The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir
In this paper, we re-investigate the isotopic composition of hydrogen in MORB and the possible effects of contamination on delta D and water content. A suite of 40 N-MORB from the Pacific-Antarctic ridge, far from any hotspot, was analyzed for chlorine content by electron microprobe and for water co...
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ftarchimer:oai:archimer.ifremer.fr:28045 2023-05-15T13:50:49+02:00 The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir Clog, Matthieu Aubaud, Cyril Cartigny, Pierre Dosso, Laure 2013-11 application/pdf https://archimer.ifremer.fr/doc/00169/28045/27274.pdf https://doi.org/10.1016/j.epsl.2013.08.043 https://archimer.ifremer.fr/doc/00169/28045/ eng eng Elsevier Science Bv https://archimer.ifremer.fr/doc/00169/28045/27274.pdf doi:10.1016/j.epsl.2013.08.043 https://archimer.ifremer.fr/doc/00169/28045/ 2013 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Earth And Planetary Science Letters (0012-821X) (Elsevier Science Bv), 2013-11 , Vol. 381 , P. 156-165 hydrogen isotopes mantle geochemistry mantle water text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1016/j.epsl.2013.08.043 2021-09-23T20:23:49Z In this paper, we re-investigate the isotopic composition of hydrogen in MORB and the possible effects of contamination on delta D and water content. A suite of 40 N-MORB from the Pacific-Antarctic ridge, far from any hotspot, was analyzed for chlorine content by electron microprobe and for water content and delta D with silica tubes. Cl concentrations (from 29 to 2400 ppm) indicate widespread contamination, more intense with faster spreading rates, while water contents (from 840 to 7800 ppm) are mainly controlled by igneous processes. delta D values range from -76 to -48 parts per thousand, with an average value of -61 parts per thousand. The lack of correlation between Cl content and either H2O/Ce or SD indicate that contamination has a negligible effect on delta D for our samples, which is therefore characteristic of the mantle below the Pacific-Antarctic ridge. We suggest that the 20 parts per thousand lower delta D value reported for the North Pacific and North Atlantic is highly unlikely from geodynamical arguments. We propose that the convecting mantle is characterized by a delta D of -60+/-5 parts per thousand, as supported by the most recent data from North Atlantic N-MORB. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Pacific Earth and Planetary Science Letters 381 156 165 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
hydrogen isotopes mantle geochemistry mantle water |
spellingShingle |
hydrogen isotopes mantle geochemistry mantle water Clog, Matthieu Aubaud, Cyril Cartigny, Pierre Dosso, Laure The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
topic_facet |
hydrogen isotopes mantle geochemistry mantle water |
description |
In this paper, we re-investigate the isotopic composition of hydrogen in MORB and the possible effects of contamination on delta D and water content. A suite of 40 N-MORB from the Pacific-Antarctic ridge, far from any hotspot, was analyzed for chlorine content by electron microprobe and for water content and delta D with silica tubes. Cl concentrations (from 29 to 2400 ppm) indicate widespread contamination, more intense with faster spreading rates, while water contents (from 840 to 7800 ppm) are mainly controlled by igneous processes. delta D values range from -76 to -48 parts per thousand, with an average value of -61 parts per thousand. The lack of correlation between Cl content and either H2O/Ce or SD indicate that contamination has a negligible effect on delta D for our samples, which is therefore characteristic of the mantle below the Pacific-Antarctic ridge. We suggest that the 20 parts per thousand lower delta D value reported for the North Pacific and North Atlantic is highly unlikely from geodynamical arguments. We propose that the convecting mantle is characterized by a delta D of -60+/-5 parts per thousand, as supported by the most recent data from North Atlantic N-MORB. |
format |
Article in Journal/Newspaper |
author |
Clog, Matthieu Aubaud, Cyril Cartigny, Pierre Dosso, Laure |
author_facet |
Clog, Matthieu Aubaud, Cyril Cartigny, Pierre Dosso, Laure |
author_sort |
Clog, Matthieu |
title |
The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
title_short |
The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
title_full |
The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
title_fullStr |
The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
title_full_unstemmed |
The hydrogen isotopic composition and water content of southern Pacific MORB: A reassessment of the D/H ratio of the depleted mantle reservoir |
title_sort |
hydrogen isotopic composition and water content of southern pacific morb: a reassessment of the d/h ratio of the depleted mantle reservoir |
publisher |
Elsevier Science Bv |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00169/28045/27274.pdf https://doi.org/10.1016/j.epsl.2013.08.043 https://archimer.ifremer.fr/doc/00169/28045/ |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_source |
Earth And Planetary Science Letters (0012-821X) (Elsevier Science Bv), 2013-11 , Vol. 381 , P. 156-165 |
op_relation |
https://archimer.ifremer.fr/doc/00169/28045/27274.pdf doi:10.1016/j.epsl.2013.08.043 https://archimer.ifremer.fr/doc/00169/28045/ |
op_rights |
2013 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.epsl.2013.08.043 |
container_title |
Earth and Planetary Science Letters |
container_volume |
381 |
container_start_page |
156 |
op_container_end_page |
165 |
_version_ |
1766254112307937280 |