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The Murman-2018 Experiment on Remote Sensing in Order to Study the “Impenetrability” Boundary at the Transition between Brittle and Plastic States of the Crystalline Earth’s Crust

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Abstract

This paper describes the Murman-2018 experiment on remote electromagnetic sounding in combination with frequency and audio magnetotelluric soundings. The experimental results made it possible to quantify for the first time in the scientific literature the position of the boundary of a sharp increase in rock resistivity at a depth of 10–15 km. The nature of the established boundary (the “impenetrability” boundary for direct current) is related to the transition of rock properties in the Earth’s crust from the fragile state in the upper crust to a plastic state at a depth of 10–15 km or more.

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ACKNOWLEDGMENTS

We are grateful to the Leading Programmer T.G. Korotkova for assistance in processing and interpretation of the results obtained.

Funding

This work was supported by the Russian Foundation for Basic Research (project no. 18-05-00528) (expedition) and partially by a State Task, Geological Institute, Kola Science Center, Russian Academy of Sciences (project no. NIR 0226-2019-0052) (interpretation).

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Correspondence to A. A. Zhamaletdinov.

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Translated by E. Maslennikova

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Zhamaletdinov, A.A., Velikhov, E.P., Shevtsov, A.N. et al. The Murman-2018 Experiment on Remote Sensing in Order to Study the “Impenetrability” Boundary at the Transition between Brittle and Plastic States of the Crystalline Earth’s Crust. Dokl. Earth Sc. 486, 575–579 (2019). https://doi.org/10.1134/S1028334X19050301

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  • DOI: https://doi.org/10.1134/S1028334X19050301

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