دورية أكاديمية
Time scales of regional circulation of saline fluids in continental aquifers (Armorican massif, Western France)
| العنوان: | Time scales of regional circulation of saline fluids in continental aquifers (Armorican massif, Western France) |
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| المؤلفون: | Armandine Les Landes, Antoine, Aquilina, Luc, Davy, Philippe, Vergnaud, Virginie, Le Carlier de Veslud, Christian |
| المساهمون: | Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1812-2108. |
| بيانات النشر: | HAL CCSD European Geosciences Union |
| سنة النشر: | 2014 |
| المجموعة: | Archive Ouverte de l'Université Rennes (HAL) |
| مصطلحات موضوعية: | [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
| الوصف: | International audience ; In recent decades, saline fluids have been sampled worldwide at great depths in continental basements. Although some of them have been attributed to marine transgressions the mechanisms allowing their circulation is not understood. In this paper, we describe the horizontal and vertical distribution of moderately saline fluids (60 to 1400 mg L−1) sampled at depths ranging from 41 to 200 m in aquifers at the regional scale of the Armorican Massif (northwestern France). The horizontal and vertical distributions of high chloride concentrations are in good agreement with both the altitudinal and vertical limits and succession of the three major transgressions between the Mio-Pliocene and Pleistocene ages. The mean chloride concentration for each transgression area is exponentially related to the time spanned until present. It defines the potential laws of leaching of marine waters by fresh meteoric waters. The results of the Armorican aquifers provide the first observed constraints for the time scales of seawater circulation in the continental basement and the subsequent leaching by fresh meteoric waters. The general trend of increasing chloride concentration with depth and the time frame for the flushing process provide useful information to develop conceptual models of the paleo-functionning of Armorican aquifers. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | insu-01018956; https://insu.hal.science/insu-01018956Test; https://insu.hal.science/insu-01018956/documentTest; https://insu.hal.science/insu-01018956/file/armandine-HESS-2014-HAL.pdfTest |
| DOI: | 10.5194/hessd-11-6599-2014 |
| الإتاحة: | https://doi.org/10.5194/hessd-11-6599-2014Test https://insu.hal.science/insu-01018956Test https://insu.hal.science/insu-01018956/documentTest https://insu.hal.science/insu-01018956/file/armandine-HESS-2014-HAL.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.8EC5E3ED |
| قاعدة البيانات: | BASE |
| DOI: | 10.5194/hessd-11-6599-2014 |
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