Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland
International audience This study presents rhenium (Re) and osmium (Os) elemental and isotope data for macroalgae, dissolved load, and bed load from Icelandic coastal and/or river waters, an environment adjacent to predominantly basaltic terrains, ranging in age from historic to ~12 Ma. Both the Re...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://hal.uca.fr/hal-01876957 https://hal.uca.fr/hal-01876957/document https://hal.uca.fr/hal-01876957/file/2018JG004492.pdf https://doi.org/10.1029/2018JG004492 |
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ftunivlyon:oai:HAL:hal-01876957v1 2023-06-11T04:13:13+02:00 Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland Sproson, Adam Selby, David Gannoun, Abdelmouchine Burton, Kevin Dellinger, Mathieu Lloyd, Jeremy Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) Department of Earth Sciences Durham Durham University Department of Earth Sciences USC Los Angeles University of Southern California (USC) 2018 https://hal.uca.fr/hal-01876957 https://hal.uca.fr/hal-01876957/document https://hal.uca.fr/hal-01876957/file/2018JG004492.pdf https://doi.org/10.1029/2018JG004492 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JG004492 hal-01876957 https://hal.uca.fr/hal-01876957 https://hal.uca.fr/hal-01876957/document https://hal.uca.fr/hal-01876957/file/2018JG004492.pdf doi:10.1029/2018JG004492 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-8953 Journal of Geophysical Research: Biogeosciences https://hal.uca.fr/hal-01876957 Journal of Geophysical Research: Biogeosciences, 2018, ⟨10.1029/2018JG004492⟩ [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2018 ftunivlyon https://doi.org/10.1029/2018JG004492 2023-05-03T16:39:23Z International audience This study presents rhenium (Re) and osmium (Os) elemental and isotope data for macroalgae, dissolved load, and bed load from Icelandic coastal and/or river waters, an environment adjacent to predominantly basaltic terrains, ranging in age from historic to ~12 Ma. Both the Re (0.1 to 88.4 ppb) and Os (3.3 to 254.5 ppt) abundance in macroalgae are shown to be primarily controlled by uptake from the dissolved load of local seawater and are largely dependent on the relative influence of local freshwater inputs. Incorporation of Re and Os into macroalgae appears to be complicated by additional Re and Os uptake from the bed load. The 187Os/188Os (0.16 to 0.99) composition of macroalgae is highly variable and is explained in terms of an unradiogenic 187Os/188Os contribution from rivers draining younger basaltic catchments that have undergone congruent weathering (and/or hydrothermal input) and a radiogenic 187Os/188Os contribution from two distinct sources: rivers draining older catchments that have undergone incongruent weathering of radiogenic primary basaltic minerals and North Atlantic seawater. The 187Re/188Os composition (~65 to 40,320) of macroalgae traces that of water, with higher values associated with higher salinity waters, but far exceeds the 187Re/188Os of water due to the preferential uptake of Re over Os by macroalgae in areas of high dissolved and/or bed load Re abundances. This study substantiates the utility of macroalgae as a proxy for the long‐term (months to years) average 187Os/188Os composition of seawater, which holds the potential to elucidate a range of Earth system and anthropogenic processes. Article in Journal/Newspaper Iceland North Atlantic Université de Lyon: HAL Journal of Geophysical Research: Biogeosciences 123 9 2791 2806 |
institution |
Open Polar |
collection |
Université de Lyon: HAL |
op_collection_id |
ftunivlyon |
language |
English |
topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU]Sciences of the Universe [physics] Sproson, Adam Selby, David Gannoun, Abdelmouchine Burton, Kevin Dellinger, Mathieu Lloyd, Jeremy Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU]Sciences of the Universe [physics] |
description |
International audience This study presents rhenium (Re) and osmium (Os) elemental and isotope data for macroalgae, dissolved load, and bed load from Icelandic coastal and/or river waters, an environment adjacent to predominantly basaltic terrains, ranging in age from historic to ~12 Ma. Both the Re (0.1 to 88.4 ppb) and Os (3.3 to 254.5 ppt) abundance in macroalgae are shown to be primarily controlled by uptake from the dissolved load of local seawater and are largely dependent on the relative influence of local freshwater inputs. Incorporation of Re and Os into macroalgae appears to be complicated by additional Re and Os uptake from the bed load. The 187Os/188Os (0.16 to 0.99) composition of macroalgae is highly variable and is explained in terms of an unradiogenic 187Os/188Os contribution from rivers draining younger basaltic catchments that have undergone congruent weathering (and/or hydrothermal input) and a radiogenic 187Os/188Os contribution from two distinct sources: rivers draining older catchments that have undergone incongruent weathering of radiogenic primary basaltic minerals and North Atlantic seawater. The 187Re/188Os composition (~65 to 40,320) of macroalgae traces that of water, with higher values associated with higher salinity waters, but far exceeds the 187Re/188Os of water due to the preferential uptake of Re over Os by macroalgae in areas of high dissolved and/or bed load Re abundances. This study substantiates the utility of macroalgae as a proxy for the long‐term (months to years) average 187Os/188Os composition of seawater, which holds the potential to elucidate a range of Earth system and anthropogenic processes. |
author2 |
Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) Department of Earth Sciences Durham Durham University Department of Earth Sciences USC Los Angeles University of Southern California (USC) |
format |
Article in Journal/Newspaper |
author |
Sproson, Adam Selby, David Gannoun, Abdelmouchine Burton, Kevin Dellinger, Mathieu Lloyd, Jeremy |
author_facet |
Sproson, Adam Selby, David Gannoun, Abdelmouchine Burton, Kevin Dellinger, Mathieu Lloyd, Jeremy |
author_sort |
Sproson, Adam |
title |
Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
title_short |
Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
title_full |
Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
title_fullStr |
Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
title_full_unstemmed |
Tracing the impact of coastal water geochemistry on the Re-Os systematics of macroalgae: Insights from the basaltic terrain of Iceland |
title_sort |
tracing the impact of coastal water geochemistry on the re-os systematics of macroalgae: insights from the basaltic terrain of iceland |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.uca.fr/hal-01876957 https://hal.uca.fr/hal-01876957/document https://hal.uca.fr/hal-01876957/file/2018JG004492.pdf https://doi.org/10.1029/2018JG004492 |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
ISSN: 2169-8953 Journal of Geophysical Research: Biogeosciences https://hal.uca.fr/hal-01876957 Journal of Geophysical Research: Biogeosciences, 2018, ⟨10.1029/2018JG004492⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JG004492 hal-01876957 https://hal.uca.fr/hal-01876957 https://hal.uca.fr/hal-01876957/document https://hal.uca.fr/hal-01876957/file/2018JG004492.pdf doi:10.1029/2018JG004492 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018JG004492 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
123 |
container_issue |
9 |
container_start_page |
2791 |
op_container_end_page |
2806 |
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1768389969203691520 |