Deep Structure and Tectonic Zonation of the Consolidated Crust of Russian Arctic

Egorov, A.S.

doi:10.3997/2214-4609.201800189

Cited by 3 publications

(2 citation statements)

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“…Independently, the presence of a strike-slip fault zone was suggested by Egorov A.S. and Antonchik V.I. based on comprehensive studies of the deep structure of the Earth's crust [23,41,42]. Later, the strike-slip fault zone stretching from the Pai-Khoi-Novozemelsk fold area to the Altai-Sayan fold area was studied by various authors [16,40], and it was given various names, such as the "Trans-Eurasian fault" or "Trans-Eurasian left-lateral fault" [43], the "Main strike-slip zone of Western Siberia" [40], "left-lateral fault system" [18] and others.…”

Section: Characteristics Of the Regional Pai-khoi-altai Strike-slip S...mentioning

confidence: 99%

Impact of the Regional Pai-Khoi-Altai Strike-Slip Zone on the Localization of Hydrocarbon Fields in Pre-Jurassic Units of West Siberia

Egorov,

Antonchik,

Senchina

et al. 2023

Minerals

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The paper presents the results of a geological interpretation using gravity, magnetic, and seismic data to understand the oil and gas potential of pre-Jurassic sedimentary intervals and basement in the central West Siberia basin. The 200 km long Pai-Khoi-Altai strike-slip zone was investigated. Reconstruction based on a data complex indicate the right-lateral kinematics of the principal strike-slip faults and possible fault inversion. The study evaluated the spatial and genetic relationship between the conditions for hydrocarbon trap development and the strike-slip fault systems, such as “flower structures”. Strike-slip geometry and kinematics are confirmed based on 2D and 3D seismic data. Geological and geophysical criteria are used to forecast localization of hydrocarbon fields. Predictive zones are elongated in several different directions and have a different distribution pattern in the blocks separated by principal strike-slip faults, confirming its significance as a controlling factor for the hydrocarbon potential of the region’s structures.

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Section: Characteristics Of the Regional Pai-khoi-altai Strike-slip S...mentioning

confidence: 99%

Impact of the Regional Pai-Khoi-Altai Strike-Slip Zone on the Localization of Hydrocarbon Fields in Pre-Jurassic Units of West Siberia

Egorov,

Antonchik,

Senchina

et al. 2023

Minerals

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“…The key construction tool in this methodology is a zonal-block model of the lithosphere [8] based on the results of specialized processing and comprehensive interpretation of seismic (DSS and CDP), gravimetric, magnetic, geoelectric, and geothermal data. It reflects blocks and inter-block zones separating them.…”

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confidence: 99%

Deep Structure, Tectonics and Petroleum Potential of the Western Sector of the Russian Arctic

Egorov

Prischepa

Nefedov

et al. 2021

JMSE

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The evolutionary-genetic method, whereby modern sedimentary basins are interpreted as end-products of a long geological evolution of a system of conjugate palaeo-basins, enables the assessment of the petroleum potential of the Western sector of the Russian Arctic. Modern basins in this region contain relics of palaeo-basins of a certain tectonotype formed in varying geodynamic regimes. Petroleum potential estimates of the Western Arctic vary broadly—from 34.7 to more than 100 billion tons of oil equivalent with the share of liquid hydrocarbons from 5.3 to 13.4 billion tons of oil equivalent. At each stage of the development of palaeo-basins, favourable geological, geochemical and thermobaric conditions have emerged and determined the processes of oil and gas formation, migration, accumulation, and subsequent redistribution between different complexes. The most recent stage of basin formation is of crucial importance for the modern distribution of hydrocarbon accumulations. The primary evolutionary-genetic sequence associated with the oil and gas formation regime of a certain type is crucial for the assessment of petroleum potential. Tectonic schemes of individual crustal layers of the Western sector of the Russian Arctic have been compiled based on the interpretation of several seismic data sets. These schemes are accompanied by cross-sections of the Earth’s crust alongside reference geophysical profiles (geo-traverses). A tectonic scheme of the consolidated basement shows the location and nature of tectonic boundaries of cratons and platform plates with Grenvillian basement as well as Baikalian, Caledonian, Hercynian, and Early Cimmerian fold areas. Four groups of sedimentary basins are distinguished on the tectonic scheme of the platform cover according to the age of its formation: (1) Riphean-Mesozoic on the Early Precambrian basement; (2) Paleozoic-Cenozoic on the Baikalian and Grenvillian basements; (3) Late Paleozoic-Cenozoic on the Caledonian basement; (4) Mesozoic-Cenozoic, overlying a consolidated basement of different ages. Fragments of reference sections along geo-traverses illustrate features of the deep structure of the main geo-structures of the Arctic shelf and continental regions of polar Russia.

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Impact of the Pai-Khoi-Altai Regional Strike-Slip Zone on Localization of Hydrocarbon Fields in the Pre-Jurassic Basement of the Central Part of West Siberian Oil and Gas Province

Egorov,

Antonchik,

Senchina

et al. 2023

Preprint

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The paper presents the results of geological interpretation of the set of geophysical data with substantiation of geological-geophysical and structural geological criteria of oil and gas potential of the sedimentary cover deep levels and the upper part of the consolidated basement in the central West Siberian oil and gas basin. Gravity, magnetic and seismic data are used. The character of manifestation of the regional Pai-Khoi–Altai strike-slip zone covering an area up to 200 km wide is shown. The study provides a basis for assuming a spatial genetic relationship between the conditions for localizing hydrocarbon traps and the extensional and strike-slip and thrust structures of the zone that form so-called "flower structures". The substantiated structural geological criteria were applied to solve the problem of pattern recognition with training, highlighting the environments favourable for localization of hydrocarbon fields.

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Deep Structure and Tectonic Zonation of the Consolidated Crust of Russian Arctic

Cited by 3 publications

References 0 publications

Impact of the Regional Pai-Khoi-Altai Strike-Slip Zone on the Localization of Hydrocarbon Fields in Pre-Jurassic Units of West Siberia

Impact of the Regional Pai-Khoi-Altai Strike-Slip Zone on the Localization of Hydrocarbon Fields in Pre-Jurassic Units of West Siberia

Deep Structure, Tectonics and Petroleum Potential of the Western Sector of the Russian Arctic

Impact of the Pai-Khoi-Altai Regional Strike-Slip Zone on Localization of Hydrocarbon Fields in the Pre-Jurassic Basement of the Central Part of West Siberian Oil and Gas Province

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