Continental shelves as potential resource of rare earth elements

Abstract The results of this study allow the reassessment of the rare earth elements (REE) external cycle. Indeed, the river input to the oceans has relatively flat REE patterns without cerium (Ce) anomalies, whereas oceanic REE patterns exhibit strong negative Ce anomalies and heavy REE enrichment....

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Autores principales:	Olivier Pourret, Johann Tuduri
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5286c7e8a73b4595b472620d4a51662b
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spelling	oai:doaj.org-article:5286c7e8a73b4595b472620d4a51662b2021-12-02T12:32:37ZContinental shelves as potential resource of rare earth elements10.1038/s41598-017-06380-z2045-2322https://doaj.org/article/5286c7e8a73b4595b472620d4a51662b2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06380-zhttps://doaj.org/toc/2045-2322Abstract The results of this study allow the reassessment of the rare earth elements (REE) external cycle. Indeed, the river input to the oceans has relatively flat REE patterns without cerium (Ce) anomalies, whereas oceanic REE patterns exhibit strong negative Ce anomalies and heavy REE enrichment. Indeed, the processes at the origin of seawater REE patterns are commonly thought to occur within the ocean masses themselves. However, the results from the present study illustrate that seawater-like REE patterns already occur in the truly dissolved pool of river input. This leads us to favor a partial or complete removal of the colloidal REE pool during estuarine mixing by coagulation, as previously shown for dissolved humic acids and iron. In this latter case, REE fractionation occurs because colloidal and truly dissolved pools have different REE patterns. Thus, the REE patterns of seawater could be the combination of both intra-oceanic and riverine processes. In this study, we show that the Atlantic continental shelves could be considered potential REE traps, suggesting further that shelf sediments could potentially become a resource for REE, similar to metalliferous deep sea sediments.Olivier PourretJohann TuduriNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Olivier Pourret Johann Tuduri Continental shelves as potential resource of rare earth elements
description	Abstract The results of this study allow the reassessment of the rare earth elements (REE) external cycle. Indeed, the river input to the oceans has relatively flat REE patterns without cerium (Ce) anomalies, whereas oceanic REE patterns exhibit strong negative Ce anomalies and heavy REE enrichment. Indeed, the processes at the origin of seawater REE patterns are commonly thought to occur within the ocean masses themselves. However, the results from the present study illustrate that seawater-like REE patterns already occur in the truly dissolved pool of river input. This leads us to favor a partial or complete removal of the colloidal REE pool during estuarine mixing by coagulation, as previously shown for dissolved humic acids and iron. In this latter case, REE fractionation occurs because colloidal and truly dissolved pools have different REE patterns. Thus, the REE patterns of seawater could be the combination of both intra-oceanic and riverine processes. In this study, we show that the Atlantic continental shelves could be considered potential REE traps, suggesting further that shelf sediments could potentially become a resource for REE, similar to metalliferous deep sea sediments.
format	article
author	Olivier Pourret Johann Tuduri
author_facet	Olivier Pourret Johann Tuduri
author_sort	Olivier Pourret
title	Continental shelves as potential resource of rare earth elements
title_short	Continental shelves as potential resource of rare earth elements
title_full	Continental shelves as potential resource of rare earth elements
title_fullStr	Continental shelves as potential resource of rare earth elements
title_full_unstemmed	Continental shelves as potential resource of rare earth elements
title_sort	continental shelves as potential resource of rare earth elements
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5286c7e8a73b4595b472620d4a51662b
work_keys_str_mv	AT olivierpourret continentalshelvesaspotentialresourceofrareearthelements AT johanntuduri continentalshelvesaspotentialresourceofrareearthelements
_version_	1718394034998738944

Continental shelves as potential resource of rare earth elements

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