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Acta Geophysica

, Volume 66, Issue 2, pp 131–139 | Cite as

Electric resistivity distribution in the Earth’s crust and upper mantle for the southern East European Platform and Crimea from area-wide 2D models

  • Igor M. Logvinov
  • Viktor N. Tarasov
Research Article - Solid Earth Sciences
  • 131 Downloads

Abstract

Previously obtained magnetotelluric 2D models for 30 profiles made it possible to create an overview model of electric resistivity for the territory between 28°E and 36°E and between 44.5°N and 52.5°N. It allows us to distinguish a number of low resistivity objects (LRO) with resistivities lower than 100 Ω m the Earth’s crust and mantle. Two regional conductivity anomalies are traced. The Kirovograd conductivity anomaly extends south to the Crimea mountains. A new regional conductivity anomaly (Konkskaya) can be distinguished along the southern slope of the Ukrainian Shield from 29° to 34°E. In addition, many local LROs have been identified. According to the modeling results, the local low resistivity objects on the East European Platform appear along fault zones activated during last 5–7 M years and the model suggests their relation to known zones of graphitization and polymetallic ore deposits. Local LROs in the Dnieper–Donets Basin correlate with the main oil and natural gas fields in this area. The depth of the anomalous objects amounts to 5–22 km. This is consistent with the hypotheses that hydrocarbon deposits are related to generation and transport zones of carbon-bearing fluids.

Keywords

Conductivity Earth’s crust and upper mantle East European Platform Scythian plate Crimea Mineral resources 

Notes

Acknowledgements

Thanks to Prof. O.M. Rusakov for stimulating the study, discussion of the results and editing the manuscript. We thank the reviewers—their comments have significantly improved the presentation of the results of the research.

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Copyright information

© Institute of Geophysics, Polish Academy of Sciences & Polish Academy of Sciences 2018

Authors and Affiliations

  1. 1.S.I. Subbotin Name Institute of GeophysicsNational Academy of Sciences of Ukraine, KyivKievUkraine

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