Geoelectrical inhomogeneities of the Crimean region as the seismicity and oil-gas potential zones


  • A. Kushnir Subbotin Institute of Geophysics, National Academy of Sciences of Ukraine, Ukraine
  • T.K. Burakhovich Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine, Ukraine



The three-dimensional geoelectrical model of the Earth’s crust and upper mantle of the Crimean region and adjacent territories has been built for the first time. It is based on the results of the Earth’s low-frequency electromagnetic field experimental observations, conducted in 2008—2013 by the Institutes of the National Academy of Sciences of Ukraine. The subvertical conductive zones or contacts of the different resistivity mainly in the near-surface layers coincide with the fault structures, most of which are confined to the boundaries between the different tectonic elements, such as the Scythian Plate and Mountain Crimea, North and South Kerch Zones and the other faults: Chongarskiy, Melitopol-Novotsarytsynskiy, Korsarsko-Feodosiyskiy, Gornostaevskiy and Kerch-Chkalivskiy. The Mykolayiv and West Crimean fault systems occur as large separate submeridional conductive zone. Deeper in the Earth’s crust and upper mantle, geoelectrical inhomogeneities are transformed into the subhorizontal structures (layers) and manifest themselves in regional anomalies. This fact may indicate the high permeability for deep fluids of contact zones during their formation. The deep sublatitudinal structure in the Earth’s crust is confidently traced, in the west it confirms and details the well-known Tarkhankut anomaly, and continues through the central Crimea to the northwestern part of the Kerch Peninsula. It is assumed that there is the strong sublatitudinal anomaly in the interior of the northwestern shelf of the Black Sea and in the northeastern part of the Kerch-Taman Depression at the crust — upper mantle boundary, it is contouring the Crimean Peninsula. The ultradeep fluid manifestation zones obtained according to seismotomography, the conductivity anomalies in the Earth’s crust and the upper mantle, increased heat flow and the spread of the earthquake hypocenters confirm the relationship between the Crimea seismicity and collision processes. It is shown the spatial coincidences of the hydrocarbon manifestations and the isolated conductivity anomalies, which are characterized by subvertical channels galvanically connected to sediments, or subvertical contact zones of different resistivity, which are observed not only in the Earth’s crust but also in the upper mantle layers (60—90, 110—140 km) and may cause the superdeep fluid inflow.



Fedishin, V.O. (Ed.). (1999). Atlas of oil and gas fields of Ukraine. Vol. VI. Southern oil and gas region. Lviv: Tsentr Evropy, 222 p. (in Ukrainian).

Baranova, E.P., Yegorova, T.P., & Omelchenko, V.D. (2008). Reinterpretation of DSS seismic data and gravity modeling along lines 25, 28 and 29 in the Black and Azov seas. Geofizicheskiy Zhurnal, 30(5), 1—20 (in Russian).

Burakhovich, T.K., Kushnir, A.N., Nikolaev, I.Yu., Sheremet, E.M., & Shirkov, B.I. (2016). Results of experimental electromagnetic studies of the Crimean region. Geofizicheskiy Zhurnal, 30(5), 1—20. (in Russian).

Burakhovych, T.K., Kushnir, A.M., Tsvetkova, T.O., & Shumlyanska, L.O (2013). Comprehensive interpretation of seismotomographic and geoelectric models for estimating geodynamic processes in the Crimean lithosphere. Naukovi pratsi UkrNDMI NAN Ukrayiny, (13), 12—26 (in Ukrainian).

Buryanov, V.B., Gordienko, V.V., Zavgorodnyaya, O.V., Kulik, S.N., & Logvinov, I.M. (1985). Geophysical model of the tectonosphere of Ukraine. Kiev: Naukova Dumka, 212 p. (in Russian).

Vakarchuk, S.G., Shevchenko, O.A., Dovzhok, T.E., Chepil, P.M., Kharchenko, M.V., & Karavaeva, Yu.A. (2009). Peculiarities of geological structure and assessment of oil and gas prospects of Middle Miocene and Upper Oligocene deposits at the Subbotin field. Naukovyy visnyk IFNTUNH, (3), 44—50 (in Ukrainian).

Gobarenko, V., Yegorova, T., & Stephenson, R. (2014). The structure of the Kerch peninsula and north-eastern part of the Black sea crust according to the results of local seismic tomography. Geofizicheskiy Zhurnal, 36(2), 18—34. 2014.116115 (in Russian).

Gordienko, V.V., & Tarasov, V.N. (2001). Modern activation and isotopy of helium in the territory of Ukraine. Kiev: Znannya, 102 p. (in Russian).

Kozlenko, M.V., Kozlenko, Yu.V., & Lysynchuk, D.V. (2009). The deep structure of the earth’s crust in the western part of the Black Sea shelf based on the results of a comprehensive re-interpretation of geophysical data along the DSS profile No. 25. Geofizicheskiy Zhurnal, 31(6), 77—91 (in Russian).

Kulik, S.N., & Burakhovich, T.K. (1984). Deep magnetotelluric sounding of the Tarkhankut Peninsula. Doklady AN USSR. Ser. B, (12), 15—18 (in Russian).

Kutas, R.I. (2010). Geothermal conditions of the Black Sea basin and its surroundings. Geofizicheskiy Zhurnal, 32(6), 135—158. (in Russian).

Kushnir, A.N., & Shirkov, B.I. (2013). Deep structure of the northwestern part of the Black Sea shelf according to geoelectric data. Naukovi pratsi UkrNDMI NAN Ukraini, (13), 178—190 (in Russian).

Kushnir, A.M. (2019). Geoelectrical heterogeneities of the crust and upper mantle of the territory of Ukraine. Doctor¢s thesis. Kyiv, 38 p. (in Ukrainian).

Lukin, A.E. (2014). Hydrocarbon potential of great depths and prospects of its mastering in Ukraine. Geofizicheskiy Zhurnal, 36(4), 3—23. 2014.112455 (in Russian).

Pashkevich, I.K., Rusakov, O.M., Kutas, R.I., Grin, D.N., Starostenko, V.I., & Janik, T. (2018). Lithospheric structure based on integrated analysis of geological-geophysical data along the DOBREfraction’99/DOBRE-2 profile (the East European Platform — the East Black Sea Basin). Geofizicheskiy Zhurnal, 40(5), 98—136. 2018.147476 (in Russian).

Porfiryev, V.B., Krayushkin, V.A., & Klochko, V.P. (1981). Geological criteria for prospecting for oil and gas in the heterogeneous basement of the Black Sea-Crimean oil and gas region. Geologicheskiy Zhurnal, (1), 38—47 (in Russian).

Pustovitenko, B.G., Kulchitskiy, V.E., & Pustovitenko, A.A. (2006). New maps of general seismic zoning of the territory of Ukraine. Features of the long-term seismic hazard model. Geofizicheskiy Zhurnal, 28(3), 54—77 (in Russian).

Samsonov, V.I., Shashorin, Yu.N., & Chepizhko, A.V. (2002). Genetic characteristics of the North Black Sea continental margin and the main elements of its tectonics: Proc. of the III Intern. conf. «Geodynamics and oil and gas systems of the Black Sea-Caspian region», Gurzuf, September 17¾21, 2001 (pp. 122—124). Simferopol: Tavria-Plus (in Russian).

Svidlova, V.A., & Pasynkov, G.D. (2013). Seismicity of Crimea in 2012. In Seismological Bulletin of Ukraine (pp. 6—10). Sevastopol: SPC «ECOSI-Hydrophysics» (in Russian).

Starostenko, V.I., Burakhovich, T.K., Kushnir, A.N., Legostaeva, O.V., Tsvetkova, T.A., Sheremet, E.M., & Shumlyanskaya, L.A. (2013). The possible nature of the seismic activity of the depths of the Predobudruzhsky trough and the Northern Dobruja. Geofizicheskiy Zhurnal, 35(1), 61—74. (in Russian).

Starostenko, V.I., Lukin, A.E., Rusakov, O.M., Pashkevich, I.K., Kutas, R.I., Gladun, V.V., Lebed, T.V., Maksimchuk, P.Ya., Legostaeva, O.V., & Makarenko, I.B. (2012). On the prospects for the discovery of massive hydrocarbon deposits in the heterogeneous traps of the Black Sea. Geofizicheskiy Zhurnal, 34(5), 3—21. (in Russian).

Farfulyak, L.V. (2016). Deep structure of the western part of the Scythian microplate according to modern seismic data: Candidate¢s thesis. Kyiv, 23 p. (in Ukrainian).

Tsvetkova, T.A., & Bugaenko, I.V. (2012). Seismotomography of the mantle under the East European platform: mantle velocity boundaries. Geofizicheskiy Zhurnal, 34(5), 161—172. (in Russian).

Sheremet, E.M., Burakhovich, T.K., Dudik, A.M., Nikolaev, I.Yu., Dudik, S.A., Kushnir, A.N., & Agarkova, N.G. (2016). Geoelectric and geochemical studies in predicting hydrocarbons in Ukraine. Kiev: Komprint, 489 p. (in Russian).

Yurovskiy, Yu.G. (1997). Seismicity and fluid migration of the Kerch-Taman region. Geodynamics of the Crimean-Black Sea region. Proceedings of the conference 22¾28 September 1996 (pp. 133—134). Simferopol: Edition of the Crimean Expert Council on Seismic Hazard Assessment and Earthquake Prediction (in Russian).

Kulik, S.N., Burakhovich, T.K., & Khazan, Ya.M. (2001). Electrical conductivity anomalies in the crust and upper mantle of Ukraine. Acta Geophysica Polonica, 50(4), 547—565.

Mackie, R.L., Smith, J.T. & Madden, T.R. (1994). Three-dimensional electromagnetic modeling using finite difference equations: the magnetotelluric example. Radio Science, 29, 923—935.

Starostenko, V. Janik, T., Yegorova, T., Farfuliak, L., Czuba, W., Środa, P., Thybo, H., Artemieva, I., Sosson, M., Volfman, Y., Kolomiyets, K., Lysynchuk, D., Omelchenko, V., Gryn, D., Guterch, A., Komminaho, K., Legostaeva, O., Tiira, T., & Tolkunov, A. (2015). Seismic model of the crust and upper mantle in the Scythian Platform: the DOBRE-5 profile across the northwestern Black Sea and the Crimean Peninsula. Geophysical Journal International, 201(1), 406—428.

Yegorova, T.P., Baranova, E.P., Gobarenko, V.S., & Murovskaya, A.V. (2018). Crustal Structure of the Crimean Mountains along the Sevastopol—Kerch Profile from the Results of DSS and Local Seismic Tomography. Geotectonics, 52(4), 468—484. 10.1134/S0016852118040027.



How to Cite

Kushnir, A., & Burakhovich, T. (2021). Geoelectrical inhomogeneities of the Crimean region as the seismicity and oil-gas potential zones. Geofizičeskij žurnal, 43(1), 69–92.