Abstract
This work reports on the results of the studies of the material composition and physical properties of the basement rocks of the West Siberian Plate. It has been shown that the rocks contain bitumens of anthraxolite and kerite groups. We assume that the bitumens create the Late Paleozoic paleodeposit, transformed under the conditions of apocatagenesis. Impregnation with highly transformed organic matter leads to a significant decrease in electrical resistivity to values of 1–30 ohm m, which must be taken into consideration when interpreting the low-resistivity zones on the basis of log data.
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ACKNOWLEDGMENTS
The authors are grateful to D.A. Ksenofontov, V.S. Shcherbakov, and A.Yu. Bychkov (Moscow State University) for discussion of the problematic issues of the study and assistance in analyzing the results, and to I.A. Mel’nik (School of Earth Science and Engineering, Tomsk Polytechnical University, Tomsk) for providing the authors' articles on the research topic.
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This work was performed using equipment purchased with funds from the Development Program of Moscow State University.
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Translated by V. Krutikova
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Khotylev, A.O., Kozlova, E.V., Belokhin, V.S. et al. Bitumens as a Cause of the Occurrence of the Low Electrical Resistivity Zones in the Basement Rocks of the West Siberian Plate. Moscow Univ. Geol. Bull. 76, 383–397 (2021). https://doi.org/10.3103/S0145875221040062
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DOI: https://doi.org/10.3103/S0145875221040062