The Structure of Quaternary Deposits in the Upper Dnieper Valley According to Integrated (Combined) Geophysical Data

The ground penetrating radar (GPR) and electrical resistivity tomography (ERT) geophysical methods were used for geological mapping, location of lithological boundaries, and description of the inner structure of sediments of the Upper Dnieper zone, as well as for locating optimal sites for drilling...

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Bibliographic Details
Published in:Moscow University geology bulletin 2020-07, Vol.75 (4), p.413-424
Main Authors: Bricheva, S. S., Modin, I. N., Panin, A. V., Efremov, K. D., Matasov, V. M.
Format: Article
Language:English
Subjects:
Boreholes
Boundaries
Drilling
Earth and Environmental Science
Earth Sciences
Electrical resistivity
Geologic mapping
Geological sections
Geology
Geophysical data
Geophysical exploration
Glaciation
Lithology
Locating
Quaternary
Radar
Tomography
Valleys
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Summary:The ground penetrating radar (GPR) and electrical resistivity tomography (ERT) geophysical methods were used for geological mapping, location of lithological boundaries, and description of the inner structure of sediments of the Upper Dnieper zone, as well as for locating optimal sites for drilling and correlating borehole cores. The geophysical information we obtained allowed restructuring of the upper Dnieper valley due to Valdaian glaciation to be identified. The GPR data in the frequency range of 50–250 MHz enabled description of the upper part of the geological section; ERT provided data up to a 80–100-m depth. Modified focusing inversion based on the major boundaries obtained with GPR was performed to correct the ERT inversion model.
ISSN:0145-8752
1934-8436
DOI:10.3103/S014587522004002X