Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim
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/m<sup>2</sup> from west to east. However, the use of the geothermal...
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MDPI AG
2021-04-01
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| author | Stanislav Jacko Roman Farkašovský Igor Ďuriška Barbora Ščerbáková Kristína Bátorová |
| author_facet | Stanislav Jacko Roman Farkašovský Igor Ďuriška Barbora Ščerbáková Kristína Bátorová |
| author_sort | Stanislav Jacko |
| collection | DOAJ |
| description | 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/m<sup>2</sup> 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-HCO<sub>3</sub> with 10.9 g·L<sup>−1</sup> mineralization (in the north), the Ca-Mg-HCO<sub>3</sub> with 0.5–4.5 g·L<sup>−1</sup> mineralization (in the west), and Na-Cl water type containing 26.8–33.4 g·L<sup>−1</sup> 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. |
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| last_indexed | 2024-03-10T12:38:31Z |
| publishDate | 2021-04-01 |
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| record_format | Article |
| series | Resources |
| spelling | doaj.art-4bcd280fb0124c7786ccb152b03ecd312023-11-21T14:02:36ZengMDPI AGResources2079-92762021-04-011043110.3390/resources10040031Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin RimStanislav Jacko0Roman Farkašovský1Igor Ďuriška2Barbora Ščerbáková3Kristína Bátorová4Institute of Geosciences, Faculty BERG, Technical University of Košice, 04001 Košice, SlovakiaInstitute of Geosciences, Faculty BERG, Technical University of Košice, 04001 Košice, SlovakiaInstitute of Geosciences, Faculty BERG, Technical University of Košice, 04001 Košice, SlovakiaInstitute of Geosciences, Faculty BERG, Technical University of Košice, 04001 Košice, SlovakiaInstitute of Geosciences, Faculty BERG, Technical University of Košice, 04001 Košice, SlovakiaThe 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/m<sup>2</sup> 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-HCO<sub>3</sub> with 10.9 g·L<sup>−1</sup> mineralization (in the north), the Ca-Mg-HCO<sub>3</sub> with 0.5–4.5 g·L<sup>−1</sup> mineralization (in the west), and Na-Cl water type containing 26.8–33.4 g·L<sup>−1</sup> 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.https://www.mdpi.com/2079-9276/10/4/31geothermheat flowpermeabilitystructural modelingseismicresources |
| spellingShingle | Stanislav Jacko Roman Farkašovský Igor Ďuriška Barbora Ščerbáková Kristína Bátorová Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim Resources geotherm heat flow permeability structural modeling seismic resources |
| title | Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim |
| title_full | Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim |
| title_fullStr | Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim |
| title_full_unstemmed | Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim |
| title_short | Critical Tectonic Limits for Geothermal Aquifer Use: Case Study from the East Slovakian Basin Rim |
| title_sort | critical tectonic limits for geothermal aquifer use case study from the east slovakian basin rim |
| topic | geotherm heat flow permeability structural modeling seismic resources |
| url | https://www.mdpi.com/2079-9276/10/4/31 |
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