Geodynamics and Oil and Gas Potential of the Yenisei-Khatanga Basin (Polar Siberia)

Vernikovsky, V. A.; Шемин, Г Г; Деев, Е. В.; Метелкин, Д. В.; Matushkin, N. Yu.; Pervukhina, N. V.

doi:10.3390/min8110510

Cited by 20 publications

(14 citation statements)

References 45 publications

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“…In Taimyr, Permian coal bearing terrestrial sediments correlative with those in the Tunguska Basin, as well as early Paleozoic and older 49–54 sedimentary rocks (shales, limestones, marls) are present. These probably have high organic carbon contents comparable to what has been documented from the Tunguska Basin 55 .…”

Section: Discussionmentioning

confidence: 98%

The main pulse of the Siberian Traps expanded in size and composition

Augland

Ryabov

Vernikovsky

et al. 2019

Sci Rep

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Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. Taimyr and West Siberia, have since long been correlated, but existing geochronological data cannot resolve at a precision better than ~5 m.y. whether (sub)volcanic activity in these areas actually occurred during the main pulse or later. We report the first high precision U-Pb zircon geochronology from two alkaline ultramafic-felsic layered intrusive complexes from Taimyr, showing synchronicity between these and the main Siberian Traps (sub)volcanic pulse, and the presence of a second Dinerian-Smithian pulse. This is the first documentation of felsic intrusive magmatism occurring during the main pulse, testifying to the Siberian Trap’s compositional diversity. Furthermore, the intrusions cut basal basalts of the Taimyr lava stratigraphy hence providing a minimum age of these basalts of 251.64 ± 0.11 Ma. Synchronicity of (sub)volcanic activity between Taimyr and the Siberian Traps imply that the total area of the Siberian Traps main pulse should include a ~300 000 km2 area north of Norilsk. The vast aerial extent of the (sub)volcanic activity during the Siberian Traps main pulse may explain the severe environmental consequences.

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Section: Discussionmentioning

confidence: 98%

The main pulse of the Siberian Traps expanded in size and composition

Augland

Ryabov

Vernikovsky

et al. 2019

Sci Rep

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“…The area between the two lineaments is occupied by Late Paleozoic and Mesozoic, predominantly clastic sedimentary rocks of the Yenisey-Khatanga Basin ( 8 ). The region is underlain by continuous permafrost about 700 m thick in the Yenisey-Khatanga Basin ( 9 ).…”

Section: Resultsmentioning

confidence: 99%

“…Ice-bonded permafrost is virtually impermeable for gases, leading to permafrost-capped gas reservoirs ( 9 ). In the hydrate stability zone, comprising the lower part of the permafrost and several 100 m below, methane and water form gas hydrate.…”

Section: Discussionmentioning

confidence: 99%

Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave

Froitzheim

Majka

Zastrozhnov

2021

Proc. Natl. Acad. Sci. U.S.A.

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Anthropogenic global warming may be accelerated by a positive feedback from the mobilization of methane from thawing Arctic permafrost. There are large uncertainties about the size of carbon stocks and the magnitude of possible methane emissions. Methane cannot only be produced from the microbial decay of organic matter within the thawing permafrost soils (microbial methane) but can also come from natural gas (thermogenic methane) trapped under or within the permafrost layer and released when it thaws. In the Taymyr Peninsula and surroundings in North Siberia, the area of the worldwide largest positive surface temperature anomaly for 2020, atmospheric methane concentrations have increased considerably during and after the 2020 heat wave. Two elongated areas of increased atmospheric methane concentration that appeared during summer coincide with two stripes of Paleozoic carbonates exposed at the southern and northern borders of the Yenisey-Khatanga Basin, a hydrocarbon-bearing sedimentary basin between the Siberian Craton to the south and the Taymyr Fold Belt to the north. Over the carbonates, soils are thin to nonexistent and wetlands are scarce. The maxima are thus unlikely to be caused by microbial methane from soils or wetlands. We suggest that gas hydrates in fractures and pockets of the carbonate rocks in the permafrost zone became unstable due to warming from the surface. This process may add unknown quantities of methane to the atmosphere in the near future.

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“…Временные сейсмогеологические разрезы по профилям Reg_1_АХС и Reg_2_АХС (индексы в белых овалахгеологический возраст, в желтых овалах -индексы отражающих горизонтов). рассмотрены в работах [Drachev et al, 2018;Vernikovsky et al, 2018]. Крупные события эволюции земной коры определяли общую геодинамическую обстановку.…”

Section: характеристика объекта исследованийunclassified

Geological and Geophysical Characteristics of the Anabar‐khatanga Oil and Gas Province; Numerical Modeling of the Processes of Formation of Salt Domes (Siberian Sector of the Russian Arctics)

Kontorovich

Лунёв

Лапковский

2019

Geodin. tektonofiz.

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The article discusses the geological structure, oil-and-gas-bearing capacities and salt tectogenesis of the Anabar-Khatanga saddle located on the Laptev Sea shore. In the study area, the platform sediments are represented by the 14-45 km thick Neoproterozoic-Mesozoic sedimentary complexes. The regional cross-sections show the early and middle Devonian salt-bearing strata and associated salt domes in the sedimentary cover, which may be indicative of potential hydrocarbon-containing structures. Diapirs reaching the ground surface can be associated with structures capable of trapping hydrocarbons, and typical anticline structures can occur above the domes buried beneath the sediments. In our study, we used the algorithms and software packages developed by A.A. Trofimuk Institute of Petroleum Geology and Geophysics (IPGG SB RAS). Taking into account the structural geological features of the study area, we conducted numerical simulation of the formation of salt dome structures. According to the numerical models, contrasting domes that reached the ground surface began to form in the early Permian and developed most intensely in the Mesozoic, and the buried diapirs developed mainly in the late Cretaceous and Cenozoic.

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Geodynamics and Oil and Gas Potential of the Yenisei-Khatanga Basin (Polar Siberia)

Cited by 20 publications

References 45 publications

The main pulse of the Siberian Traps expanded in size and composition

The main pulse of the Siberian Traps expanded in size and composition

Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave

Geological and Geophysical Characteristics of the Anabar‐khatanga Oil and Gas Province; Numerical Modeling of the Processes of Formation of Salt Domes (Siberian Sector of the Russian Arctics)

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