DEEP-SEATED BOUNDARY STRUCTURES OF THE SIBERIAN CRATON AND THE BAIKAL-PATOM FOLD-AND-THRUST BELT IN THE CROSS-SECTION OF THE 1-SB-VOSTOCHNY PROFILE AND ITS CONTINUATION ALONG THE VITIM RIVER
https://doi.org/10.5800/GT-2025-16-5-0848
EDN: https://elibrary.ru/xhofly
Abstract
The deep-seated boundary structures of the Siberian craton and the Baikal-Patom fold-and-thrust belt have been considered in the cross-section of the 1-SB-Vostochny reference geophysical profile and its continuation along the Vitim River. The deep crustal CDP seismic reflection profiling, with regard to the distribution of potential fields, made it possible to construct a geodynamic model of the junction zone of the Siberian craton and the Baikal-Patom belt. The model highlights the Siberian craton basement structures, overlain in the marginal part by a complicated series of nappes including the Chuya allochthon, the Baikal-Patom pericratonic trough, and deformed complexes of the sedimentary cover of the craton. There has been the south-easterly increase in the cover thickness from 5 to 15 km, as well as the cover saturation with salts and gabbroid sills. The structures of the folded framing of the craton are represented by the Mama block, the complexes of which surround the wedge-shaped end of the basement of the Siberian craton, splitting from the mid-crustal level. The upper plates of the Mama block, with the 3–4 km thick Chuya allochthon at the base, are thrust over the craton, and the lower plates are thrust under the craton, sinking into the mantle. The southern boundary of the Siberian craton has been traced on the basis of geophysical data complex.
Keywords
Baikal-Patom belt,
southern boundary of the Siberian craton,
deep structure,
1-SB-Vostochny seismic profile
Supporting agencies: Not specified.
About the Authors
L. V. Kungurtsev
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Leonid V. Kungurtsev
3 Academician Koptyug Ave, Novosibirsk 630090
E. Yu. Goshko
Novosibirsk State Technical University
Russian Federation
Russian Federation
20-1 Karl Marx Ave, Novosibirsk 630073
M. M. Buslov
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
A. V. Liseykin
Seismological Branch of the Federal Research Center of the Geophysical Survey, Russian Academy of Sciences
Russian Federation
Russian Federation
3 Academician Koptyug Ave, Novosibirsk 630090
References
1. Budyak A.E., Skuzovatov S.Y., Tarasova Y.I., Wang K.-L., Goryachev N.A., 2019. Common Neoproterozoic – Early Paleozoic Evolution of Ore-Bearing Sedimentary Complexes in the Southern Siberian Craton. Doklady Earth Sciences 484 (1), 92–96. https://doi.org/10.1134/S1028334X19010227.
2. Chugaev A.V., Budyak A.E., Chernyshev I.V., Dubinina E.O., Gareev B.I., Shatagin K.N., Tarasova Yu.I., Goryachev N.A., Skuzovatov S.Yu., 2018. Isotopic (Sm-Nd, Pb-Pb and δ34S) and Geochemical Characteristics of the Metasedimentary Rocks of the Baikal-Patom Belt (Northern Transbaikalia) and Evolution of the Sedimentary Basin in the Neoproterozoic Time. Petrology 26 (3), 213–245. https://doi.org/10.1134/S0869591118030025.
3. Donskaya T.V., 2019. Early Proterozoic Granitoid Magmatism of the Siberian Craton. Brief PhD Thesis (Doctor of Geology and Mineralogy). IEC SB RAS, Irkutsk, 38 p. (in Russian)
4. Drugov G.M., Sizykh A.I., Cheremnykh V.A., 2011. Geology of Muscovite Pegmatites of the Mama Mica-Bearing Province. ISU Publishing House, Irkutsk, 253 p. (in Russian)
5. Fuis G.S., Murphy J.M., Lutter W.J., Moore T.E., Bird K.J., Christensen N.I., 1997. Deep Seismic Structure and Tectonics of Northern Alaska: Crustal-Scale Duplexing with Deformation Extending Into the Upper Mantle. Journal of Geophysical Research: Solid Earth 102 (B9), 20873–20896. https://doi.org/10.1029/96JB03959.
6. Glebovitsky V.A., Khil’tova V.Ya., Kozakov I.K., 2008. Tectonics of the Siberian Craton: Interpretation of Geological, Geophysical, Geochronological, and Isotopic Geochemical Data. Geotectonics 42 (1), 8–20. https://doi.org/10.1134/S0016852108010020.
7. Goryachev N.A., Budyak A.E., 2017. Conditions for the Formation of the Lena Gold-Bearing Area, Southern Siberia, Russia. In: SEG 2017 Conference. Ore Deposits of Asia: China and Beyond (September 17–20, 2017, Beijing, China). SEG, р. 135.
8. Goryunov N.A., Chetvergov A.P., 2006. Justification of New Directions of Development of Mineral Resource Base of Eastern Siberia Based on the 1-SB Reference Geophysical Profile (Stage II) Along the 600 km Long "R. Unikitkan – R. Nizhnyaya Tunguska – Vitim City" Route Within the Irkutsk Region and the Republic of Sakha (Yakutia). Geological Report. Eniseigeofizika, Krasnoyarsk, 216 p. (in Russian)
9. Khomentovskii V.V., Postnikov A.A., 2001. Neoproterozoic Evolution of the Baikal-Vilyui Branch of the Paleoasian Ocean. Geotectonics 35 (3), 149–164.
10. Kochnev A.P., Misurkeeva N.V., 2009. Geotectonic Position of Baikal-Patomsky Pegmatite Belt. Proceedings of the Siberian Department of the Section of Earth Sciences of the Russian Academy of Natural Sciences. Geology, Prospecting and Exploration of Ore Deposits 1 (34), 45–52 (in Russian)
11. Kungurtsev L.V., Goshko E.Y., 2023. Deep Structure and Formation Model of Continental Crust of the Verkhoyansk Fold-and-Thrust Belt in the Late Mesozoic. Geodynamics & Tectonophysics 14 (3), 0706 (in Russian) https://doi.org/10.5800/GT-2023-14-3-0706.
12. Kuznetsov A.B., Semikhatov M.A., Gorokhov I.M., 2018. Strontium Isotope Stratigraphy: Principles and State of the Art. Stratigraphy and Geological Correlation 26 (4), 367–386. https://doi.org/10.1134/S0869593818040056.
13. Leonov M.G., Kocharyan G.G., Revuzhenko A.F., Lavrikov S.V., 2020. Tectonics of Rock Loosening: Geological Data and Physics of the Process. Geodynamics & Tectonophysics 11 (3), 491–521 (in Russian). https://doi.org/10.5800/GT-2020-11-3-0488.
14. Liseikin A.V., Seleznev V.S., Soloviev V.M., Zamozhnyaya N.G., Kashirsky A.Yu., Kungurtsev L.V., 2025. Construction of Earth Crust Sections Down to the Moho Boundary Based on Low Amplitude Reflected Waves of River Seismic Survey Using CPD-2D Method (Vitim River, Junction Zone of the Angara-Lena Monocline of the Siberian Platform and the Bodaibo-Patom Folded System). Russian Geology and Geophysics 66 (1), 97–100. https://doi.org/10.2113/RGG20244769.
15. Makrygina V.A., 1981. Geochemistry of Regional Moderate-to-Low Pressure Metamorphism and Ultrametamorphism. Nauka, Novosibirsk, 199 p. (in Russian).
16. Marsanova M.R., 2019. Geological and Geophysical Models of the Deep Structure of the Nepa-Peleduy Arch and Its Junction Zone with the Baikal-Patom Foldbelt (in Connection with Oil and Gas Potential). PhD Thesis (Candidate of Geology and Mineralogy). Yakutsk, 136 p. (in Russian).
17. Melnikov N.V., 2018. Vendian-Cambrian Salt-Bearing Basin of the Siberian Platform: Stratigraphy, History of Development. SNIIGGiMS, Novosibirsk, 177 p. (in Russian)
18. Migurskiy F.A., 2018. Tectonic Structure and Geodynamic Reconstructions of Pre-Patom Regional Trough. In: M.I. Epov (Ed.), Oil-and-Gas Prospects of Regional Reservoirs in the Pre-Patom Regional Trough (Siberian Platform). Publishing House of SB RAS, Novosibirsk, p. 57–86 (in Russian)
19. Mitrofanov N.P., 2018. Geodynamic Problems of Metallogeny of Tin, Tungsten, Molybdenum. National Geology 6, 3–13 (in Russian). https://doi.org/10.24411/0869-7175-2018-10022.
20. Petrova Z.I., Makrygina V.A., Antipin V.S., 1997. Petrological and Geochemical Correlations Between Rapakivi Granites and Acid Volcanics in the Southern Fringing of the Siberian Platform. Petrology 5 (3), 258–277.
21. Rytsk E.Yu., Andreev A.A., Tolmacheva E.V., Kuznetsov A.B., Velikoslavinsky S.D., Fedoseenko A.M., 2021. Paleoproterozoic Age of Gneiss-Granites of the Mamskaya Zone (Baikal-Patom Belt): Geological Implications. Doklady Earth Sciences 498 (1), 367–371. https://doi.org/10.1134/S1028334X21050159.
22. Shakhtyrov V.G., 2010. Strike-Slip Structural Ensembles and Gold Mineralization of the Yana-Kolyma Folded System. Brief PhD Thesis (Doctor of Geology and Mineralogy). Irkutsk, 51 p. (in Russian)
23. Smelov A.P., Timofeev V.F., 2003. Terrane Analysis and the Geodynamic Model of the Formation of the North Asian Craton in the Early Precambrian. Pacific Geology 22 (6), 42–54 (in Russian)
24. Stanevich A.M., Mazukabzov A.M., Postnikov A.A., Nemerov V.K., Pisarevsky S.A., Gladkochub D.P., Donskaya T.V., Kornilova T.A., 2007. Northern Segment of the Paleoasian Ocean: Neoproterozoic Deposition History and Geodynamics. Russian Geology and Geophysics 48 (1), 46–60. https://doi.org/10.1016/j.rgg.2006.12.005.
25. State Geological Map of the Russian Federation, 2012. Aldan-Transbaikalia Series. Scale of 1:1000000. Sheet O-49 (Kirensk). Explanatory Note. VSEGEI, Saint Petersburg, 607 p. (in Russian)
26. Vakhromeev A.G., Pospeev A.V., 2015. Status and Development Prospects of Hydrocarbon Resource Base in the Irkutsk Region. In: Geology, Geophysics and Mineral Raw Materials of Siberia. Proceedings of the Second Scientific and Practical Conference (April 21–24, 2015). Vol. 2. SNIIGGiMS, Novosibirsk, p. 28–30 (Russian)
27. Zhmodik S.M., Postnikov A.A., Buslov M.M., Mironov A.G., 2006. Geodynamics of the Sayan-Baikal-Muya Accretion-Collision Belt in the Neoproterozoic–Early Paleozoic and Regularities of the Formation and Localization of Precious-Metal Mineralization. Russian Geology and Geophysics 47 (1), 183–198.
28. Zonenshain L.P., Kuzmin M.I., Natapov L.M., 1990. Tectonics of Lithospheric Plates of the USSR. Book 2. Nedra, Moscow, 334 p. (in Russian) [Зоненшайн Л.П., Кузьмин М.И., Натапов Л.М. Тектоника литосферных плит территории СССР. М.: Недра, 1990. Кн. 2. 334 с.].
29. Zorin Yu.A., Mazukabzov A.M., Gladkochub D.P., Donskaya T.V., Presnyakov S.L., Sergeev S.A., 2008. Silurian Age of Major Folding in Riphean Deposits of the Baikal-Patom Zone. Doklady Earth Science 423 (1), 1235–1239. https://doi.org/10.1134/S1028334X08080114.
30. Zorin Yu.A., Sklyarov E.V., Belichenko V.G., Mazukabzov A.M., 2009. Island Arc-Back-Arc Basin Evolution: Implications for Late Riphean – Early Paleozoic Geodynamic History of the Sayan-Baikal Folded Area. Russian Geology and Geophysics 50 (3), 149–161. https://doi.org/10.1016/j.rgg.2008.06.022.
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For citations:
Kungurtsev L.V., Goshko E.Yu., Buslov M.M., Liseykin A.V. DEEP-SEATED BOUNDARY STRUCTURES OF THE SIBERIAN CRATON AND THE BAIKAL-PATOM FOLD-AND-THRUST BELT IN THE CROSS-SECTION OF THE 1-SB-VOSTOCHNY PROFILE AND ITS CONTINUATION ALONG THE VITIM RIVER. Geodynamics & Tectonophysics. 2025;16(5):0848. (In Russ.) https://doi.org/10.5800/GT-2025-16-5-0848. EDN: https://elibrary.ru/xhofly
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