RUDN Journal of Engineering ResearchRUDN Journal of Engineering Research2312-81432312-8151Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)2555010.22363/2312-8143-2020-21-2-123-130Research ArticleSome peculiarities of the polarization structure of the electromagnetic field at high frequencies in geological sections: mathematical solutions and experimentsAbramovVladimir Yu.<p>Associate Professor of Department of Geology, Mining and Oil & Gas Engineering of RUDN University; Candidate of Geological Sciences</p>geophy-rudn@mail.ruPeoples’ Friendship University of Russia (RUDN University)1512202021212313029012021Copyright © 2020, Abramov V.Y.2020<p>The effects of induced polarization (IP) in the ore bodies and host rocks in the frequencies above 1 000 000 Hz were considered. The phase response of the complex resistivity (CR) system equipment Geozond have been explored instrumentally. The reliability of high-frequency IP measurements was confirmed by independent verification by mining activities. The results confirm the presence of IP effects in the ore bodies and host rocks. They suggest the necessity to account for IP effects in the interpretation of electromagnetic data, in particular, in induction logging data. The purpose of mathematical computer modeling in this work was to study the propagation of a high frequency electromagnetic field from a linear current source in a material medium by solving Maxwell's equations using finite-difference approximations (iterations) in the time domain. The measurement results were processed according to a well-known scheme, using the method of iterative selection in automatic mode. 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