Abstract
The results of 1D and 2.5D modeling and inversion of amplitude and phase curves of magnetotelluric sounding in the Tobol-Ishim interfluve of Western Siberia are presented. Cross sections of the electrical conductivity of the crust and asthenosphere are constructed as well. It is suggested that there is a conductive layer lying at a depth of ~60–70 km. A decrease in the electrical resistivity of the overlying crustal layer from 1000–3000 to ~300 Ω-m which may be a sign of an increase in the conductivity of the earth’s crust is noted.
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Borisova, V.P., Vasilieva, T.A., Kostuchenko, S.L., Fainberg, E.B. (2019). On Deep Electroconductivity of Tobol-Ishim Interfluve. In: Nurgaliev, D., Khairullina, N. (eds) Practical and Theoretical Aspects of Geological Interpretation of Gravitational, Magnetic and Electric Fields. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-97670-9_29
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DOI: https://doi.org/10.1007/978-3-319-97670-9_29
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