shelf and adjacent onshore areas, the facies zonation scheme has been developed and refined on a unified basis. Based on their structure, the Phanerozoic sections of the study area can be considered as a part of the intermediate structural stage of the Laptev Sea plate at the margins of the Siberian craton.

KW - Arctic

KW - facies zonation

KW - Laptev Sea

KW - New Siberian Islands

KW - stratigraphy

KW - Triassic

UR - http://www.scopus.com/inward/record.url?scp=85140358268&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/6860b2a3-934b-33b3-93e4-b1c167374f18/

U2 - 10.2113/RGG20214421

DO - 10.2113/RGG20214421

M3 - Article

AN - SCOPUS:85140358268

VL - 63

SP - 383

EP - 397

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 4

ER -