Nd isotopes in deep-sea corals in the North-eastern Atlantic
Neodymium (Nd) concentrations and isotopic signatures of living and fossil deep-sea coral species Lophelia pertusa, Desmophyllum dianthus and Madrepora oculata from the northeast Atlantic Ocean have been investigated in order to test the ability of deep-sea corals to reconstruct the seawater Nd isot...
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Online Access: | https://oceanrep.geomar.de/id/eprint/29711/ https://oceanrep.geomar.de/id/eprint/29711/1/Copard.pdf https://doi.org/10.1016/j.quascirev.2010.05.025 |
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ftoceanrep:oai:oceanrep.geomar.de:29711 2023-05-15T17:08:44+02:00 Nd isotopes in deep-sea corals in the North-eastern Atlantic Copard, Kevin Colin, Christophe Douville, Eric Freiwald, Andre Gudmundsson, Gudmundur De Mol, Ben Frank, Norbert 2010 text https://oceanrep.geomar.de/id/eprint/29711/ https://oceanrep.geomar.de/id/eprint/29711/1/Copard.pdf https://doi.org/10.1016/j.quascirev.2010.05.025 en eng Elsevier https://oceanrep.geomar.de/id/eprint/29711/1/Copard.pdf Copard, K., Colin, C., Douville, E., Freiwald, A., Gudmundsson, G., De Mol, B. and Frank, N. (2010) Nd isotopes in deep-sea corals in the North-eastern Atlantic. Quaternary Science Reviews, 29 (19-20). pp. 2499-2508. DOI 10.1016/j.quascirev.2010.05.025 <https://doi.org/10.1016/j.quascirev.2010.05.025>. doi:10.1016/j.quascirev.2010.05.025 Article PeerReviewed 2010 ftoceanrep https://doi.org/10.1016/j.quascirev.2010.05.025 2023-04-07T15:20:44Z Neodymium (Nd) concentrations and isotopic signatures of living and fossil deep-sea coral species Lophelia pertusa, Desmophyllum dianthus and Madrepora oculata from the northeast Atlantic Ocean have been investigated in order to test the ability of deep-sea corals to reconstruct the seawater Nd isotopic signature and past changes of ocean circulation in the eastern North Atlantic. Small quantities of Nd—less than 45 ng/g—are incorporated into the aragonite skeleton of living deep-sea corals that dwell at upper intermediate depths throughout the Northeast Atlantic. Rigorous cleaning techniques are needed in order to avoid Nd contamination from manganese-oxide and iron hydroxide coatings. Moreover, Nd isotopic compositions have been measured using thermal ionization mass spectrometry (TIMS) by Nd-oxide method. Our data indicate that the isotopic signatures of modern corals are similar to those of adjacent water masses, implying that deep-sea corals can serve as an archive of the seawater Nd isotopic compositions in the past. The first results from few fully-cleaned fossils corals collected within the Porcupine Seabight and the southwest Rockall Bank reveal significantly higher εNd for corals dated between 150 ± 40 and 3060 ± 90 yrs than those of the living corals located in similar areas. This suggests rapid hydrological variations along the eastern margin of the North Atlantic Ocean at intermediate water depth with higher contribution of the Mediterranean Overflow Waters (MOW) or other temperate Atlantic mid-depth water masses (ENACW or NAC) in the past. Article in Journal/Newspaper Lophelia pertusa North Atlantic Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) Rockall Bank ENVELOPE(-16.519,-16.519,55.821,55.821) Quaternary Science Reviews 29 19-20 2499 2508 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Neodymium (Nd) concentrations and isotopic signatures of living and fossil deep-sea coral species Lophelia pertusa, Desmophyllum dianthus and Madrepora oculata from the northeast Atlantic Ocean have been investigated in order to test the ability of deep-sea corals to reconstruct the seawater Nd isotopic signature and past changes of ocean circulation in the eastern North Atlantic. Small quantities of Nd—less than 45 ng/g—are incorporated into the aragonite skeleton of living deep-sea corals that dwell at upper intermediate depths throughout the Northeast Atlantic. Rigorous cleaning techniques are needed in order to avoid Nd contamination from manganese-oxide and iron hydroxide coatings. Moreover, Nd isotopic compositions have been measured using thermal ionization mass spectrometry (TIMS) by Nd-oxide method. Our data indicate that the isotopic signatures of modern corals are similar to those of adjacent water masses, implying that deep-sea corals can serve as an archive of the seawater Nd isotopic compositions in the past. The first results from few fully-cleaned fossils corals collected within the Porcupine Seabight and the southwest Rockall Bank reveal significantly higher εNd for corals dated between 150 ± 40 and 3060 ± 90 yrs than those of the living corals located in similar areas. This suggests rapid hydrological variations along the eastern margin of the North Atlantic Ocean at intermediate water depth with higher contribution of the Mediterranean Overflow Waters (MOW) or other temperate Atlantic mid-depth water masses (ENACW or NAC) in the past. |
format |
Article in Journal/Newspaper |
author |
Copard, Kevin Colin, Christophe Douville, Eric Freiwald, Andre Gudmundsson, Gudmundur De Mol, Ben Frank, Norbert |
spellingShingle |
Copard, Kevin Colin, Christophe Douville, Eric Freiwald, Andre Gudmundsson, Gudmundur De Mol, Ben Frank, Norbert Nd isotopes in deep-sea corals in the North-eastern Atlantic |
author_facet |
Copard, Kevin Colin, Christophe Douville, Eric Freiwald, Andre Gudmundsson, Gudmundur De Mol, Ben Frank, Norbert |
author_sort |
Copard, Kevin |
title |
Nd isotopes in deep-sea corals in the North-eastern Atlantic |
title_short |
Nd isotopes in deep-sea corals in the North-eastern Atlantic |
title_full |
Nd isotopes in deep-sea corals in the North-eastern Atlantic |
title_fullStr |
Nd isotopes in deep-sea corals in the North-eastern Atlantic |
title_full_unstemmed |
Nd isotopes in deep-sea corals in the North-eastern Atlantic |
title_sort |
nd isotopes in deep-sea corals in the north-eastern atlantic |
publisher |
Elsevier |
publishDate |
2010 |
url |
https://oceanrep.geomar.de/id/eprint/29711/ https://oceanrep.geomar.de/id/eprint/29711/1/Copard.pdf https://doi.org/10.1016/j.quascirev.2010.05.025 |
long_lat |
ENVELOPE(-13.000,-13.000,50.500,50.500) ENVELOPE(-16.519,-16.519,55.821,55.821) |
geographic |
Porcupine Seabight Rockall Bank |
geographic_facet |
Porcupine Seabight Rockall Bank |
genre |
Lophelia pertusa North Atlantic Northeast Atlantic |
genre_facet |
Lophelia pertusa North Atlantic Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/29711/1/Copard.pdf Copard, K., Colin, C., Douville, E., Freiwald, A., Gudmundsson, G., De Mol, B. and Frank, N. (2010) Nd isotopes in deep-sea corals in the North-eastern Atlantic. Quaternary Science Reviews, 29 (19-20). pp. 2499-2508. DOI 10.1016/j.quascirev.2010.05.025 <https://doi.org/10.1016/j.quascirev.2010.05.025>. doi:10.1016/j.quascirev.2010.05.025 |
op_doi |
https://doi.org/10.1016/j.quascirev.2010.05.025 |
container_title |
Quaternary Science Reviews |
container_volume |
29 |
container_issue |
19-20 |
container_start_page |
2499 |
op_container_end_page |
2508 |
_version_ |
1766064592141680640 |