Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity
Understanding hydrogeological processes at the origin of thermal and mineral groundwater are necessary to ensure their sustainable management. However, many processes are involved in their genesis and often only one or two processes are investigated at the same time. Here, we propose to use an innov...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/17/2413 |
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| author | Margaux Dupuy Emilie Garel Frederic Huneau Sebastien Santoni Maria Di Rosa Alexandra Mattei |
| author_facet | Margaux Dupuy Emilie Garel Frederic Huneau Sebastien Santoni Maria Di Rosa Alexandra Mattei |
| author_sort | Margaux Dupuy |
| collection | DOAJ |
| description | Understanding hydrogeological processes at the origin of thermal and mineral groundwater are necessary to ensure their sustainable management. However, many processes are involved in their genesis and often only one or two processes are investigated at the same time. Here, we propose to use an innovative combination of geochemical, isotopic (<sup>34</sup>S, <sup>14</sup>C, <sup>18</sup>O, <sup>2</sup>H) and geothermometry tools to identify, for the first time in a multi-composite geological context, all processes at the origin of diversified thermo-mineral waters. 19 springs covering a wide range of temperature and chemical composition emerging on a restricted area of Corsica Island (France) were selected. Geochemical results highlight five geochemical provinces, suggesting a common origin for some of them. Geothermometry tools show the unexpected involvement of a common deep groundwater reservoir within this non-active zone. Water stable isotopes highlight a contrasted altitude in recharge areas supplying lowland springs. This suggests that different flow patterns have to be involved to explain the wide geochemical diversity observed and to allow the design of a very first conceptual groundwater-flow model. This paper demonstrates the efficiency of the combination of the selected tools as tracers of water–rock interaction, independently of flow depth, intrinsic water properties, geological conditions and interaction time disparities. |
| first_indexed | 2024-03-10T08:02:17Z |
| format | Article |
| id | doaj.art-a692cd4437914520aa04feb305c1e1b0 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T08:02:17Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a692cd4437914520aa04feb305c1e1b02023-11-22T11:25:28ZengMDPI AGWater2073-44412021-09-011317241310.3390/w13172413Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater SingularityMargaux Dupuy0Emilie Garel1Frederic Huneau2Sebastien Santoni3Maria Di Rosa4Alexandra Mattei5Département d’Hydrogéologie, Université de Corse Pascal Paoli, Campus Grimaldi, BP 52, 20250 Corte, FranceDépartement d’Hydrogéologie, Université de Corse Pascal Paoli, Campus Grimaldi, BP 52, 20250 Corte, FranceDépartement d’Hydrogéologie, Université de Corse Pascal Paoli, Campus Grimaldi, BP 52, 20250 Corte, FranceDépartement d’Hydrogéologie, Université de Corse Pascal Paoli, Campus Grimaldi, BP 52, 20250 Corte, FranceDipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126 Pisa, ItalyDépartement d’Hydrogéologie, Université de Corse Pascal Paoli, Campus Grimaldi, BP 52, 20250 Corte, FranceUnderstanding hydrogeological processes at the origin of thermal and mineral groundwater are necessary to ensure their sustainable management. However, many processes are involved in their genesis and often only one or two processes are investigated at the same time. Here, we propose to use an innovative combination of geochemical, isotopic (<sup>34</sup>S, <sup>14</sup>C, <sup>18</sup>O, <sup>2</sup>H) and geothermometry tools to identify, for the first time in a multi-composite geological context, all processes at the origin of diversified thermo-mineral waters. 19 springs covering a wide range of temperature and chemical composition emerging on a restricted area of Corsica Island (France) were selected. Geochemical results highlight five geochemical provinces, suggesting a common origin for some of them. Geothermometry tools show the unexpected involvement of a common deep groundwater reservoir within this non-active zone. Water stable isotopes highlight a contrasted altitude in recharge areas supplying lowland springs. This suggests that different flow patterns have to be involved to explain the wide geochemical diversity observed and to allow the design of a very first conceptual groundwater-flow model. This paper demonstrates the efficiency of the combination of the selected tools as tracers of water–rock interaction, independently of flow depth, intrinsic water properties, geological conditions and interaction time disparities.https://www.mdpi.com/2073-4441/13/17/2413hydrochemistryisotope hydrologygeothermometrymineral waterthermal watergaseous springs |
| spellingShingle | Margaux Dupuy Emilie Garel Frederic Huneau Sebastien Santoni Maria Di Rosa Alexandra Mattei Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity Water hydrochemistry isotope hydrology geothermometry mineral water thermal water gaseous springs |
| title | Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity |
| title_full | Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity |
| title_fullStr | Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity |
| title_full_unstemmed | Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity |
| title_short | Geochemical and Isotope Characterisation of Thermo-Mineral Springs of Corsica Island: From Geological Complexity to Groundwater Singularity |
| title_sort | geochemical and isotope characterisation of thermo mineral springs of corsica island from geological complexity to groundwater singularity |
| topic | hydrochemistry isotope hydrology geothermometry mineral water thermal water gaseous springs |
| url | https://www.mdpi.com/2073-4441/13/17/2413 |
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