Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea
A stable isotope record from the eastern Weddell Sea from 69°S is presented. For the first time, a 250,000-yr record from the Southern Ocean can be correlated in detail to the global isotope stratigraphy. Together with magnetostratigraphic, sedimentological and micropalaeontological data, the strati...
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1989
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.549061 2023-05-15T13:42:09+02:00 Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea Mackensen, Andreas Grobe, Hannes Hubberten, Hans-Wolfgang Spieß, Volkhard Fütterer, Dieter K LATITUDE: -69.033330 * LONGITUDE: -5.916660 * DATE/TIME START: 1985-12-28T20:53:00 * DATE/TIME END: 1985-12-28T20:53:00 1989-11-24 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.549061 https://doi.org/10.1594/PANGAEA.549061 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.549061 https://doi.org/10.1594/PANGAEA.549061 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Mackensen, Andreas; Grobe, Hannes; Hubberten, Hans-Wolfgang; Spieß, Volkhard; Fütterer, Dieter K (1989): Stable isotope stratigraphy from the Antarctic continental margin during the last one million years. Marine Geology, 87(2-4), 315-321, https://doi.org/10.1016/0025-3227(89)90068-6 ANT-IV/3 Atka Bay AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS08 PS08/366 PS1388-3 SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents Dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.549061 https://doi.org/10.1016/0025-3227(89)90068-6 2023-01-20T07:31:01Z A stable isotope record from the eastern Weddell Sea from 69°S is presented. For the first time, a 250,000-yr record from the Southern Ocean can be correlated in detail to the global isotope stratigraphy. Together with magnetostratigraphic, sedimentological and micropalaeontological data, the stratigraphic control of this record can be extended back to 910,000 yrs B.P. A time scale is constructed by linear interpolation between confirmed stratigraphic data points. The benthic d18O record (Epistominella exigua) reflects global continental ice volume changes during the Brunhes and late Matuyama chrons, whereas the planktonic isotopic record (Neogloboquadrina pachyderma) may be influenced by a meltwater lid caused by the nearby Antarctic ice shelf and icebergs. The worldwide climatic improvement during deglaciations is documented in the eastern Weddell Sea by an increase in production of siliceous plankton followed, with a time lag of approximately 10,000 yrs, by planktonic foraminifera production. Peak values in the difference between planktonic and benthic d13C records, which are 0.5 per mil higher during warm climatic periods than during times with expanded continental ice sheets, also suggest increased surface productivity during interglacials in the Southern Ocean. Dataset Antarc* Antarctic Ice Shelf Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Atka ENVELOPE(151.789,151.789,60.835,60.835) ENVELOPE(-5.916660,-5.916660,-69.033330,-69.033330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-IV/3 Atka Bay AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS08 PS08/366 PS1388-3 SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents |
spellingShingle |
ANT-IV/3 Atka Bay AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS08 PS08/366 PS1388-3 SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents Mackensen, Andreas Grobe, Hannes Hubberten, Hans-Wolfgang Spieß, Volkhard Fütterer, Dieter K Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
topic_facet |
ANT-IV/3 Atka Bay AWI_Paleo Gravity corer (Kiel type) Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS08 PS08/366 PS1388-3 SFB261 SL South Atlantic in Late Quaternary: Reconstruction of Budget and Currents |
description |
A stable isotope record from the eastern Weddell Sea from 69°S is presented. For the first time, a 250,000-yr record from the Southern Ocean can be correlated in detail to the global isotope stratigraphy. Together with magnetostratigraphic, sedimentological and micropalaeontological data, the stratigraphic control of this record can be extended back to 910,000 yrs B.P. A time scale is constructed by linear interpolation between confirmed stratigraphic data points. The benthic d18O record (Epistominella exigua) reflects global continental ice volume changes during the Brunhes and late Matuyama chrons, whereas the planktonic isotopic record (Neogloboquadrina pachyderma) may be influenced by a meltwater lid caused by the nearby Antarctic ice shelf and icebergs. The worldwide climatic improvement during deglaciations is documented in the eastern Weddell Sea by an increase in production of siliceous plankton followed, with a time lag of approximately 10,000 yrs, by planktonic foraminifera production. Peak values in the difference between planktonic and benthic d13C records, which are 0.5 per mil higher during warm climatic periods than during times with expanded continental ice sheets, also suggest increased surface productivity during interglacials in the Southern Ocean. |
format |
Dataset |
author |
Mackensen, Andreas Grobe, Hannes Hubberten, Hans-Wolfgang Spieß, Volkhard Fütterer, Dieter K |
author_facet |
Mackensen, Andreas Grobe, Hannes Hubberten, Hans-Wolfgang Spieß, Volkhard Fütterer, Dieter K |
author_sort |
Mackensen, Andreas |
title |
Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
title_short |
Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
title_full |
Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
title_fullStr |
Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
title_full_unstemmed |
Paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core PS1388-3 from the Antarctic continental margin in the eastern Weddell Sea |
title_sort |
paleomagnetic and stable isotope measurements and distribution of benthic foraminifera in sediment core ps1388-3 from the antarctic continental margin in the eastern weddell sea |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.549061 https://doi.org/10.1594/PANGAEA.549061 |
op_coverage |
LATITUDE: -69.033330 * LONGITUDE: -5.916660 * DATE/TIME START: 1985-12-28T20:53:00 * DATE/TIME END: 1985-12-28T20:53:00 |
long_lat |
ENVELOPE(151.789,151.789,60.835,60.835) ENVELOPE(-5.916660,-5.916660,-69.033330,-69.033330) |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Atka |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Atka |
genre |
Antarc* Antarctic Ice Shelf Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Ice Shelf Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Southern Ocean Weddell Sea |
op_source |
Supplement to: Mackensen, Andreas; Grobe, Hannes; Hubberten, Hans-Wolfgang; Spieß, Volkhard; Fütterer, Dieter K (1989): Stable isotope stratigraphy from the Antarctic continental margin during the last one million years. Marine Geology, 87(2-4), 315-321, https://doi.org/10.1016/0025-3227(89)90068-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.549061 https://doi.org/10.1594/PANGAEA.549061 |
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.549061 https://doi.org/10.1016/0025-3227(89)90068-6 |
_version_ |
1766163194919780352 |