AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2
International audience Abstract 14 C dates obtained by accelerator mass spectrometry (AMS) on monospecific foraminiferal samples from two deep-sea sediment cores raised in the Indian sector of the Southern Ocean have been corrected for the difference in 14 C composition between atmosphere and sea su...
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ftunivnantes:oai:HAL:hal-03552003v1 2023-05-15T18:24:24+02:00 AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 Bard, Edouard Labeyrie, Laurent Arnold, Maurice Labracherie, Monique Pichon, Jean-Jacques Duprat, Josette Duplessy, Jean-Claude Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) 1989-03 https://hal.science/hal-03552003 https://doi.org/10.1016/0033-5894(89)90011-2 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/0033-5894(89)90011-2 hal-03552003 https://hal.science/hal-03552003 doi:10.1016/0033-5894(89)90011-2 ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.science/hal-03552003 Quaternary Research, 1989, 31 (2), pp.309-317. ⟨10.1016/0033-5894(89)90011-2⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1989 ftunivnantes https://doi.org/10.1016/0033-5894(89)90011-2 2023-02-08T03:16:48Z International audience Abstract 14 C dates obtained by accelerator mass spectrometry (AMS) on monospecific foraminiferal samples from two deep-sea sediment cores raised in the Indian sector of the Southern Ocean have been corrected for the difference in 14 C composition between atmosphere and sea surface by using a reconstruction of the latitudinal 14 C gradient which existed in the Southern Ocean prior to 1962. The corrected AMS- 14 C data show a reduced sedimentation rate in core MD 84-527 between 25,000 and 10,000 yr BP. For core MD 84-551 the available data suggest that the sedimentation rate was higher during the Holocene than during the glacial period. These changes in sedimentation rates may be attributed to an increased opal dissolution during the last glacial maximum. Article in Journal/Newspaper Southern Ocean Université de Nantes: HAL-UNIV-NANTES Indian Southern Ocean Quaternary Research 31 2 309 317 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Bard, Edouard Labeyrie, Laurent Arnold, Maurice Labracherie, Monique Pichon, Jean-Jacques Duprat, Josette Duplessy, Jean-Claude AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Abstract 14 C dates obtained by accelerator mass spectrometry (AMS) on monospecific foraminiferal samples from two deep-sea sediment cores raised in the Indian sector of the Southern Ocean have been corrected for the difference in 14 C composition between atmosphere and sea surface by using a reconstruction of the latitudinal 14 C gradient which existed in the Southern Ocean prior to 1962. The corrected AMS- 14 C data show a reduced sedimentation rate in core MD 84-527 between 25,000 and 10,000 yr BP. For core MD 84-551 the available data suggest that the sedimentation rate was higher during the Holocene than during the glacial period. These changes in sedimentation rates may be attributed to an increased opal dissolution during the last glacial maximum. |
author2 |
Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Département de Géologie et d'Océanographie Talence (DGO) Université Sciences et Technologies - Bordeaux 1 (UB) |
format |
Article in Journal/Newspaper |
author |
Bard, Edouard Labeyrie, Laurent Arnold, Maurice Labracherie, Monique Pichon, Jean-Jacques Duprat, Josette Duplessy, Jean-Claude |
author_facet |
Bard, Edouard Labeyrie, Laurent Arnold, Maurice Labracherie, Monique Pichon, Jean-Jacques Duprat, Josette Duplessy, Jean-Claude |
author_sort |
Bard, Edouard |
title |
AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
title_short |
AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
title_full |
AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
title_fullStr |
AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
title_full_unstemmed |
AMS- 14 C Ages Measured in Deep Sea Cores from the Southern Ocean: Implications for Sedimentation Rates during Isotope Stage 2 |
title_sort |
ams- 14 c ages measured in deep sea cores from the southern ocean: implications for sedimentation rates during isotope stage 2 |
publisher |
HAL CCSD |
publishDate |
1989 |
url |
https://hal.science/hal-03552003 https://doi.org/10.1016/0033-5894(89)90011-2 |
geographic |
Indian Southern Ocean |
geographic_facet |
Indian Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.science/hal-03552003 Quaternary Research, 1989, 31 (2), pp.309-317. ⟨10.1016/0033-5894(89)90011-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/0033-5894(89)90011-2 hal-03552003 https://hal.science/hal-03552003 doi:10.1016/0033-5894(89)90011-2 |
op_doi |
https://doi.org/10.1016/0033-5894(89)90011-2 |
container_title |
Quaternary Research |
container_volume |
31 |
container_issue |
2 |
container_start_page |
309 |
op_container_end_page |
317 |
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1766204895505940480 |