Three-dimensional geoelectrical model of the central part of the Zvizdal-Zaliska and Brusyliv fault zones of the Ukrainian Shield
DOI:
https://doi.org/10.24028/gj.v44i5.272325Keywords:
Ukrainian Shield, Zvizdal-Zaliska fault zone, Brusyliv fault zone, magnetotelluric sounding, magnetovariational profiling, three-dimensional geoelectrical model, conductivity anomalies, mineralsAbstract
To study the deep structure of the geoelectrically complex junction zone of three megablocks of the western part of the Ukrainian Shield (Volyn', Podil, and Ros'), a three-dimensional model of the central part of the Zvizdal-Zaliska and Brusyliv fault zones was created. It is based on modern experimental observations of the Earth's natural low-frequency electromagnetic field in a wide range of periods. Synchronous experimental data of deep magnetotelluric sounding and magnetovariational profiling, obtained by the Institutes of the National Academy of Sciences of Ukraine in 2009—2019, were analyzed. The main issues of the geoelectrical modeling methodology using the Mtd3fwd software complex were considered, such as model elements, stages, alternative models, examples of calculations and comparison of observations, errors, etc. The constructed model analysis showed that of the large number of near-surface anomalies with low resistivity (5 to 100 Ohm · m), most sink to 500 m and only a few reach a depth of 1 km and are followed up to 11 km. It was established that there are connections between conductivity and structural features of the Zvizdal-Zaliska, Brusyliv, Nemyriv fault zones, the Samgorod fault and the Kocheriv synclinorium. Most of the isolated conductors appear in a mosaic pattern along the extended fault zones and form interspersed chains of high and low resistivity. Regional anomalies were confirmed and detailed both in the deep part of the crust and in the upper mantle; part of the Zvizdal-Zaliska fault zone appeared at depths of 15—30 km as a contact zone of abnormally high and low resistivities. Anomalies are confined to elongated zones of metasomatization and graphitized rock areas, some of the surface anomalies correspond to areas of the weathering crust. Most of the anomalies coincide with ore occurrences, ore-bearing fields and mineral deposits. The conducted geological-geoelectrical analysis of the model made it possible for the first time to identify two promising areas for further study that meet the geoelectrical criteria for the mineral search: along the Zvizdal-Zaliska fault zone between the Samgorod and Unava faults; along the Samgorod fault in the area of its intersection with the Kocheriv and Taboriv faults.
References
Galetskyi, L.S. (Ed.). (2001). Atlas «Geology and minerals of Ukraine». Kyiv: Publ. of the Institute of Geological Sciences of the National Academy of Sciences of Ukraine, 168 p. (in Ukrainian).
Belyavskiy, V.V., Burakhovich, T.K., Kulik, S.N., & Sukhoy, V.V. (2001). Electromagnetic methods in the study of the Ukrainian Shield and the Dnieper-Donetsk depression. Kiev: Znannya, 227 p. (in Russian).
Burakhovich, T.K., & Kulik, S.N. (2009). Three-dimensional geoelectric model of the Earth‘s crust and upper mantle of the western part of the Ukrainian Shield and its slopes. Geofizicheskiy Zhurnal, 31(1), 88—99 (in Russian).
Burakhovich, T.K., Nikolaev, I.Yu., Sheremet, E.M., & Shirkov, B.I. (2015). Geoelectric anomalies of the Ukrainian Shield and their relation to mineral deposits. Geofizicheskiy Zhurnal, 37(6), 42—63. https://doi.org/10.24028/gzh.0203-3100.v37i6.2015.111171 (in Russian).
Antsiferov, A.V., Sheremet, E.M., & Esipchuk, K.E. (Eds.). (2009). Geological and geophysical model of the Nemirovsko-Kocherovskaya suture zone of the Ukrainian Shield. Donetsk: Weber, 254 p. (in Russian).
Goshovsky, S.V. (Ed.). (2003). Complex metallogenic map of Ukraine on a scale of 1 : 500,000 and an explanatory note to it. Kyiv: Publ. of UkrDGRI (in Ukrainian).
State geological map of Ukraine, scale 1 : 200,000, sheet M-35-XVIII (Fastiv). (2003). Kyiv: Geoinform of Ukraine (in Ukrainian).
State geological map of Ukraine, scale 1 : 200,000 sheet M-35-XXIV (Skyra). (2005). Kyiv: Geoinform of Ukraine (in Ukrainian).
Zyultsle, V. (2003). Report on the 1 : 200,000-scale geological survey of the territory of sheet M-35-XXIV (Skyra) for 1998—2003. Geological structure and mineral resources of the basin of the headwaters of the Ros River. PDRGP «Northern Geology» (in Ukrainian).
Ilchenko, T.V., Sologub, N.V., Tripolskiy, A.A., & Chekunov, A.V. (1988). Lithosphere of Central and Eastern Europe: Geotraverses IV, VI, VIII. Kyiv: Naukova Dumka (in Russian).
Ilyenko, V.A. (2020). Electrical conductivity of fault zones of the Earth’s crust in the Kocheriv section of the western part of the Ukrainian Shield. Extended abstract of candidate’s the-sis. Kyiv, 22 p. (in Ukrainian).
Ilyenko, V.A., Kushnir, A.M., & Burakhovich, T.K. (2019). Electromagnetic studies of Zvizdal-Zaliska and Brusyliv fault zones of the Ukrainian Shield. Geofizicheskiy Zhurnal, 41(4), 97—113. https://doi.org/10.24028/gzh.0203-3100.v41i4.2019.177370 (in Russian).
Ilyenko, V., Burakhovich, T., Kushnir, A., Popov, S., & Omelchuk, O. (2020). Magnetoteluric and magnetovariate researches in the endocontact area of korninsky granite array. Visnyk Kyyivs’koho natsional’noho universytetu imeni Tarasa Shevchenka. Heolohiya, (1), 46—52. http://doi.org/10.17721/1728-2713.88.07 (in Ukrainian).
Kalashnikov, G.A. (2013). Deep factors of the formation of industrial uranium deposits of the Ukrainian Shield. Extended abstract of candidate’s thesis. Kyiv, 40 p. (in Ukrainian).
Mychak, S.V., Bakarzhyeva, M.I., Farfuliak, L.V., & Marchenko, A.V. (2022). The inner structure and kinematics of the Zvizdal-Zalisk and Brusyliv fault zones of the Ukrainian Shield by the results of tectonophysical, magneto-metrical data. Geofizicheskiy Zhurnal, 44(1), 83—110. https://doi.org/10.24028/gzh.v44i1. 253712 (in Ukrainian).
Nikolaev, I.Y., Kushnir, A.M., Ilyenko, V.A., & Nikolaev, Yu.I. (2019). Electromagnetic studies of the western part of the Ukrainian Shield. Geofizicheskiy Zhurnal, 41(3), 120—133. https://doi.org/10.24028/gzh.0203-3100.v41i3.2019.172433 (in Ukrainian).
Nechaev, S.V., Gintov, O.B., & Mychak, S.V. (2019). On the relation between the rare-earth — rare-metal and gold ore mineralization and fault-block tectonics of the Ukrainian Shield. 1. Geofizicheskiy Zhurnal, 41(1), 3—32. https://doi.org/10.24028/gzh.0203-3100.v41i1.2019.158861 (in Russian).
Starostenko, S.V., & Gintov, O.B. (Eds.). (2018). Essays on the geodynamics of Ukraine. Kyiv: VI EN EY, 466 p. (in Russian).
Radziwill, A.Ya. (1994). Carbonaceous formations and tectonomagmatic structures of Ukraine. Kyiv: Naukova Dumka, 172 p. (in Russian).
Ryabenko, V.A., Moskina, O.D., & Zlobenko, I.F. (1980). Carbonaceous formations of the western part of the Ukrainian Shield. Kyiv: Publ. of the Institute of Geological Sciences of the Academy of Sciences of USSR, 52 p. (in Russian).
Starostenko, V.I., Gintov, O.B., & Kutas, R.I. (2011). Geodynamic development of the lithosphere of Ukraine and its role in the formation and location of mineral deposits. Geofizicheskiy Zhurnal, 33(3), 3—22. https://doi.org/10.240 28/gzh.0203-3100.v33i3.2011.116919 (in Russian).
Shestopalov, V.M., Lukin, A.E., Zgonnik, V.A., Makarenko, A.N., Larin, N.V., & Boguslavskiy, A.S. (2018). Essays on the degassing of the Earth. Kyiv: BADATA-Intekservis, 632 p. (in Russian).
Shyrkov, B.I., & Burakhovich T.K. (2017). Electromagnetic methods for forecasting ore mineral resources occurrences. Visnyk Kyyivs’koho natsional’noho universytetu imeni Tarasa Shevchenka. Heolohiya, (4), 40—45. http://doi.org/10.17721/1728-2713.79.06 (in Ukrainian).
Shyrkov, B.I., Burakhovich Т.K., & Kushnir, A.N. (2017). Three-dimensional geoelectric model of the Golovanevsk suture zones of the Ukrainian Shield. Geofizicheskiy Zhurnal, 39(1), 41—60. https://doi.org/10.24028/gzh.0203-3100.v39i1.2017.94010 (in Russian).
Yatsenko, V.G. (2008). Geology, mineralogy and genesis of graphite of the Ukrainian Shield. Kiev: Logos, 127 p. (in Russian).
Berdichevsky, M.N., & Dmitriev, V.I. (2008). Models and Methods of Magnetotellurics. Berlin Heidelberg: Springer Verlag, 563 p.
Cherevatova, M., Smirnov, M.Yu., Jones, A.G., & Pedersen, L.B. (2015). Magnetotelluric array data analysis from north-west Fennoscandia. Tectonophysics, 653, 1—19. https://doi.org/10.1016/j.tecto.2014.12.023.
Curtis, S., & Thiel, S. (2019). Identifying lithospheric boundaries using magnetotellurics and Ndisotope geochemistry: An example from the Gawler Craton, Australia. Precambrian Research, 320, 403—423. https://doi.org/10.1016/j.precamres.2018.11.013.
Ilyenko, V.A., Burakhovich, Т.К., Kushnir, A.M., & Nikolaev, Yu.I. (2019). MT/MV investigation of faulty tectonic zones of the western part of the Ukrainian Shield. XVIIIth International Conference «Geoinformatics: Theoretical and Applied Aspects». Kyiv. https://doi.org/10.3997/2214-4609.201902106.
Ingerov, A.I., Rokityansky, I.I., & Tregubenko, V.I. (1999). Forty years of MTS studies in the Ukraine. Earth, Planets and Space, 51, 1127—1133. https://doi.org/10.1186/BF03351586.
Khoza, T.D., Jones, A.G., Muller, M.R., Evans, R.L., Miensopust, M.P., & Webb, S.J. (2013). Lithospheric structure of an Archean craton and adjacent mobile belt revealed from 2-D and 3-D inversion of magnetotelluric data: Example from southern Congo craton in northern Namibia. Journal of Geophysical Research: Solid Earth, 118(8), 4378—4397. https://doi.org/10.1002/jgrb.50258.
Mackie, R.L., & Booker, J. (1999). Documentation form td3fwd and d3-to-mt. GSY-USAInc.
Smith, R. (2014). Electromagnetic induction methods in mining geophysics from 2008 to 2012. Surveys in Geophysics, 35, 123—156.
Spratt, J.E., Jones, A.G., Jackson, V.A., Collins, L., & Avdeeva, A. (2009). Lithospheric geometry of the Wopmay orogen from a Slave craton to Bear Province magnetotelluric transect. Journal of Geophysical Research, 114, B01101. https://doi.org/10.1029/2007JB005326.
Vaittinen, K., Korja, T., Kaikkonen, P., Lahti, I., & Smirnov, M.Yu. (2012). High-resolution magnetotelluric studies of the Archaean-Proterozoic border zone in the Fennoscandian Shield, Finland. Geophysical Journal International, 188(3), 908—924. https://doi.org/10.1111/j.1365-246X.2011.05300.x.
Zaher, M.A., Pirttijдrvi, M., & Korja, T. ( 2017) Geophysical Studies of the Raahe-Ladoga Shear Complex in the Iisalmi Area of Finland. Geophysica, 52(2), 43—67.
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