TY - JOUR

T1 - Seismogeologic, structural, and tectonic characteristics of the continental margin of the Siberian platform (Khatanga–Lena interfluve)

AU - Kontorovich, V. A.

AU - Kontorovich, A. E.

AU - Kalinin, A. Yu

AU - Kalinina, L. M.

AU - Lapkovskii, V. V.

AU - Lunev, B. L.

AU - Moiseev, S. A.

AU - Solovev, M. V.

N1 - Funding Information: This work was carried out as part of the IPGG SB RAS fundamental research program (Project No. 0331-2019-0020) with financial support from the RFBR – Arctic Resources, project 18-05-70105. Publisher Copyright: © 2021, Novosibirsk State University.

PY - 2021/8

Y1 - 2021/8

N2 - The paper considers the seismogeologic, structural, and tectonic features of Neoproterozoic–Paleozoic and Mesozoic sedimentary complexes in the Arctic regions of the Siberian Platform. Based on the results of deep drilling, the geologic structure of the study area was analyzed, and the key sections of Neoproterozoic–Paleozoic deposits of the Anabar–Khatanga and Lena–Anabar oil and gas areas (OGA) were compiled. Analysis of geological and geophysical materials showed the existence of a sedimentary basin up to 14–16 km in thickness on the continental margin of the Siberian Platform, with five regional seismogeologic megacomplexes in its section: Riphean, Vendian, lower–middle Paleozoic, Permian, and Mesozoic. Based on the results of a complex interpretation of CDP seismic-survey and deep-drilling data, a structural and tectonic analysis was performed, structural maps were compiled for all reference stratigraphic levels, and a conclusion has been drawn about the similarity of the structural plans of the Riphean top and overlying sedimentary complexes. Using a structural map along the Permian top, a tectonic map of the study area was compiled, which corresponds to the current state of study. The results of numerical modeling of the salt diapir formation processes are presented, and the types of anticlinal structures, potential oil-and gas-promising objects, are considered.

AB - The paper considers the seismogeologic, structural, and tectonic features of Neoproterozoic–Paleozoic and Mesozoic sedimentary complexes in the Arctic regions of the Siberian Platform. Based on the results of deep drilling, the geologic structure of the study area was analyzed, and the key sections of Neoproterozoic–Paleozoic deposits of the Anabar–Khatanga and Lena–Anabar oil and gas areas (OGA) were compiled. Analysis of geological and geophysical materials showed the existence of a sedimentary basin up to 14–16 km in thickness on the continental margin of the Siberian Platform, with five regional seismogeologic megacomplexes in its section: Riphean, Vendian, lower–middle Paleozoic, Permian, and Mesozoic. Based on the results of a complex interpretation of CDP seismic-survey and deep-drilling data, a structural and tectonic analysis was performed, structural maps were compiled for all reference stratigraphic levels, and a conclusion has been drawn about the similarity of the structural plans of the Riphean top and overlying sedimentary complexes. Using a structural map along the Permian top, a tectonic map of the study area was compiled, which corresponds to the current state of study. The results of numerical modeling of the salt diapir formation processes are presented, and the types of anticlinal structures, potential oil-and gas-promising objects, are considered.

KW - Anabar– Khatanga OGA

KW - Diapir

KW - Lena–Anabar OGA

KW - Salt dome

KW - Sedimentary basin

KW - Seismic horizon

KW - Seismogeologic complex

KW - Siberian Platform

KW - Structural map

KW - Tectonics

KW - Uplift

UR - http://www.scopus.com/inward/record.url?scp=85115243554&partnerID=8YFLogxK

U2 - 10.2113/RGG20214352

DO - 10.2113/RGG20214352

M3 - Article

AN - SCOPUS:85115243554

VL - 62

SP - 947

EP - 963

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 8

ER -