Electric Resistivity Distribution in the Earth’s Crust and Upper Mantle for the Southern East European Platform and Crimea from Area-wide 2D Models

• Autorzy: Logvinov I. M. , Tarasov V. N.

Identyfikatory

DOI

10.1007/s11600-018-0125-2

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

conductivity; Earth crust; upper mantle; East European Platform; Crimea; mineral resources; Scythian plate

PL

przewodność; skorupa ziemska; płaszcz górny; platforma wschodnioeuropejska; Krym; zasoby mineralne

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2018
• Tom: Vol. 66, no. 2
• Strony: 131--139
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Logvinov I. M.

• S.I. Subbotin Name Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv, Kiev, Ukraine

autor

Tarasov V. N.

• S.I. Subbotin Name Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv, Kiev, Ukraine

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)