Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones
The potential of high-temperature $({>}150~\text{°}\mathrm{C})$ geothermal systems in crustal fault zones (fault cores and hundreds of meters wide networks of interconnected fractures in the damage zone) is underestimated. Based on numerical models, we show that topography-driven, poroelasticity-...
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| Language: | English |
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Académie des sciences
2023-05-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.213/ |
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| author | Guillou-Frottier, Laurent Milesi, Gaétan Roche, Vincent Duwiquet, Hugo Taillefer, Audrey |
| author_facet | Guillou-Frottier, Laurent Milesi, Gaétan Roche, Vincent Duwiquet, Hugo Taillefer, Audrey |
| author_sort | Guillou-Frottier, Laurent |
| collection | DOAJ |
| description | The potential of high-temperature $({>}150~\text{°}\mathrm{C})$ geothermal systems in crustal fault zones (fault cores and hundreds of meters wide networks of interconnected fractures in the damage zone) is underestimated. Based on numerical models, we show that topography-driven, poroelasticity-driven as well as buoyancy-driven forces play a significant role in the establishment of shallow (1–4 km) thermal anomalies in fault zones. We investigate the role of permeability, topography, fault dip, tectonic regime and fault geometry on the amplitude of thermal anomalies. Favorable conditions include: (i) a damage zone thickness $>$ 100 m, (ii) a minimum cumulative displacement of 100–150 m and (iii) fault zone lengths of at least one kilometer. Based on these parameters, we propose new potential targets for the geothermal exploration of fault zones in Western Europe. |
| format | Article |
| id | doaj-art-2bebfdd94650472e90f5f6bc0144d71f |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-2bebfdd94650472e90f5f6bc0144d71f2025-02-07T10:41:48ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252023-05-01356S238942110.5802/crgeos.21310.5802/crgeos.213Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zonesGuillou-Frottier, Laurent0https://orcid.org/0000-0002-2698-1447Milesi, Gaétan1https://orcid.org/0000-0001-8658-9837Roche, Vincent2https://orcid.org/0000-0003-1482-3115Duwiquet, Hugo3https://orcid.org/0000-0003-0278-3005Taillefer, Audrey4https://orcid.org/0000-0001-8946-6875BRGM, Georesources Division, 45060 Orléans, France; ISTO, UMR 7327, Université d’Orléans, CNRS, BRGM, 45071, Orléans, FranceGeoRessources, CNRS, Université de Lorraine, Labcom CREGU, 54506 Vandœuvre-lès-Nancy, FranceISTEP, UMR 7193, Sorbonne Université, CNRS-INSU, 75005 Paris, France; Laboratoire des Fluides Complexes et leurs Réservoirs – IPRA, E2S-UPPA, TotalEnergies, CNRS, Université de Pau et des Pays de l’Adour, UMR 5150, 64012 Pau, FranceIFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, FranceUniversité Grenoble Alpes, Université Savoie Mont Blanc, CNRS, IRD, Université Gustave Eiffel, ISTerre, 38000 Grenoble, FranceThe potential of high-temperature $({>}150~\text{°}\mathrm{C})$ geothermal systems in crustal fault zones (fault cores and hundreds of meters wide networks of interconnected fractures in the damage zone) is underestimated. Based on numerical models, we show that topography-driven, poroelasticity-driven as well as buoyancy-driven forces play a significant role in the establishment of shallow (1–4 km) thermal anomalies in fault zones. We investigate the role of permeability, topography, fault dip, tectonic regime and fault geometry on the amplitude of thermal anomalies. Favorable conditions include: (i) a damage zone thickness $>$ 100 m, (ii) a minimum cumulative displacement of 100–150 m and (iii) fault zone lengths of at least one kilometer. Based on these parameters, we propose new potential targets for the geothermal exploration of fault zones in Western Europe.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.213/Geothermal energyHeat flowPermeabilityFault zonesFault geometry |
| spellingShingle | Guillou-Frottier, Laurent Milesi, Gaétan Roche, Vincent Duwiquet, Hugo Taillefer, Audrey Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones Comptes Rendus. Géoscience Geothermal energy Heat flow Permeability Fault zones Fault geometry |
| title | Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones |
| title_full | Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones |
| title_fullStr | Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones |
| title_full_unstemmed | Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones |
| title_short | Heat flow, thermal anomalies, tectonic regimes and high-temperature geothermal systems in fault zones |
| title_sort | heat flow thermal anomalies tectonic regimes and high temperature geothermal systems in fault zones |
| topic | Geothermal energy Heat flow Permeability Fault zones Fault geometry |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.213/ |
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