Author:
Burakhovich T., ,Kushnir A.,
Abstract
The current state and prospects for the development of geoelectromagnetic methods are considered. Problems and ways to solve them, new ideas and new tasks are discussed. Modern experimental methods of observations, universal software complexes for their processing, methods of three-dimensional model building of various geological and tectonic units of Ukraine are analyzed. The geological and geophysical interpretation results of regional and local three-dimensional models are shown. Geoelectrical inhomogeneities in the earth's crust and upper mantle of Ukraine, which are characterized by abnormally low and abnormally high values of resistivity, have been revealed. Zones of high conductivity that reach the surface are defined by subvertical heterogeneity and form a galvanically connected system. It spatially correlates with deep faults of various ranks, identified by geological data. The nature of conductivity anomalies at the depth of up to 2.5 km is due to the presence of conductive mineral associations (sulfides, graphite) in the zones of metasomatic processing rocks that lead to the formation of ore mineralization (uranium, gold, rare metals). In the earth's crust at the depths of 5–30 km and the upper mantle of 50–120 km, most likely, traces of the influence of modern mantle fluids are reflected. More and more often, according to the latest data, the nature of anomalies is considered as the result of the joint activity of electronic and ionic conductivity. Conductivity anomalies of the earth's crust and upper mantle indicate possible zones of geodynamic activation, and deep faults are defined by zones of increased permeability through which mantle fluids are unloaded through the lithosphere. In particular, the connection of conductivity anomalies on the territory of Ukraine with the processes of petroleum and ore deposit formation is demonstrated.
Publisher
Taras Shevchenko National University of Kyiv
Reference29 articles.
1. 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-Donets Basin. Kyiv: Znannya. [in Russian]
2. Models and Methods of Magnetotellurics;Berdichevsky;Springer-Verlag Berlin Heidelberg Burakhovich T Ganiev O Shirkov B (2015) Deep structure modeling of Golovanivsk suture zone on the basis of geoelectric data Visnyk of Taras Shevchenko National University of Kyiv Geology,2008
3. Burakhovich, T., Kushnir, A., Ilienko, V. (2021). Interpretation of the 3D geoelectrical model of the steppe Crimea bowels. Eupatoria and Saki profiles. Visnyk of Taras Shevchenko National University of Kyiv. Geology, 4(95), 34-38. http://doi.org/10.17721/1728-2713.95.04 [in Ukraine]
4. Burakhovich, T.K., Ilienko, V.A. Kushnir, A.M., (20222 ). Three-dimensional geoelectrical model of the central part of the Zvizdal-Zaliska and Brusyliv fault zones of the Ukrainian Shield. Geofizicheskij zhurnal, 44(3), 13-33. DOI:https://doi.org/10.24028/gj.v44i5.272325 [in Ukraine]
5. Burakhovich, T.K., Kulik, S.N., Khazan, Ya.M. (2001). Electrical conductivity anomalies in the crust and upper mantle of Ukraine. Acta Geoph. Polonica, 50(4), 547-565.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献