Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013
Sm-Nd concentrations and Nd isotopes were investigated in the fine fraction of two Labrador Sea cores to reconstruct the deep circulation patterns through changes in sedimentary supply since the last glacial stage. Three sources are involved: the North American Shield, Palaeozoic rocks from northeas...
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Format: | Dataset |
Language: | English |
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PANGAEA
1999
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.856640 https://doi.org/10.1594/PANGAEA.856640 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.856640 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age 14C milieu/reservoir corrected (-400 yr) dated mineral Calendar age Depth bottom/max sediment/rock top/min HU90-13-013 HUD90/13 Hudson Marine isotopic stage Neodymium Neodymium-143/Neodymium-144 ratio error Northwest Atlantic PC Piston corer Samarium Samarium-147/Neodymium-144 ratio ε-Neodymium |
spellingShingle |
Age 14C milieu/reservoir corrected (-400 yr) dated mineral Calendar age Depth bottom/max sediment/rock top/min HU90-13-013 HUD90/13 Hudson Marine isotopic stage Neodymium Neodymium-143/Neodymium-144 ratio error Northwest Atlantic PC Piston corer Samarium Samarium-147/Neodymium-144 ratio ε-Neodymium Fagel, Nathalie Innocent, Christophe Stevenson, Ross K Hillaire-Marcel, Claude Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
topic_facet |
Age 14C milieu/reservoir corrected (-400 yr) dated mineral Calendar age Depth bottom/max sediment/rock top/min HU90-13-013 HUD90/13 Hudson Marine isotopic stage Neodymium Neodymium-143/Neodymium-144 ratio error Northwest Atlantic PC Piston corer Samarium Samarium-147/Neodymium-144 ratio ε-Neodymium |
description |
Sm-Nd concentrations and Nd isotopes were investigated in the fine fraction of two Labrador Sea cores to reconstruct the deep circulation patterns through changes in sedimentary supply since the last glacial stage. Three sources are involved: the North American Shield, Palaeozoic rocks from northeastern Greenland, and mid-Atlantic volcanism. The variable input of these sources provides constraints on the relative sedimentary supply, in conjunction with inception of deep currents. During the last glacial stage a persistent but sluggish current occurred inside the Labrador Basin. An increasing discharge of volcanic material driven by the North East Atlantic Deep Water is documented since 14.3 kyr, signaling the setup of a modern-like deep circulation pattern throughout the Labrador, Irminger, and Iceland basins. During the last deglacial stage the isotopic record was punctually influenced by erosion processes related mainly to ice-sheet instabilities, especially 11.4, 10.2, and 9.2 kyr ago. |
format |
Dataset |
author |
Fagel, Nathalie Innocent, Christophe Stevenson, Ross K Hillaire-Marcel, Claude |
author_facet |
Fagel, Nathalie Innocent, Christophe Stevenson, Ross K Hillaire-Marcel, Claude |
author_sort |
Fagel, Nathalie |
title |
Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
title_short |
Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
title_full |
Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
title_fullStr |
Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
title_full_unstemmed |
Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 |
title_sort |
nd and sm content and isotopic composition of the carbonate-free clay fraction of sediment core hu90-013-013 |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.856640 https://doi.org/10.1594/PANGAEA.856640 |
op_coverage |
LATITUDE: 58.209800 * LONGITUDE: -48.373300 * MINIMUM DEPTH, sediment/rock: 0.000 m * MAXIMUM DEPTH, sediment/rock: 5.295 m |
long_lat |
ENVELOPE(-48.373300,-48.373300,58.209800,58.209800) |
genre |
Greenland Ice Sheet Iceland Labrador Sea North East Atlantic Northwest Atlantic |
genre_facet |
Greenland Ice Sheet Iceland Labrador Sea North East Atlantic Northwest Atlantic |
op_source |
Supplement to: Fagel, Nathalie; Innocent, Christophe; Stevenson, Ross K; Hillaire-Marcel, Claude (1999): Deep circulation changes in the Labrador Sea since the Last Glacial Maximum: New constraints from Sm-Nd data on sediments. Paleoceanography, 14(6), 777-788, https://doi.org/10.1029/1999PA900041 |
op_relation |
Innocent, Christophe; Fagel, Nathalie; Stevenson, Ross K; Hillaire-Marcel, Claude (1997): SmNd signature of modern and late Quaternary sediments from the northwest North Atlantic: Implications for deep current changes since the Last Glacial Maximum. Earth and Planetary Science Letters, 146(3-4), 607-625, https://doi.org/10.1016/S0012-821X(96)00251-8 Ben Othman, Dalila; Fourcade, Eric; Allègre, Claude J (1984): Recycling processes in granite-granodiorite complex genesis: the Querigut case studied by NdSr isotope systematics. Earth and Planetary Science Letters, 69(2), 290-300, https://doi.org/10.1016/0012-821X(84)90188-2 Hillaire-Marcel, Claude; de Vernal, Anne; Bilodeau, Guy; Wu, Guoping (1994): Isotope stratigraphy, sedimentation rates, deep circulation, and carbonate events in the Labrador Sea during the last c. 200 ka. Canadian Journal of Earth Science, 31, 63-89 Jacobsen, Stein B; Wasserburg, Gerald J (1980): Sm-Nd isotopic evolution of chondrites. Earth and Planetary Science Letters, 50(1), 139-155, https://doi.org/10.1016/0012-821X(80)90125-9 Stoner, Joseph S; Channell, James E T; Hillaire-Marcel, Claude (1998): A 200 ka geomagnetic chronostratigraphy for the Labrador Sea: Indirect correlation of the sediment record to SPECMAP. Earth and Planetary Science Letters, 159(3-4), 165-181, https://doi.org/10.1016/S0012-821X(98)00069-7 Wasserburg, Gerald J; Jacousen, S W; DePaolo, Donald J; McCulloch, Malcolm T; Wen, Tao (1981): Precise determination of ratios, Sm and Nd isotopic abundances in standard solutions. Geochimica et Cosmochimica Acta, 45(12), 2311-2323, https://doi.org/10.1016/0016-7037(81)90085-5 https://doi.pangaea.de/10.1594/PANGAEA.856640 https://doi.org/10.1594/PANGAEA.856640 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85664010.1029/1999PA90004110.1016/S0012-821X(96)00251-810.1016/0012-821X(84)90188-210.1016/0012-821X(80)90125-910.1016/S0012-821X(98)00069-710.1016/0016-7037(81)90085-5 |
_version_ |
1810447517471473664 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.856640 2024-09-15T18:09:55+00:00 Nd and Sm content and isotopic composition of the carbonate-free clay fraction of sediment core HU90-013-013 Fagel, Nathalie Innocent, Christophe Stevenson, Ross K Hillaire-Marcel, Claude LATITUDE: 58.209800 * LONGITUDE: -48.373300 * MINIMUM DEPTH, sediment/rock: 0.000 m * MAXIMUM DEPTH, sediment/rock: 5.295 m 1999 text/tab-separated-values, 555 data points https://doi.pangaea.de/10.1594/PANGAEA.856640 https://doi.org/10.1594/PANGAEA.856640 en eng PANGAEA Innocent, Christophe; Fagel, Nathalie; Stevenson, Ross K; Hillaire-Marcel, Claude (1997): SmNd signature of modern and late Quaternary sediments from the northwest North Atlantic: Implications for deep current changes since the Last Glacial Maximum. Earth and Planetary Science Letters, 146(3-4), 607-625, https://doi.org/10.1016/S0012-821X(96)00251-8 Ben Othman, Dalila; Fourcade, Eric; Allègre, Claude J (1984): Recycling processes in granite-granodiorite complex genesis: the Querigut case studied by NdSr isotope systematics. Earth and Planetary Science Letters, 69(2), 290-300, https://doi.org/10.1016/0012-821X(84)90188-2 Hillaire-Marcel, Claude; de Vernal, Anne; Bilodeau, Guy; Wu, Guoping (1994): Isotope stratigraphy, sedimentation rates, deep circulation, and carbonate events in the Labrador Sea during the last c. 200 ka. Canadian Journal of Earth Science, 31, 63-89 Jacobsen, Stein B; Wasserburg, Gerald J (1980): Sm-Nd isotopic evolution of chondrites. Earth and Planetary Science Letters, 50(1), 139-155, https://doi.org/10.1016/0012-821X(80)90125-9 Stoner, Joseph S; Channell, James E T; Hillaire-Marcel, Claude (1998): A 200 ka geomagnetic chronostratigraphy for the Labrador Sea: Indirect correlation of the sediment record to SPECMAP. Earth and Planetary Science Letters, 159(3-4), 165-181, https://doi.org/10.1016/S0012-821X(98)00069-7 Wasserburg, Gerald J; Jacousen, S W; DePaolo, Donald J; McCulloch, Malcolm T; Wen, Tao (1981): Precise determination of ratios, Sm and Nd isotopic abundances in standard solutions. Geochimica et Cosmochimica Acta, 45(12), 2311-2323, https://doi.org/10.1016/0016-7037(81)90085-5 https://doi.pangaea.de/10.1594/PANGAEA.856640 https://doi.org/10.1594/PANGAEA.856640 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Fagel, Nathalie; Innocent, Christophe; Stevenson, Ross K; Hillaire-Marcel, Claude (1999): Deep circulation changes in the Labrador Sea since the Last Glacial Maximum: New constraints from Sm-Nd data on sediments. Paleoceanography, 14(6), 777-788, https://doi.org/10.1029/1999PA900041 Age 14C milieu/reservoir corrected (-400 yr) dated mineral Calendar age Depth bottom/max sediment/rock top/min HU90-13-013 HUD90/13 Hudson Marine isotopic stage Neodymium Neodymium-143/Neodymium-144 ratio error Northwest Atlantic PC Piston corer Samarium Samarium-147/Neodymium-144 ratio ε-Neodymium dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.85664010.1029/1999PA90004110.1016/S0012-821X(96)00251-810.1016/0012-821X(84)90188-210.1016/0012-821X(80)90125-910.1016/S0012-821X(98)00069-710.1016/0016-7037(81)90085-5 2024-07-24T02:31:33Z Sm-Nd concentrations and Nd isotopes were investigated in the fine fraction of two Labrador Sea cores to reconstruct the deep circulation patterns through changes in sedimentary supply since the last glacial stage. Three sources are involved: the North American Shield, Palaeozoic rocks from northeastern Greenland, and mid-Atlantic volcanism. The variable input of these sources provides constraints on the relative sedimentary supply, in conjunction with inception of deep currents. During the last glacial stage a persistent but sluggish current occurred inside the Labrador Basin. An increasing discharge of volcanic material driven by the North East Atlantic Deep Water is documented since 14.3 kyr, signaling the setup of a modern-like deep circulation pattern throughout the Labrador, Irminger, and Iceland basins. During the last deglacial stage the isotopic record was punctually influenced by erosion processes related mainly to ice-sheet instabilities, especially 11.4, 10.2, and 9.2 kyr ago. Dataset Greenland Ice Sheet Iceland Labrador Sea North East Atlantic Northwest Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-48.373300,-48.373300,58.209800,58.209800) |