The effect of seismic density irregularities on the stress-strain state of the Earth's crust and mantle tops along the profile 1-SB
https://doi.org/10.18303/2619-1563-2025-4-30
Abstract
Using the results of seismic density modeling on the 1-SB profile, the stress-strain state arising under the influence of gravity forces in the Earth's crust of the Baikal folded region was numerically studied. It has been shown that the main role in the formation of inhomogeneities of the stressed state and its anomalies is played by variations in the thickness and depth of layers of rocks with different physical and mechanical properties.
Supporting agencies: The study was carried out within the framework of the project No. FWZZ-2022-0021 “Regional structure features of the Earth’s crust and upper mantle of platform and folded areas of Siberia, their stress-strain state according to seismological, gravimetrical and geomechanical data”.
About the Authors
R. A. Bakeev
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
Yu. P. Stefanov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
E. A. Melnik
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
V. D. Suvorov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
E. V. Pavlov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
A. S. Salnikov
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
References
1. Burov E.B. Rheology and strength of the lithosphere // Marine and Petroleum Geology. 2011. Vol. 28 (8). Р. 1402–1443. doi:10.1016/j.marpetgeo.2011.05.008.
2. Digital tectonic (geological and structural) map of Russian federation. Scale 1:250 000 000. VSEGEI, St. Petersburg, 2003.
3. Drukker D., Prager W. Soil mechanics and plastic analysis or limit design // Mechanics. New in foreign science. No. 2. Defining laws of soil mechanics (In Russ.). Mir, Moscow, 1975. P. 166–177.
4. Garagash I.A., Nikolaevsky V.N. Non-associated flow laws and localization of plastic deformation // Advances in Mechanics. 1989. Vol. 12 (1). P. 131–183. (In Russ.).
5. Gol’din S.V., Suvorov V.D., Makarov P.V., Stefanov Yu.P. An instability gravity model for the structure and stress-strain of the lithosphere in the Baikal rift // Russian Geology and Geophysics. 2006. Vol. 47 (10). P. 1090–1101.
6. Melnik E.A., Suvorov V.D. Restoration of structure of Earth crust of Transbaikal based on data of in-depth seismic researches // International Research Journal. 2018. No. 12–2 (78). P. 92–97. (In Russ.). doi: 10.23670/IRJ.2018.78.12.054.
7. Nikolaevskii V.N. Governing equations of plastic deformation of granular medium // Journal of Applied Mathematics and Mechanics. 1971. Vol. 35 (6). P. 1017–1029. doi:10.1016/0021-8928(71)90106-7.
8. Rebetsky Yu.L. Tectonic stresses and strength of nature rock (In Russ.). Akademkniga, Moscow, 2007. 406 p.
9. Stefanov Yu.P. Deformation localization and fracture in geomaterials. Numerical simulation // Physical Mesomechanics. 2002. Vol. 5 (5). P. 107–118. (In Russ.).
10. Stefanov Yu.P., Bakeev R.A. Formation of flower structures in a geological layer at a strike-slip displacement in the basement // Izvestiya. Physics of the Solid Earth. 2015. No. 4. P. 535–547. EDN:UFAAWR. doi:10.1134/S1069351315040114.
11. Stefanov Yu P., Chertov M.A., Aidagulov G.R., Myasnikov A.V. Dynamics of inelastic deformation of porous rocks and formation of localized compaction zones studied by numerical modeling // Journal of the Mechanics and Physics of Solids. 2011. Vol. 59 (11). Р. 2323–2340. doi:10.1016/j.jmps.2011.08.002.
12. Vermeer P.A., de Borst R. Non-associated plasticity for soils, concrete and rock // Heron. 1984. Vol. 29 (3). P. 1–64.
13. Wilkins M.L. Computer simulation of dynamic phenomena. Springer-Verlag, Berlin, 1999. 260 p.
Review
For citations:
Bakeev R.A., Stefanov Yu.P., Melnik E.A., Suvorov V.D., Pavlov E.V., Salnikov A.S. The effect of seismic density irregularities on the stress-strain state of the Earth's crust and mantle tops along the profile 1-SB. Russian Journal of Geophysical Technologies. 2025;(4):30-41. (In Russ.) https://doi.org/10.18303/2619-1563-2025-4-30
Views:
62
JATS XML
Email this article 