87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water
The determination of the current and past recharge sources, as well as the reconstruction of the timing of the recharge in geothermal reservoirs, is required in order to correctly assess the resource potential of these systems. Theistareykir is a newly developed geothermal field close to the well-kn...
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ftnkunivathens:oai:lib.uoa.gr:uoadl:3219912 2024-02-11T10:05:11+01:00 87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water Pinti, D.L. Haut-Labourdette, M. Poirier, A. Saby, M. van Hinsberg, V.J. Berlo, K. Castro, M.C. Gautason, B. Sigurðardóttir, Á.K. 2022-01-01 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3219912 Αγγλικά English eng uoadl:3219912 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3219912 scientific_publication_article Επιστημονική δημοσίευση - Άρθρο Περιοδικού Scientific publication - Journal Article 2022 ftnkunivathens 2024-01-18T19:16:48Z The determination of the current and past recharge sources, as well as the reconstruction of the timing of the recharge in geothermal reservoirs, is required in order to correctly assess the resource potential of these systems. Theistareykir is a newly developed geothermal field close to the well-known exploited fields of Krafla and Námafjall in NE Iceland. In this study, the87Sr/86Sr ratios measured in deep geothermal fluids are presented and, together with the Cl and noble gas signatures, are used to place constraints on the fluid sources. The Cl/Sr and87Sr/86Sr ratios show a peculiar and unique composition among Icelandic geothermal fluids. The87Sr/86Sr ratios range from 0.70355 to 0.70671, suggesting the presence of a significant seawater component—possibly marine aerosols added to rain or snowfall—as well as an additional source of Sr leached from local basalts. Moreover, a correlation between the atmospheric noble gas (ANGs) elemental ratios Ne/Ar, Kr/Ar and Xe/Ar, and the87Sr/86Sr ratios is observed. The latter results from the mixing of meteoric water with Sr leached from local basalts, meteoric water containing unrelated Sr from seawater, and recharge water with ANGs derived from trapped air bubbles in snow. We suggest that the combined ANGs and Sr seawater signatures are representative of a glacial water source derived from the melting of compacting snow. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. Article in Journal/Newspaper Iceland Pergamos - Library and Information Center of National and Kapodistrian University of Athens Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Námafjall ENVELOPE(-16.820,-16.820,65.631,65.631) |
institution |
Open Polar |
collection |
Pergamos - Library and Information Center of National and Kapodistrian University of Athens |
op_collection_id |
ftnkunivathens |
language |
English |
description |
The determination of the current and past recharge sources, as well as the reconstruction of the timing of the recharge in geothermal reservoirs, is required in order to correctly assess the resource potential of these systems. Theistareykir is a newly developed geothermal field close to the well-known exploited fields of Krafla and Námafjall in NE Iceland. In this study, the87Sr/86Sr ratios measured in deep geothermal fluids are presented and, together with the Cl and noble gas signatures, are used to place constraints on the fluid sources. The Cl/Sr and87Sr/86Sr ratios show a peculiar and unique composition among Icelandic geothermal fluids. The87Sr/86Sr ratios range from 0.70355 to 0.70671, suggesting the presence of a significant seawater component—possibly marine aerosols added to rain or snowfall—as well as an additional source of Sr leached from local basalts. Moreover, a correlation between the atmospheric noble gas (ANGs) elemental ratios Ne/Ar, Kr/Ar and Xe/Ar, and the87Sr/86Sr ratios is observed. The latter results from the mixing of meteoric water with Sr leached from local basalts, meteoric water containing unrelated Sr from seawater, and recharge water with ANGs derived from trapped air bubbles in snow. We suggest that the combined ANGs and Sr seawater signatures are representative of a glacial water source derived from the melting of compacting snow. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. |
format |
Article in Journal/Newspaper |
author |
Pinti, D.L. Haut-Labourdette, M. Poirier, A. Saby, M. van Hinsberg, V.J. Berlo, K. Castro, M.C. Gautason, B. Sigurðardóttir, Á.K. |
spellingShingle |
Pinti, D.L. Haut-Labourdette, M. Poirier, A. Saby, M. van Hinsberg, V.J. Berlo, K. Castro, M.C. Gautason, B. Sigurðardóttir, Á.K. 87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
author_facet |
Pinti, D.L. Haut-Labourdette, M. Poirier, A. Saby, M. van Hinsberg, V.J. Berlo, K. Castro, M.C. Gautason, B. Sigurðardóttir, Á.K. |
author_sort |
Pinti, D.L. |
title |
87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
title_short |
87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
title_full |
87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
title_fullStr |
87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
title_full_unstemmed |
87Sr/86Sr Ratios and Atmospheric Noble Gases in Theistareykir Geothermal Fluids: A Record of Glacial Water |
title_sort |
87sr/86sr ratios and atmospheric noble gases in theistareykir geothermal fluids: a record of glacial water |
publishDate |
2022 |
url |
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3219912 |
long_lat |
ENVELOPE(-16.747,-16.747,65.713,65.713) ENVELOPE(-16.820,-16.820,65.631,65.631) |
geographic |
Krafla Námafjall |
geographic_facet |
Krafla Námafjall |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
uoadl:3219912 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3219912 |
_version_ |
1790602075484192768 |