Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses
Highlights: • Dominant supply of REEs to Caribbean surface waters originates from the Amazon and Orinoco rivers • Lateral advection controls subsurface REE compositions at intermediate depths, particularly evident for Dy/Er in AAIW • Preferential addition of LREE and MREE to Caribbean deep waters Th...
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Online Access: | https://oceanrep.geomar.de/id/eprint/28203/ https://oceanrep.geomar.de/id/eprint/28203/1/Osborne.pdf https://doi.org/10.1016/j.marchem.2015.03.013 |
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ftoceanrep:oai:oceanrep.geomar.de:28203 2023-05-15T14:12:00+02:00 Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses Osborne, Anne Helen Haley, Brian A. Hathorne, Edmund C. Plancherel, Yves Frank, Martin 2015-12-20 text https://oceanrep.geomar.de/id/eprint/28203/ https://oceanrep.geomar.de/id/eprint/28203/1/Osborne.pdf https://doi.org/10.1016/j.marchem.2015.03.013 en eng Elsevier https://oceanrep.geomar.de/id/eprint/28203/1/Osborne.pdf Osborne, A. H. , Haley, B. A., Hathorne, E. C. , Plancherel, Y. and Frank, M. (2015) Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses. Marine Chemistry, 177, Part 1 . pp. 172-183. DOI 10.1016/j.marchem.2015.03.013 <https://doi.org/10.1016/j.marchem.2015.03.013>. doi:10.1016/j.marchem.2015.03.013 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2015 ftoceanrep https://doi.org/10.1016/j.marchem.2015.03.013 2023-04-07T15:18:21Z Highlights: • Dominant supply of REEs to Caribbean surface waters originates from the Amazon and Orinoco rivers • Lateral advection controls subsurface REE compositions at intermediate depths, particularly evident for Dy/Er in AAIW • Preferential addition of LREE and MREE to Caribbean deep waters The rare earth element (REE) concentrations of full water column profiles from ten stations in the Caribbean, the Gulf of Mexico, and the Florida Straits, as well as of surface waters close to the mouth of the Orinoco River have been analyzed. The results show high concentration of REEs in surface waters, in particular close to the mouth of the Orinoco, and a middle-REE-enrichment that is strongest in the south and east of the study area suggesting that fluvial inputs are the main sources rather than REEs supplied by Saharan dust. The surface waters close to the Orinoco are heavy REE enriched compared to the potential fluvial sources, emphasizing the importance of processes in the estuaries and the surface ocean that preferentially remove light- and middle-REEs. Relatively small heavy-REE enrichments in near-bottom water samples at the mouth of the Orinoco may be the result of preferential release of light REEs from river-transported sediments. The REE patterns of distinct subsurface water masses are largely coherent across the Caribbean basin, suggesting that the lateral transport of preformed compositions is not significantly influenced by vertical processes of scavenging and release. In particular, low Dy/Er molar ratios are associated with Antarctic Intermediate Water and have most likely been advected into the Caribbean from the Southern Ocean. In contrast, deep waters in the Caribbean are enriched in light and middle REEs compared to incoming Upper North Atlantic Deep Water suggesting that release from sinking particles or from sediments is an important source of these REEs in the deep ocean, in particular when deep water residence times are long. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Deep Water North Atlantic Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Dy ENVELOPE(11.369,11.369,64.834,64.834) Southern Ocean Marine Chemistry 177 172 183 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Highlights: • Dominant supply of REEs to Caribbean surface waters originates from the Amazon and Orinoco rivers • Lateral advection controls subsurface REE compositions at intermediate depths, particularly evident for Dy/Er in AAIW • Preferential addition of LREE and MREE to Caribbean deep waters The rare earth element (REE) concentrations of full water column profiles from ten stations in the Caribbean, the Gulf of Mexico, and the Florida Straits, as well as of surface waters close to the mouth of the Orinoco River have been analyzed. The results show high concentration of REEs in surface waters, in particular close to the mouth of the Orinoco, and a middle-REE-enrichment that is strongest in the south and east of the study area suggesting that fluvial inputs are the main sources rather than REEs supplied by Saharan dust. The surface waters close to the Orinoco are heavy REE enriched compared to the potential fluvial sources, emphasizing the importance of processes in the estuaries and the surface ocean that preferentially remove light- and middle-REEs. Relatively small heavy-REE enrichments in near-bottom water samples at the mouth of the Orinoco may be the result of preferential release of light REEs from river-transported sediments. The REE patterns of distinct subsurface water masses are largely coherent across the Caribbean basin, suggesting that the lateral transport of preformed compositions is not significantly influenced by vertical processes of scavenging and release. In particular, low Dy/Er molar ratios are associated with Antarctic Intermediate Water and have most likely been advected into the Caribbean from the Southern Ocean. In contrast, deep waters in the Caribbean are enriched in light and middle REEs compared to incoming Upper North Atlantic Deep Water suggesting that release from sinking particles or from sediments is an important source of these REEs in the deep ocean, in particular when deep water residence times are long. |
format |
Article in Journal/Newspaper |
author |
Osborne, Anne Helen Haley, Brian A. Hathorne, Edmund C. Plancherel, Yves Frank, Martin |
spellingShingle |
Osborne, Anne Helen Haley, Brian A. Hathorne, Edmund C. Plancherel, Yves Frank, Martin Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
author_facet |
Osborne, Anne Helen Haley, Brian A. Hathorne, Edmund C. Plancherel, Yves Frank, Martin |
author_sort |
Osborne, Anne Helen |
title |
Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
title_short |
Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
title_full |
Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
title_fullStr |
Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
title_full_unstemmed |
Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses |
title_sort |
rare earth element distribution in caribbean seawater: continental inputs versus lateral transport of distinct ree compositions in subsurface water masses |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://oceanrep.geomar.de/id/eprint/28203/ https://oceanrep.geomar.de/id/eprint/28203/1/Osborne.pdf https://doi.org/10.1016/j.marchem.2015.03.013 |
long_lat |
ENVELOPE(11.369,11.369,64.834,64.834) |
geographic |
Antarctic Dy Southern Ocean |
geographic_facet |
Antarctic Dy Southern Ocean |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/28203/1/Osborne.pdf Osborne, A. H. , Haley, B. A., Hathorne, E. C. , Plancherel, Y. and Frank, M. (2015) Rare Earth Element distribution in Caribbean seawater: continental inputs versus lateral transport of distinct REE compositions in subsurface water masses. Marine Chemistry, 177, Part 1 . pp. 172-183. DOI 10.1016/j.marchem.2015.03.013 <https://doi.org/10.1016/j.marchem.2015.03.013>. doi:10.1016/j.marchem.2015.03.013 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.marchem.2015.03.013 |
container_title |
Marine Chemistry |
container_volume |
177 |
container_start_page |
172 |
op_container_end_page |
183 |
_version_ |
1766284232645148672 |