(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139)
New data for the direct measurement of the isotopic composition of neodymium in Atlantic Ocean seawater are compared with previous measurements of Pacific Ocean seawater and ferromanganese sediments from major ocean basins. Data for Atlantic seawater are in excellent agreement with Nd isotopic measu...
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1980
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.867452 2023-05-15T17:25:24+02:00 (Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) Piepgras, Donald J Wasserburg, Gerald J LATITUDE: 20.016667 * LONGITUDE: -136.600000 * DATE/TIME START: 1976-11-15T00:00:00 * DATE/TIME END: 1976-11-15T00:00:00 * MINIMUM ELEVATION: -3916.0 m * MAXIMUM ELEVATION: -3916.0 m 1980-11-01 text/tab-separated-values, 20 data points https://doi.pangaea.de/10.1594/PANGAEA.867452 https://doi.org/10.1594/PANGAEA.867452 en eng PANGAEA Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN https://doi.pangaea.de/10.1594/PANGAEA.867452 https://doi.org/10.1594/PANGAEA.867452 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Piepgras, Donald J; Wasserburg, Gerald J (1980): Neodymium isotopic variations in seawater. Earth and Planetary Science Letters, 50(1), 128-138, https://doi.org/10.1016/0012-821X(80)90124-7 Calculated DEPTH sediment/rock Description DISTANCE maximum minimum Dredge DRG Identification L-10-76-HW L1076HW-9A Neodymium-143/Neodymium-144 ratio standard deviation NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS Pacific Ocean Sample code/label Samuel P. Lee Type ε-Neodymium Dataset 1980 ftpangaea https://doi.org/10.1594/PANGAEA.867452 https://doi.org/10.1016/0012-821X(80)90124-7 https://doi.org/10.7289/V52Z13FT https://doi.org/10.7289/V53X84KN 2023-01-20T09:08:00Z New data for the direct measurement of the isotopic composition of neodymium in Atlantic Ocean seawater are compared with previous measurements of Pacific Ocean seawater and ferromanganese sediments from major ocean basins. Data for Atlantic seawater are in excellent agreement with Nd isotopic measurements made on Atlantic ferromanganese sediments and are distinctly different from the observed compositions of Pacific samples. These results clearly demonstrate the existence of distinctive differences in the isotopic composition of Nd in the waters of the major ocean basins and are characteristic of the ocean basin sampled. The average eNd(0) values for the major oceans as determined by data from seawater and ferromanganese sediments are as follows: Atlantic Ocean, eNd(0) = -12 ± 2; Indian Ocean, eNd(0) = -8 ± 2; Pacific Ocean, eNd(0) = -3 ± 2. These values are considerably less than eNd(0) value sources with oceanic mantle affinities indicating that the REE in the oceans are dominated by continental sources. The difference in the absolute abundance of 143Nd between the Pacific and Atlantic Oceans corresponds to ab. 10**6 atoms 143Nd per gram of seawater. The correspondence between the 143Nd/144Nd in seawater and in the associated sediments suggests the possible application of this approach to paleo-oceanography. Distinctive differences in eNd(0) values are observed in the Atlantic Ocean between deep-ocean water associated with North Atlantic Deep Water and near-surface water. This suggests that North Atlantic Deep Water may be relatively well mixed with respect to Nd isotopic composition whereas near-surface water may be quite heterogeneous, reflecting different sources for surface waters relative to deep water. This suggests that it may be possible to distinguish the sources of water masses within an ocean basin on the basis of Nd isotopic composition. The Nd isotopic variations in seawater are used to relate the residence time of Nd and mixing rates between the oceans. Dataset North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Indian Pacific ENVELOPE(-136.600000,-136.600000,20.016667,20.016667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Calculated DEPTH sediment/rock Description DISTANCE maximum minimum Dredge DRG Identification L-10-76-HW L1076HW-9A Neodymium-143/Neodymium-144 ratio standard deviation NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS Pacific Ocean Sample code/label Samuel P. Lee Type ε-Neodymium |
spellingShingle |
Calculated DEPTH sediment/rock Description DISTANCE maximum minimum Dredge DRG Identification L-10-76-HW L1076HW-9A Neodymium-143/Neodymium-144 ratio standard deviation NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS Pacific Ocean Sample code/label Samuel P. Lee Type ε-Neodymium Piepgras, Donald J Wasserburg, Gerald J (Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
topic_facet |
Calculated DEPTH sediment/rock Description DISTANCE maximum minimum Dredge DRG Identification L-10-76-HW L1076HW-9A Neodymium-143/Neodymium-144 ratio standard deviation NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS Pacific Ocean Sample code/label Samuel P. Lee Type ε-Neodymium |
description |
New data for the direct measurement of the isotopic composition of neodymium in Atlantic Ocean seawater are compared with previous measurements of Pacific Ocean seawater and ferromanganese sediments from major ocean basins. Data for Atlantic seawater are in excellent agreement with Nd isotopic measurements made on Atlantic ferromanganese sediments and are distinctly different from the observed compositions of Pacific samples. These results clearly demonstrate the existence of distinctive differences in the isotopic composition of Nd in the waters of the major ocean basins and are characteristic of the ocean basin sampled. The average eNd(0) values for the major oceans as determined by data from seawater and ferromanganese sediments are as follows: Atlantic Ocean, eNd(0) = -12 ± 2; Indian Ocean, eNd(0) = -8 ± 2; Pacific Ocean, eNd(0) = -3 ± 2. These values are considerably less than eNd(0) value sources with oceanic mantle affinities indicating that the REE in the oceans are dominated by continental sources. The difference in the absolute abundance of 143Nd between the Pacific and Atlantic Oceans corresponds to ab. 10**6 atoms 143Nd per gram of seawater. The correspondence between the 143Nd/144Nd in seawater and in the associated sediments suggests the possible application of this approach to paleo-oceanography. Distinctive differences in eNd(0) values are observed in the Atlantic Ocean between deep-ocean water associated with North Atlantic Deep Water and near-surface water. This suggests that North Atlantic Deep Water may be relatively well mixed with respect to Nd isotopic composition whereas near-surface water may be quite heterogeneous, reflecting different sources for surface waters relative to deep water. This suggests that it may be possible to distinguish the sources of water masses within an ocean basin on the basis of Nd isotopic composition. The Nd isotopic variations in seawater are used to relate the residence time of Nd and mixing rates between the oceans. |
format |
Dataset |
author |
Piepgras, Donald J Wasserburg, Gerald J |
author_facet |
Piepgras, Donald J Wasserburg, Gerald J |
author_sort |
Piepgras, Donald J |
title |
(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
title_short |
(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
title_full |
(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
title_fullStr |
(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
title_full_unstemmed |
(Table 4, page 134) Results of Nd isotopic measurements in two layers of a Pacific Ocean manganese nodule (MN139) |
title_sort |
(table 4, page 134) results of nd isotopic measurements in two layers of a pacific ocean manganese nodule (mn139) |
publisher |
PANGAEA |
publishDate |
1980 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.867452 https://doi.org/10.1594/PANGAEA.867452 |
op_coverage |
LATITUDE: 20.016667 * LONGITUDE: -136.600000 * DATE/TIME START: 1976-11-15T00:00:00 * DATE/TIME END: 1976-11-15T00:00:00 * MINIMUM ELEVATION: -3916.0 m * MAXIMUM ELEVATION: -3916.0 m |
long_lat |
ENVELOPE(-136.600000,-136.600000,20.016667,20.016667) |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_source |
Supplement to: Piepgras, Donald J; Wasserburg, Gerald J (1980): Neodymium isotopic variations in seawater. Earth and Planetary Science Letters, 50(1), 128-138, https://doi.org/10.1016/0012-821X(80)90124-7 |
op_relation |
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN https://doi.pangaea.de/10.1594/PANGAEA.867452 https://doi.org/10.1594/PANGAEA.867452 |
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.867452 https://doi.org/10.1016/0012-821X(80)90124-7 https://doi.org/10.7289/V52Z13FT https://doi.org/10.7289/V53X84KN |
_version_ |
1766116825615040512 |