A deep geoelectric model of the Bol’she-Bannyi hydrothermal system, Kamchatka
| Autor: | Yu. F. Moroz, V. A. Loginov, I. S. Ulybyshev |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
geography
geography.geographical_feature_category Anomaly (natural sciences) Metals and Alloys Drilling 02 engineering and technology Fault (geology) 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Hydrothermal circulation Transverse plane Permeability (earth sciences) 020303 mechanical engineering & transports Geophysics 0203 mechanical engineering Magnetotellurics Electrical resistivity and conductivity Petrology Seismology Geology 0105 earth and related environmental sciences |
| Zdroj: | Journal of Volcanology and Seismology. 11:367-376 |
| ISSN: | 1819-7108 0742-0463 |
| DOI: | 10.1134/s0742046317050062 |
| Popis: | This paper reports the results of magnetotelluric sounding (MTS) in the area where the Bol’she-Bannyi hydrothermal springs are discharged. The MTS curves were inverted on the assumption of a twodimensional inhomogeneous model using longitudinal and transverse curves of apparent resistivity. It was found that the geoelectric section contains a nearly vertical anomaly of high electrical conductivity at depths of 5.5–8 km, which is the signature of a deep-seated fault. The resulting geoelectric section for the upper crust and data from regional magnetotelluric soundings were used as a basis for developing a conceptual deep model of the Bol’she-Bannyi hydrothermal system. We quote an approximate estimate of rock porosity. According to the model, deep fluids come from a crustal layer into the subvertical deep-seated fault then penetrate via fissures into the sedimentary–volcanogenic cover, and finally arrive at the ground surface in zones of high rock permeability. We provide a recommendation for drilling a deep well in order to determine the potential of the Bol’she-Bannyi hydrothermal field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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