Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals
We present the neodymium isotopic composition (epsilon-Nd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as epsilon-Nd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between 280 and 4...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.880303 2023-05-15T17:08:50+02:00 Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe MEDIAN LATITUDE: 37.743528 * MEDIAN LONGITUDE: 1.769136 * SOUTH-BOUND LATITUDE: 35.350667 * WEST-BOUND LONGITUDE: -3.556500 * NORTH-BOUND LATITUDE: 38.703000 * EAST-BOUND LONGITUDE: 8.912500 * DATE/TIME START: 2009-06-05T08:49:00 * DATE/TIME END: 2009-06-07T14:03:00 2017-09-04 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.880303 https://doi.org/10.1594/PANGAEA.880303 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.880303 https://doi.org/10.1594/PANGAEA.880303 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Dubois-Dauphin, Quentin; Montagna, Paolo; Siani, Giuseppe; Douville, Eric; Wienberg, Claudia; Hebbeln, Dierk; Liu, Zhifei; Kallel, Nejib; Dapoigny, Arnaud; Revel, Marie; Pons-Branchu, Edwige; Taviani, Marco; Colin, Christophe (2017): Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals. Climate of the Past, 13(1), 17-37, https://doi.org/10.5194/cp-13-17-2017 Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.880303 https://doi.org/10.5194/cp-13-17-2017 2023-01-20T07:34:00Z We present the neodymium isotopic composition (epsilon-Nd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as epsilon-Nd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between 280 and 442 m water depth in the Alboran Sea and at 414 m depth in the southern Sardinian continental margin. The aim is to constrain hydrological variations at intermediate depths in the western Mediterranean Sea during the last 20 kyr. Planktonic (Globigerina bulloides) and benthic (Cibicidoides pachyderma) foraminifera from the Balearic Sea were also analyzed for stable oxygen (d18O) and carbon (d13C) isotopes. The foraminiferal and coral epsilon-Nd values from the Balearic and Alboran seas are comparable over the last ~13 kyr, with mean values of -8.94 ± 0.26 (1 Sigma; n = 24) and -8.91 ± 0.18 (1 Sigma; n = 25), respectively. Before 13 ka BP, the foraminiferal epsilon-Nd values are slightly lower (-9.28 ± 0.15) and tend to reflect higher mixing between intermediate and deep waters, which are characterized by more unradiogenic epsilon-Nd values. The slight epsilon-Nd increase after 13 ka BP is associated with a decoupling in the benthic foraminiferal d13C composition between intermediate and deeper depths, which started at ~16 ka BP. This suggests an earlier stratification of the water masses and a subsequent reduced contribution of unradiogenic epsilon-Nd from deep waters. The CWC from the Sardinia Channel show a much larger scatter of epsilon-Nd values, from -8.66 ± 0.30 to 5.99 ± 0.50, and a lower average (-7.31 ± 0.73; n = 19) compared to the CWC and foraminifera from the Alboran and Balearic seas, indicative of intermediate waters sourced from the Levantine basin. At the time of sapropel S1 deposition (10.2 to 6.4 ka), the epsilon-Nd values of the Sardinian CWC become more unradiogenic (-8.38 ± 0.47; n = 3 at ~8.7 ka BP), suggesting a significant contribution of intermediate waters originated from the western basin. We ... Dataset Lophelia pertusa Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Western Basin ENVELOPE(-3.556500,8.912500,38.703000,35.350667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
We present the neodymium isotopic composition (epsilon-Nd) of mixed planktonic foraminifera species from a sediment core collected at 622 m water depth in the Balearic Sea, as well as epsilon-Nd of scleractinian cold-water corals (CWC; Madrepora oculata, Lophelia pertusa) retrieved between 280 and 442 m water depth in the Alboran Sea and at 414 m depth in the southern Sardinian continental margin. The aim is to constrain hydrological variations at intermediate depths in the western Mediterranean Sea during the last 20 kyr. Planktonic (Globigerina bulloides) and benthic (Cibicidoides pachyderma) foraminifera from the Balearic Sea were also analyzed for stable oxygen (d18O) and carbon (d13C) isotopes. The foraminiferal and coral epsilon-Nd values from the Balearic and Alboran seas are comparable over the last ~13 kyr, with mean values of -8.94 ± 0.26 (1 Sigma; n = 24) and -8.91 ± 0.18 (1 Sigma; n = 25), respectively. Before 13 ka BP, the foraminiferal epsilon-Nd values are slightly lower (-9.28 ± 0.15) and tend to reflect higher mixing between intermediate and deep waters, which are characterized by more unradiogenic epsilon-Nd values. The slight epsilon-Nd increase after 13 ka BP is associated with a decoupling in the benthic foraminiferal d13C composition between intermediate and deeper depths, which started at ~16 ka BP. This suggests an earlier stratification of the water masses and a subsequent reduced contribution of unradiogenic epsilon-Nd from deep waters. The CWC from the Sardinia Channel show a much larger scatter of epsilon-Nd values, from -8.66 ± 0.30 to 5.99 ± 0.50, and a lower average (-7.31 ± 0.73; n = 19) compared to the CWC and foraminifera from the Alboran and Balearic seas, indicative of intermediate waters sourced from the Levantine basin. At the time of sapropel S1 deposition (10.2 to 6.4 ka), the epsilon-Nd values of the Sardinian CWC become more unradiogenic (-8.38 ± 0.47; n = 3 at ~8.7 ka BP), suggesting a significant contribution of intermediate waters originated from the western basin. We ... |
format |
Dataset |
author |
Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe |
spellingShingle |
Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
author_facet |
Dubois-Dauphin, Quentin Montagna, Paolo Siani, Giuseppe Douville, Eric Wienberg, Claudia Hebbeln, Dierk Liu, Zhifei Kallel, Nejib Dapoigny, Arnaud Revel, Marie Pons-Branchu, Edwige Taviani, Marco Colin, Christophe |
author_sort |
Dubois-Dauphin, Quentin |
title |
Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
title_short |
Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
title_full |
Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
title_fullStr |
Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
title_full_unstemmed |
Neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-Nd of scleractinian cold-water corals |
title_sort |
neodymium isotopic composition of mixed planktonic foraminifera species and epsilon-nd of scleractinian cold-water corals |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.880303 https://doi.org/10.1594/PANGAEA.880303 |
op_coverage |
MEDIAN LATITUDE: 37.743528 * MEDIAN LONGITUDE: 1.769136 * SOUTH-BOUND LATITUDE: 35.350667 * WEST-BOUND LONGITUDE: -3.556500 * NORTH-BOUND LATITUDE: 38.703000 * EAST-BOUND LONGITUDE: 8.912500 * DATE/TIME START: 2009-06-05T08:49:00 * DATE/TIME END: 2009-06-07T14:03:00 |
long_lat |
ENVELOPE(-3.556500,8.912500,38.703000,35.350667) |
geographic |
Western Basin |
geographic_facet |
Western Basin |
genre |
Lophelia pertusa Planktonic foraminifera |
genre_facet |
Lophelia pertusa Planktonic foraminifera |
op_source |
Supplement to: Dubois-Dauphin, Quentin; Montagna, Paolo; Siani, Giuseppe; Douville, Eric; Wienberg, Claudia; Hebbeln, Dierk; Liu, Zhifei; Kallel, Nejib; Dapoigny, Arnaud; Revel, Marie; Pons-Branchu, Edwige; Taviani, Marco; Colin, Christophe (2017): Hydrological variations of the intermediate water masses of the western Mediterranean Sea during the past 20 ka inferred from neodymium isotopic composition in foraminifera and cold-water corals. Climate of the Past, 13(1), 17-37, https://doi.org/10.5194/cp-13-17-2017 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.880303 https://doi.org/10.1594/PANGAEA.880303 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.880303 https://doi.org/10.5194/cp-13-17-2017 |
_version_ |
1766064708617502720 |