No.3(43),2025 PP.92-111

Neftyanaya provintsiya No. 3(43), 2025

Evidence of pulsed sedimentation during the Late Cretaceous in the northern part of the West Siberian Plate

A.I. Kudamanov, T.M. Karikh, A.M. Moshkov
DOI: https://doi.org/10.25689/NP.2025.3.92-111

Abstract

The Upper Cretaceous gas-bearing deposits of the West Siberian Plate, which are predominantly pelitomorphic and cover an area exceeding 2 million km², exhibit a cyclic structure comprising up to 10 cycles of sedimentation, each with a duration of 3-3.5 million years. Based on the results of areal studies above the Cenomanian stage, four horizons or seismic sequences have been identified, including the Turonian-Lower Coniacian (Kuznetsovsky), Coniacian-Santonian (Nizhneberezovsky), Campanian (Verkhneberezovsky), and Maastrichtian (Gankinsky). Based on core data and well log data, smaller stratigraphic units have been identified within these seismic sequences. One-dimensional isopach maps have been generated for seismic sequences and individual stratigraphic units. Using a local area (35×50 km²) with a code name "Severny" (Northern) located in the northern part of Western Siberia as an example, the effect of low-amplitude tectonics on sedimentation of individual stratigraphic units has been analyzed. The isopach map analysis has shown some evidence of predominant transgressive or regressive development of the local area. These features are most distinctly expressed within a zone of en echelon faults feathering a deep-seated fault. The transgressive-regressive cyclicity of the Upper Cretaceous sequence in Western Siberia reflects the pulsating nature of low-amplitude tectonic movements during the global Late Cretaceous transgression.

Key words:

Upper Cretaceous deposits in Western Siberia, stratigraphic units, earth silicon, smectites, en echelon faults, transgression, regression

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Authors

A.I. Kudamanov, PhD, expert, Tyumen Petroleum Research Center LLC
19, Perekopskaya Str., Tyumen, 625000, Russian Federation
E-mail: aikudamanov@tnnc.rosneft.ru

T.M. Karikh, Chief Specialist, Tyumen Petroleum Research Center LLC
42, M. Gorky Str., Tyumen, 625000, Russian Federation
E-mail: tmkarikh@tnnc.rosneft.ru

A.M. Moshkov, Specialist, Tyumen Petroleum Research Center LLC
19, Perekopskaya Str., Tyumen, 625000, Russian Federation
E-mail: ammoshkov2@tnnc.rosneft.ru

For citation:

A.I. Kudamanov, T.M. Karikh, A.M. Moshkov Sledy pul'satsiy pozdnemelovogo osadkonakopleniya v severnoy chasti Zapadno-Sibirskoy plity [Evidence of pulsed sedimentation during the Late Cretaceous in the northern part of the West Siberian Plate]. Neftyanaya Provintsiya, No. 3(43), 2025. pp. 92-111. DOI https://doi.org/10.25689/NP.2025.3.92-111. EDN ULPGIZ (in Russian)

© Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2025 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)

Evidence of pulsed sedimentation during the Late Cretaceous in the northern part of the West Siberian Plate A.I. Kudamanov, T.M. Karikh, A.M. Moshkov DOI: https://doi.org/10.25689/NP.2025.3.92-111

Key words: Upper Cretaceous deposits in Western Siberia, stratigraphic units, earth silicon, smectites, en echelon faults, transgression, regression

Evidence of pulsed sedimentation during the Late Cretaceous in the northern part of the West Siberian Plate

A.I. Kudamanov, T.M. Karikh, A.M. Moshkov
DOI: https://doi.org/10.25689/NP.2025.3.92-111

Key words:

Upper Cretaceous deposits in Western Siberia, stratigraphic units, earth silicon, smectites, en echelon faults, transgression, regression