The behaviour of metals in deep fluids of NE Iceland
In this contribution, we present some of the first data on the elemental signature of deep crustal fluids in a basalt-hosted, low-chloride magmatic-hydrothermal system. Down-hole fluid samples (850–1600 m) from wells in the Theistareykir and Krafla geothermal fields in the Northern Volcanic Zone of...
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ftpubmed:oai:pubmedcentral.nih.gov:9763496 2023-05-15T16:46:44+02:00 The behaviour of metals in deep fluids of NE Iceland Saby, Marion van Hinsberg, Vincent Pinti, Daniele L. Berlo, Kim Gautason, Bjarni Sigurðardóttir, Ásgerður Brown, Kevin Rocher, Océane 2022-12-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9763496/ http://www.ncbi.nlm.nih.gov/pubmed/36536021 https://doi.org/10.1038/s41598-022-26028-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9763496/ http://www.ncbi.nlm.nih.gov/pubmed/36536021 http://dx.doi.org/10.1038/s41598-022-26028-x © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2022 ftpubmed https://doi.org/10.1038/s41598-022-26028-x 2022-12-25T01:51:17Z In this contribution, we present some of the first data on the elemental signature of deep crustal fluids in a basalt-hosted, low-chloride magmatic-hydrothermal system. Down-hole fluid samples (850–1600 m) from wells in the Theistareykir and Krafla geothermal fields in the Northern Volcanic Zone of Iceland were combined with well-head samples of condensed vapor, cuttings of altered rock, and fresh basalt (being some of the first concentration data for volatile and semi-volatile elements (Sb, Tl, Bi, Cd and As) for this area of Iceland). Results show that the deep fluids are relatively enriched in base metals and (semi)-volatile metals (in particular Te, Hg, Re and Tl) compared to local basalt. We interpret this enrichment in volatile metals to reflect a significant element input from magma degassing. Boiling of this deep fluid results in a well-head fluid composition that is significantly depleted in most elements. This well-head fluid has a distinct elemental signature, including a depletion in Sb that is mirrored in the altered rocks, and a depletion in the base metals that shows their selective sequestration in scale minerals, likely sulphides. As expected, the element content and patterns in surface fluids can thus not be interpreted to directly reflect that of the deep reservoir fluid. The behaviour of elements in Theistareykir and Krafla fluids is consistent, and largely agrees with similar data obtained for the Reykjanes geothermal system in SW Iceland. We therefore posit that our results are representative for this geological setting and indicate a significant magmatic degassing cation input to deep fluids, variably modified by water–rock interaction. Text Iceland PubMed Central (PMC) Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Scientific Reports 12 1 |
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Article Saby, Marion van Hinsberg, Vincent Pinti, Daniele L. Berlo, Kim Gautason, Bjarni Sigurðardóttir, Ásgerður Brown, Kevin Rocher, Océane The behaviour of metals in deep fluids of NE Iceland |
topic_facet |
Article |
description |
In this contribution, we present some of the first data on the elemental signature of deep crustal fluids in a basalt-hosted, low-chloride magmatic-hydrothermal system. Down-hole fluid samples (850–1600 m) from wells in the Theistareykir and Krafla geothermal fields in the Northern Volcanic Zone of Iceland were combined with well-head samples of condensed vapor, cuttings of altered rock, and fresh basalt (being some of the first concentration data for volatile and semi-volatile elements (Sb, Tl, Bi, Cd and As) for this area of Iceland). Results show that the deep fluids are relatively enriched in base metals and (semi)-volatile metals (in particular Te, Hg, Re and Tl) compared to local basalt. We interpret this enrichment in volatile metals to reflect a significant element input from magma degassing. Boiling of this deep fluid results in a well-head fluid composition that is significantly depleted in most elements. This well-head fluid has a distinct elemental signature, including a depletion in Sb that is mirrored in the altered rocks, and a depletion in the base metals that shows their selective sequestration in scale minerals, likely sulphides. As expected, the element content and patterns in surface fluids can thus not be interpreted to directly reflect that of the deep reservoir fluid. The behaviour of elements in Theistareykir and Krafla fluids is consistent, and largely agrees with similar data obtained for the Reykjanes geothermal system in SW Iceland. We therefore posit that our results are representative for this geological setting and indicate a significant magmatic degassing cation input to deep fluids, variably modified by water–rock interaction. |
format |
Text |
author |
Saby, Marion van Hinsberg, Vincent Pinti, Daniele L. Berlo, Kim Gautason, Bjarni Sigurðardóttir, Ásgerður Brown, Kevin Rocher, Océane |
author_facet |
Saby, Marion van Hinsberg, Vincent Pinti, Daniele L. Berlo, Kim Gautason, Bjarni Sigurðardóttir, Ásgerður Brown, Kevin Rocher, Océane |
author_sort |
Saby, Marion |
title |
The behaviour of metals in deep fluids of NE Iceland |
title_short |
The behaviour of metals in deep fluids of NE Iceland |
title_full |
The behaviour of metals in deep fluids of NE Iceland |
title_fullStr |
The behaviour of metals in deep fluids of NE Iceland |
title_full_unstemmed |
The behaviour of metals in deep fluids of NE Iceland |
title_sort |
behaviour of metals in deep fluids of ne iceland |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9763496/ http://www.ncbi.nlm.nih.gov/pubmed/36536021 https://doi.org/10.1038/s41598-022-26028-x |
long_lat |
ENVELOPE(-16.747,-16.747,65.713,65.713) ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Krafla Reykjanes |
geographic_facet |
Krafla Reykjanes |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9763496/ http://www.ncbi.nlm.nih.gov/pubmed/36536021 http://dx.doi.org/10.1038/s41598-022-26028-x |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-022-26028-x |
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Scientific Reports |
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12 |
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