Age determination of late Quaternary sediment cores from the South Tasman Rise
We use sediment cores from the South Tasman Rise (STR) to reconstruct deep- water circulation in the southwest Pacific sector of the Southern Ocean. Sediment cores MD972106 (45° 09' S, 146° 17' E, 3310 m water depth) and GC34 (45° 06' S, 147° 45' E, 4002 m water depth) preserve r...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.821370 2023-05-15T18:24:38+02:00 Age determination of late Quaternary sediment cores from the South Tasman Rise Moy, Christopher M Howard, William R Gagan, Michael K MEDIAN LATITUDE: -45.124083 * MEDIAN LONGITUDE: 147.013517 * SOUTH-BOUND LATITUDE: -45.148167 * WEST-BOUND LONGITUDE: 146.285333 * NORTH-BOUND LATITUDE: -45.100000 * EAST-BOUND LONGITUDE: 147.741700 * DATE/TIME START: 1997-05-07T03:33:00 * DATE/TIME END: 1997-05-07T03:33:00 2006-10-29 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.821370 https://doi.org/10.1594/PANGAEA.821370 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.821370 https://doi.org/10.1594/PANGAEA.821370 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Moy, Andrew D; Howard, William R; Gagan, Michael K (2006): Late Quaternary palaeoceanography of the Circumpolar Deep Water from the South Tasman Rise. Journal of Quaternary Science, 21(7), 763-777, https://doi.org/10.1002/jqs.1067 Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.821370 https://doi.org/10.1002/jqs.1067 2023-01-20T07:33:10Z We use sediment cores from the South Tasman Rise (STR) to reconstruct deep- water circulation in the southwest Pacific sector of the Southern Ocean. Sediment cores MD972106 (45° 09' S, 146° 17' E, 3310 m water depth) and GC34 (45° 06' S, 147° 45' E, 4002 m water depth) preserve records covering the last 160 kyr, with chronology controlled by calibrated accelerator mass spectrometry radiocarbon dates and benthic foraminiferal d18O tied to SPECMAP. The STR benthic foraminiferal d13C records provide new d13C values for Southern Ocean deep water spanning the last 160 kyr at sites unlikely to be affected by variations in productivity. The records establish that glacial benthic foraminifera (Cibicidoides spp.) d13C values are lower relative to interglacial values and are comparable to previous glacial benthic d13C records in the Indian and Pacific sectors of the Southern Ocean. Comparisons of the benthic foraminiferal d13C time series at the STR are made with the equatorial Pacific (V19-30 and Site 846) and the equatorial Atlantic (GeoB1115). The similarity of benthic d13C records at the STR to the equatorial Pacific suggest the Southern Ocean deep-water mass closely tracked those of the deep Pacific, and the presence of a d13C gradient between the STR and the equatorial Atlantic suggests there was continual production of northern source deep water over the past 160 kyr. Dataset Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean Pacific Indian South Tasman Rise ENVELOPE(148.000,148.000,-47.500,-47.500) ENVELOPE(146.285333,147.741700,-45.100000,-45.148167) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
We use sediment cores from the South Tasman Rise (STR) to reconstruct deep- water circulation in the southwest Pacific sector of the Southern Ocean. Sediment cores MD972106 (45° 09' S, 146° 17' E, 3310 m water depth) and GC34 (45° 06' S, 147° 45' E, 4002 m water depth) preserve records covering the last 160 kyr, with chronology controlled by calibrated accelerator mass spectrometry radiocarbon dates and benthic foraminiferal d18O tied to SPECMAP. The STR benthic foraminiferal d13C records provide new d13C values for Southern Ocean deep water spanning the last 160 kyr at sites unlikely to be affected by variations in productivity. The records establish that glacial benthic foraminifera (Cibicidoides spp.) d13C values are lower relative to interglacial values and are comparable to previous glacial benthic d13C records in the Indian and Pacific sectors of the Southern Ocean. Comparisons of the benthic foraminiferal d13C time series at the STR are made with the equatorial Pacific (V19-30 and Site 846) and the equatorial Atlantic (GeoB1115). The similarity of benthic d13C records at the STR to the equatorial Pacific suggest the Southern Ocean deep-water mass closely tracked those of the deep Pacific, and the presence of a d13C gradient between the STR and the equatorial Atlantic suggests there was continual production of northern source deep water over the past 160 kyr. |
format |
Dataset |
author |
Moy, Christopher M Howard, William R Gagan, Michael K |
spellingShingle |
Moy, Christopher M Howard, William R Gagan, Michael K Age determination of late Quaternary sediment cores from the South Tasman Rise |
author_facet |
Moy, Christopher M Howard, William R Gagan, Michael K |
author_sort |
Moy, Christopher M |
title |
Age determination of late Quaternary sediment cores from the South Tasman Rise |
title_short |
Age determination of late Quaternary sediment cores from the South Tasman Rise |
title_full |
Age determination of late Quaternary sediment cores from the South Tasman Rise |
title_fullStr |
Age determination of late Quaternary sediment cores from the South Tasman Rise |
title_full_unstemmed |
Age determination of late Quaternary sediment cores from the South Tasman Rise |
title_sort |
age determination of late quaternary sediment cores from the south tasman rise |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.821370 https://doi.org/10.1594/PANGAEA.821370 |
op_coverage |
MEDIAN LATITUDE: -45.124083 * MEDIAN LONGITUDE: 147.013517 * SOUTH-BOUND LATITUDE: -45.148167 * WEST-BOUND LONGITUDE: 146.285333 * NORTH-BOUND LATITUDE: -45.100000 * EAST-BOUND LONGITUDE: 147.741700 * DATE/TIME START: 1997-05-07T03:33:00 * DATE/TIME END: 1997-05-07T03:33:00 |
long_lat |
ENVELOPE(148.000,148.000,-47.500,-47.500) ENVELOPE(146.285333,147.741700,-45.100000,-45.148167) |
geographic |
Southern Ocean Pacific Indian South Tasman Rise |
geographic_facet |
Southern Ocean Pacific Indian South Tasman Rise |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Supplement to: Moy, Andrew D; Howard, William R; Gagan, Michael K (2006): Late Quaternary palaeoceanography of the Circumpolar Deep Water from the South Tasman Rise. Journal of Quaternary Science, 21(7), 763-777, https://doi.org/10.1002/jqs.1067 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.821370 https://doi.org/10.1594/PANGAEA.821370 |
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.821370 https://doi.org/10.1002/jqs.1067 |
_version_ |
1766205389231095808 |