Tectonics and gravity field structure of Central Kazakhstan
/ 0
- Details
- Category: Content №4 2023
- Last Updated on 28 August 2023
- Published on 30 November -0001
- Hits: 2403
Authors:
A. E. Abetov, orcid.org/0000-0002-1866-7677, Satbayev University, Almaty, the Republic of Kazakhstan
A. N. Uzbekov*, orcid.org/0000-0001-6152-4068, Satbayev University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2023, (4): 018 - 025
https://doi.org/10.33271/nvngu/2023-4/018
Abstract:
Purpose. Identification of the nature of the manifestation of tectonic elements of different ages in Central Kazakhstan in gravitational fields based on the results of the calculation of regional, intra-crustal and local transformants.
Methodology. Synthesis and analysis of the data on integrated interpretation and modeling of gravitational, geomagnetic, geothermal fields, the latest movements of the Earth’s crust and parameters of the seismic regime, tectonics and stratigraphy of rocks.
Findings. Regional, intra-crustal and local heterogeneities in the lithosphere manifest themselves differently in blocks of Precambrian rocks, Early and Late Caledonides, Early and Late Hercynides. They may be associated with the processes of Paleozoic intracontinental rifting, with the rise of mantle matter and its emplacement into the Earth’s crust, followed by the manifestation of Late Paleozoic orogenesis, doubling of the thickness of the Earth’s crust, outpourings of magmatic formations.
Originality. It is established that large gravitational minima are distinguished in areas with Hercynian folding, characterized by abnormally high amplitudes in the movement of the Earth’s crust. In the regions of the Caledonian folding, the values of gravity field anomalies of intermediate intensity and increased amplitudes of the latest movements of the Earth’s crust are manifested. Areas with Pre-Paleozoic folding have relative maxima of gravitational anomalies and minimum values of the latest movements of the Earth’s crust. Earthquake sources are concentrated in the consolidated crust at the junction of areas with different ages of basement consolidation, in gradient zones of geothermal, geomagnetic and gravitational anomalies. According to the variations of the intra-crustal transformant, it was found that a wide range of changes in the values of the gravitational field corresponds to areas with minimal temperature values, whereas in areas with increased temperature values, the range of changes in the values of gravity anomalies is reduced. The distribution of the local transformant of the gravitational field indicates the existence of highly variable anomalies, which reflects the high-frequency gravitational effect of near-surface objects of the Earth’s crust.
Practical value. The distribution of inhomogeneities in the lithosphere with various density, geomagnetic and geothermal anomalies of geophysical fields, the nature of the seismic regime and the latest movements of the Earth’s crust predetermined the formation of geostructures with different types of mineralization, each of which is recommended to be searched and explored by a specific rational set of geophysical methods.
Keywords: gravitational field, geothermal field, geomagnetic field, regional transformant, intra-crustal transformants, local transformant, tectonic faults, seismicity
References.
1. Geology of the USSR. (Vol. XX. Central Kazakhstan. Geological description of book 1). (1972). Moscow: Publishing house “NEDRA”.
2. Abdullin, A. A. (1994). Geology and mineralogy resourses of Kazakhstan. Galym. Almaty.
3. Kopobaeva, A. N., Amangeldikyzy, A., Askarova, N. S., & Makat, D. K. (2018). Tectonic zoning of Central Kazakhstan. Proceedings of the University. Karaganda, 3, 82-87. ISSN 1609-1825.
4. Korobkin, V. V. (2011). Tectonic zoning and structural styles of paleozoic Kazakhstan. Proceedings of Tomsk Polytechnic University. Geology and Minerals, 319(1), 71-77. ISSN 1684-8519.
5. Malchenko, E. G., Kurchavov, A. M., Kozlov, A. A., & Khamzin, B. S. (2002). Tectonics and geophysics of the lithosphere. In Geodynamic aspects of the formation of geophysical features of the main orogenic structures of the paleozoic Central Kazakhstan, (pp. 329-33). Moscow: GEOS.
6. Samygin, S. G., & Kheraskova, T. N. (2019). Geological structure and stages of tectonic evolution of paleozoic Kazakhstan. Lithosphere, 19(3), 347-371. https://doi.org/10.24930/1681-9004-2019-19-3-347-371.
7. Degtyarev, K. E. (2012). Tectonic evolution of Early Paleozoic island-arc systems and formation of the continental crust of the Caledonids of Kazakhstan. Moscow: GEOS. ISBN: 978-5-89118-571-5.
8. Bekzhanov, G. R., Koshkin, V. Y., & Nikitchenko, I. I. (2000). Geological Structure of Kazakhstan. Almaty: Academy of Mineral Resources of the Republic of Kazakhstan. ISBN 978-601-332-461-6.
9. Uzhkenov, B. S., Lyubetsky, V. N., & Lyubetskaya, L. D. (2000). New ideas about geodynamics of Kazakhstan’s development, Geodynamics and Mineralogy of Kazakhstan, Almaty, RHO WAC RK, 1, 26-39. ISBN 9965-13-760-9.
10. Abdullin, A. A., & Antonenko, A. N. (1982). Study of the Earth’s crust and upper mantle in Kazakhstan. Moscow: Nauka.
11. Akishev, T. A., & Shneider, I. Yu. (1984). State of gravimetric and magnetometric research in Kazakhstan. Theory and practice of geological interpretation. Alma-Ata: Nauka.
12. Akishev, T. A. (1985). State graviametric map of Kazakhstan in Bouguer reduction of scale 1:1500000, 1:500000. Moscow: Map Series.
13. Lyubetsky, V. N., Lyubetskaya, L. D., Bikeev, V. S., Shabalina, P. V., & Urdabaev, A. T. (2006). Features of the lithosphere structure of Kazakhstan, determining the depth criteria of localization of belts of different-type mineralization. Proceedings of the NAS RK. Series geology, 4-13. ISSN 2224-5278.
14. Nusipov, E. N., Shatsilov, V. I., & Uzbekov, N. B. (2007). Geodynamics and seismicity of lithosphere of Kazakhstan. Almaty. ISBN 9965-700-76-1.
15. Abetov, A. E., & Uzbekov, A. N. (2020). Geophysical fields and seismicity of Central Kazakhstan. Vestnik NNC RK. Kurchatov, 4, 119-126. ISSN 1729-7885 (Online). ISSN 1729-7516 (Print).
16. Lyubetsky, V. N., Lyubetskaya, L. D., Shabalina, L. V., & Istekova, S. A. (2016). Central Kazakhstan paleorift system: deep structure, patterns of mineralization placement. Almaty: KazNTU. ISBN 978-601-228-975-6.
17. Shabalina, L. V. (2003). Model of the deep structure of the Central Kazakhstan paleorift system. Proceedings of the National Academy of Sciences of Kazakhstan. Series Geology, 4, 16-23. ISSN 2224-5278.
18. Abetov, A. E., Uzbekov, A. N., & Akhmetov, A. A. (2019). Thermal fields of Central Kazakhstan. Bulletin of KazNITU, Almaty, 4(134), 355-360. ISSN 1680-9211.
19. Istekova, S. A. (2007). Comparison of features of the gravity field of Central Kazakhstan and the region of high Asia. Bulletin of KazNTU. Almaty, 6, 1-9. ISSN 2959-2348.
20. Votsalevsky, E. S., Daukeev, S. Zh., Kolomiets, V. P., Komarov, V. P., Paragulgov, H. H., Pilifosov, V. M., & Shalygin, D. A. (2002). Deep structure and mineral resources of Kazakhstan. Oil and gas. National Academy of Sciences of the Republic of Kazakhstan, Almaty, 3. ISBN: 9965-13-760-9.
21. Kurchavov, A. M. (2002). Features of formation and composition of magmatites of the Tastau riftogenic structure of Central Kazakhstan, Rifts of the lithosphere: evolution, tectonics, magmatic, metamorphic and sedimentary complexes, minerals. Proceedings of the international scientific conference in Ekaterinburg, Lithosphere, 2019, 19(6), 889-901.
22. Mikhailova, N. N. (2013). Seismicity and the nature of the stress-strain state in weakly seismic regions of Kazakhstan. Bulletin of the NNC RK. Kurchatov, 2, 140-154. ISSN 1729-7516.
23. Abetov, A. E., & Uzbekov, A. N. (2019). Depth structure of Central Kazakhstan. Bulletin of KazNITU, Almaty, 6(136), 28-34. ISSN 1680-9211.
24. Timush, A. V. (2011). Seismotectonics of the lithosphere of Kazakhstan. Almaty: Luxe Media Group. ISSN 2518-170X (Online), ISSN 2224-5278 (Print).
25. Abetov, A. E., Uzbekov, A. N., Grib, N. N., & Imaev, V. I. (2020). Newest tectonics and modern geodynamics of mining industrial areas of Central Kazakhstan. IOP Conference Series: Earth and Environment Science, 459, 042011. https://doi.org/10.1088/1755-1315/459/4/042011.
Newer news items:
- Energy transition: the future of energy on the base of smart specialization - 28/08/2023 20:15
- Designing the working surfaces of rotary planetary mechanisms - 28/08/2023 20:15
- Improvement of the service life of mining and industrial equipment by using friction modifiers - 28/08/2023 20:15
- Hydrodynamics of vapor-liquid flows in curvilined channels of separation devices of power plants - 28/08/2023 20:15
- Substantiating a method for computer analysis of the stress-strain state of the tubbing erector manipulator mechanism - 28/08/2023 20:15
- Application of the stereomicrophotogrammetric method for the complex study of the Al-Cu-Mg alloys system - 28/08/2023 20:15
- Magnetic stimulation of chemical reactions in coal - 28/08/2023 20:15
- Selection and justification of drilling and blasting parameters using genetic algorithms - 28/08/2023 20:15
- Improving the technology of extracting coal concentrate from fly ash from thermal power plants - 28/08/2023 20:15
- A new mining method for reopening the opencast mine of Kef Essennoun - 28/08/2023 20:15
Cooperation