Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim
| Autor: | Igor Ďuriška, Roman Farkašovský, Barbora Ščerbáková, Kristína Bátorová, Stanislav Jacko |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Geothermal heating
Dolomite Pannonian basin 0211 other engineering and technologies Geochemistry utilization Aquifer 02 engineering and technology Management Monitoring Policy and Law Structural basin 010502 geochemistry & geophysics 01 natural sciences heat flow geotherm 021108 energy lcsh:Science Geothermal gradient 0105 earth and related environmental sciences Nature and Landscape Conservation geography geography.geographical_feature_category business.industry structural modeling Transtension East Slovakian basin atmospheric_science Renewable energy Permeability (earth sciences) Tectonics Volcano seismic lcsh:Q permeability renewable business resources Heat flow Geology |
| Zdroj: | Resources Volume 10 Issue 4 Resources, Vol 10, Iss 31, p 31 (2021) |
| ISSN: | 2079-9276 |
| DOI: | 10.3390/resources10040031 |
| Popis: | The Pannonian basin is a major geothermal heat system in Central Europe. Its peripheral basin, the East Slovakian basin, is an example of a geothermal structure with a linear, directed heat flow ranging from 90 to 100 mW/m2 from west to east. However, the use of the geothermal source is limited by several critical tectono-geologic factors: (a) Tectonics, and the associated disintegration of the aquifer block by multiple deformations during the pre-Paleogene, mainly Miocene, period. The main discontinuities of NW-SE and N-S direction negatively affect the permeability of the aquifer environment. For utilization, minor NE-SW dilatation open fractures are important, which have been developed by sinistral transtension on N–S faults and accelerated normal movements to the southeast. (b) Hydrogeologically, the geothermal structure is accommodated by three water types, namely, Na-HCO3 with 10.9 g·L−1 mineralization (in the north), the Ca-Mg-HCO3 with 0.5–4.5 g·L−1 mineralization (in the west), and Na-Cl water type containing 26.8–33.4 g·L−1 mineralization (in the southwest). The chemical composition of the water is influenced by the Middle Triassic dolomite aquifer, as well as by infiltration of saline solutions and meteoric waters along with open fractures/faults. (c) Geothermally anomalous heat flow of 123–129 °C with 170 L/s total flow near the Slanské vchy volcanic chain seems to be the perspective for heat production. |
| Databáze: | OpenAIRE |
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