Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes

Abstract Hydrogen isotopes have been widely used as powerful tracers to understand the origin of terrestrial water and the water circulation between the surface and the deep interior of the Earth. However, further quantitative understanding is hindered due to a lack of observations about the changes...

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Autores principales:	Takeshi Kuritani, Kenji Shimizu, Takayuki Ushikubo, Qun-Ke Xia, Jia Liu, Mitsuhiro Nakagawa, Hajime Taniuchi, Eiichi Sato, Nobuo Doi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1b0eda490fab477e99288b08783f008d
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spelling	oai:doaj.org-article:1b0eda490fab477e99288b08783f008d2021-12-02T18:14:00ZTracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes10.1038/s41598-021-98307-y2045-2322https://doaj.org/article/1b0eda490fab477e99288b08783f008d2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98307-yhttps://doaj.org/toc/2045-2322Abstract Hydrogen isotopes have been widely used as powerful tracers to understand the origin of terrestrial water and the water circulation between the surface and the deep interior of the Earth. However, further quantitative understanding is hindered due to a lack of observations about the changes in D/H ratios of a slab during subduction. Here, we report hydrogen isotope data of olivine-hosted melt inclusions from active volcanoes with variable depths (90‒550 km) to the subducting Pacific slab. The results show that the D/H ratio of the slab fluid at the volcanic front is lower than that of the slab fluid just behind the volcanic front. This demonstrates that fluids with different D/H ratios were released from the crust and the underlying peridotite portions of the slab around the volcanic front. The results also show that the D/H ratios of slab fluids do not change significantly with slab depths from 300 to 550 km, which demonstrates that slab dehydration did not occur significantly beyond the arc. Our estimated δD‰ value for the slab materials that accumulated in the mantle transition zone is > − 90‰, a value which is significantly higher than previous estimates.Takeshi KuritaniKenji ShimizuTakayuki UshikuboQun-Ke XiaJia LiuMitsuhiro NakagawaHajime TaniuchiEiichi SatoNobuo DoiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takeshi Kuritani Kenji Shimizu Takayuki Ushikubo Qun-Ke Xia Jia Liu Mitsuhiro Nakagawa Hajime Taniuchi Eiichi Sato Nobuo Doi Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
description	Abstract Hydrogen isotopes have been widely used as powerful tracers to understand the origin of terrestrial water and the water circulation between the surface and the deep interior of the Earth. However, further quantitative understanding is hindered due to a lack of observations about the changes in D/H ratios of a slab during subduction. Here, we report hydrogen isotope data of olivine-hosted melt inclusions from active volcanoes with variable depths (90‒550 km) to the subducting Pacific slab. The results show that the D/H ratio of the slab fluid at the volcanic front is lower than that of the slab fluid just behind the volcanic front. This demonstrates that fluids with different D/H ratios were released from the crust and the underlying peridotite portions of the slab around the volcanic front. The results also show that the D/H ratios of slab fluids do not change significantly with slab depths from 300 to 550 km, which demonstrates that slab dehydration did not occur significantly beyond the arc. Our estimated δD‰ value for the slab materials that accumulated in the mantle transition zone is > − 90‰, a value which is significantly higher than previous estimates.
format	article
author	Takeshi Kuritani Kenji Shimizu Takayuki Ushikubo Qun-Ke Xia Jia Liu Mitsuhiro Nakagawa Hajime Taniuchi Eiichi Sato Nobuo Doi
author_facet	Takeshi Kuritani Kenji Shimizu Takayuki Ushikubo Qun-Ke Xia Jia Liu Mitsuhiro Nakagawa Hajime Taniuchi Eiichi Sato Nobuo Doi
author_sort	Takeshi Kuritani
title	Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
title_short	Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
title_full	Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
title_fullStr	Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
title_full_unstemmed	Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes
title_sort	tracing the subducting pacific slab to the mantle transition zone with hydrogen isotopes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1b0eda490fab477e99288b08783f008d
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Tracing the subducting Pacific slab to the mantle transition zone with hydrogen isotopes

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