INTERPRETATION OF SHALLOW ELECTRICAL RESISTIVITY IMAGES OF FAULTS: TECTONOPHYSICAL APPROACH
K.Zh. Seminsky1, R.M. Zaripov1, V.V. Olenchenko2,3
1Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, 664033, Russia
2A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
3Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
Keywords: Fault zone, shallow electrical resistivity tomography
Subsection: GEOPHYSICS
Abstract
A new approach to interpretation of shallow electrical resistivity tomography (ERT) data discussed for the case of the Olkhon area (western Baikal region) stems from tectonophysical ideas of faulting phases and deformation levels in rocks. The deformation levels, identified statistically from ERT responses, constrain fault boundaries and subboundaries associated with the formation of main and subsidiary fault planes. Information of this kind creates a basis for solving various fundamental and applied problems of tectonics, mineral exploration, and engineering geology.
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