Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific
The application of radiogenic isotopes to the study of Cenozoic circulation patterns in the South Pacific Ocean has been hampered by the fact that records from only equatorial Pacific deep water have been available. We present new Pb and Nd isotope time series for two ferromanganese crusts that grew...
Main Authors: | , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2004
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.737637 https://doi.org/10.1594/PANGAEA.737637 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.737637 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.737637 2023-05-15T13:42:10+02:00 Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific van de Flierdt, Tina Frank, Martin Halliday, Alex N Hein, James R Hattendorf, Bodo Günther, Detlef Kubik, Peter W MEDIAN LATITUDE: -9.090929 * MEDIAN LONGITUDE: 173.918816 * SOUTH-BOUND LATITUDE: -28.573667 * WEST-BOUND LONGITUDE: 163.003833 * NORTH-BOUND LATITUDE: 7.516667 * EAST-BOUND LONGITUDE: -168.066667 * DATE/TIME START: 1985-05-04T00:00:00 * DATE/TIME END: 1985-05-04T00:00:00 2004-05-03 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.737637 https://doi.org/10.1594/PANGAEA.737637 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.737637 https://doi.org/10.1594/PANGAEA.737637 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: van de Flierdt, Tina; Frank, Martin; Halliday, Alex N; Hein, James R; Hattendorf, Bodo; Günther, Detlef; Kubik, Peter W (2004): Deep and bottom water export from the Southern Ocean to the Pacific Ocean over the past 38 million years. Paleoceanography, 19(1), PA1020, https://doi.org/10.1029/2003PA000923 63KD D137-01 D27_2-1 Dredge box DRG DRG_B F10-89-CP NovaIX SO36/2 SO36/2_63KD Sonne South Tasman Rise Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.737637 https://doi.org/10.1029/2003PA000923 2023-01-20T07:31:45Z The application of radiogenic isotopes to the study of Cenozoic circulation patterns in the South Pacific Ocean has been hampered by the fact that records from only equatorial Pacific deep water have been available. We present new Pb and Nd isotope time series for two ferromanganese crusts that grew from equatorial Pacific bottom water (D137-01, 'Nova', 7219 m water depth) and southwest Pacific deep water (63KD, 'Tasman', 1700 m water depth). The crusts were dated using 10Be/9Be ratios combined with constant Co-flux dating and yield time series for the past 38 and 23 Myr, respectively. The surface Nd and Pb isotope distributions are consistent with the present-day circulation pattern, and therefore the new records are considered suitable to reconstruct Eocene through Miocene paleoceanography for the South Pacific. The isotope time series of crusts Nova and Tasman suggest that equatorial Pacific deep water and waters from the Southern Ocean supplied the dissolved trace metals to both sites over the past 38 Myr. Changes in the isotopic composition of crust Nova are interpreted to reflect development of the Antarctic Circumpolar Current and changes in Pacific deep water circulation caused by the build up of the East Antarctic Ice Sheet. The Nd isotopic composition of the shallower water site in the southwest Pacific appears to have been more sensitive to circulation changes resulting from closure of the Indonesian seaway. Dataset Antarc* Antarctic Ice Sheet Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic East Antarctic Ice Sheet Pacific South Tasman Rise ENVELOPE(148.000,148.000,-47.500,-47.500) Southern Ocean The Antarctic ENVELOPE(163.003833,-168.066667,7.516667,-28.573667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
63KD D137-01 D27_2-1 Dredge box DRG DRG_B F10-89-CP NovaIX SO36/2 SO36/2_63KD Sonne South Tasman Rise |
spellingShingle |
63KD D137-01 D27_2-1 Dredge box DRG DRG_B F10-89-CP NovaIX SO36/2 SO36/2_63KD Sonne South Tasman Rise van de Flierdt, Tina Frank, Martin Halliday, Alex N Hein, James R Hattendorf, Bodo Günther, Detlef Kubik, Peter W Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
topic_facet |
63KD D137-01 D27_2-1 Dredge box DRG DRG_B F10-89-CP NovaIX SO36/2 SO36/2_63KD Sonne South Tasman Rise |
description |
The application of radiogenic isotopes to the study of Cenozoic circulation patterns in the South Pacific Ocean has been hampered by the fact that records from only equatorial Pacific deep water have been available. We present new Pb and Nd isotope time series for two ferromanganese crusts that grew from equatorial Pacific bottom water (D137-01, 'Nova', 7219 m water depth) and southwest Pacific deep water (63KD, 'Tasman', 1700 m water depth). The crusts were dated using 10Be/9Be ratios combined with constant Co-flux dating and yield time series for the past 38 and 23 Myr, respectively. The surface Nd and Pb isotope distributions are consistent with the present-day circulation pattern, and therefore the new records are considered suitable to reconstruct Eocene through Miocene paleoceanography for the South Pacific. The isotope time series of crusts Nova and Tasman suggest that equatorial Pacific deep water and waters from the Southern Ocean supplied the dissolved trace metals to both sites over the past 38 Myr. Changes in the isotopic composition of crust Nova are interpreted to reflect development of the Antarctic Circumpolar Current and changes in Pacific deep water circulation caused by the build up of the East Antarctic Ice Sheet. The Nd isotopic composition of the shallower water site in the southwest Pacific appears to have been more sensitive to circulation changes resulting from closure of the Indonesian seaway. |
format |
Dataset |
author |
van de Flierdt, Tina Frank, Martin Halliday, Alex N Hein, James R Hattendorf, Bodo Günther, Detlef Kubik, Peter W |
author_facet |
van de Flierdt, Tina Frank, Martin Halliday, Alex N Hein, James R Hattendorf, Bodo Günther, Detlef Kubik, Peter W |
author_sort |
van de Flierdt, Tina |
title |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
title_short |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
title_full |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
title_fullStr |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
title_full_unstemmed |
Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific |
title_sort |
nd, pb, and be isotopes of ferromanaganese crusts of the south pacific |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.737637 https://doi.org/10.1594/PANGAEA.737637 |
op_coverage |
MEDIAN LATITUDE: -9.090929 * MEDIAN LONGITUDE: 173.918816 * SOUTH-BOUND LATITUDE: -28.573667 * WEST-BOUND LONGITUDE: 163.003833 * NORTH-BOUND LATITUDE: 7.516667 * EAST-BOUND LONGITUDE: -168.066667 * DATE/TIME START: 1985-05-04T00:00:00 * DATE/TIME END: 1985-05-04T00:00:00 |
long_lat |
ENVELOPE(148.000,148.000,-47.500,-47.500) ENVELOPE(163.003833,-168.066667,7.516667,-28.573667) |
geographic |
Antarctic East Antarctic Ice Sheet Pacific South Tasman Rise Southern Ocean The Antarctic |
geographic_facet |
Antarctic East Antarctic Ice Sheet Pacific South Tasman Rise Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Southern Ocean |
op_source |
Supplement to: van de Flierdt, Tina; Frank, Martin; Halliday, Alex N; Hein, James R; Hattendorf, Bodo; Günther, Detlef; Kubik, Peter W (2004): Deep and bottom water export from the Southern Ocean to the Pacific Ocean over the past 38 million years. Paleoceanography, 19(1), PA1020, https://doi.org/10.1029/2003PA000923 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.737637 https://doi.org/10.1594/PANGAEA.737637 |
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.737637 https://doi.org/10.1029/2003PA000923 |
_version_ |
1766163779192619008 |