Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea
Three Norwegian Sea deep-sea cores, which penetrate to sediments at least 200,000 years old, were analyzed for oxygen isotope content, total calcium carbonate, and planktonic foraminifera. The oxygen isotopic stratigraphy was used to refine the time control for paleoclimatic and paleo-oceanographic...
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1978
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.726546 2023-05-15T17:14:59+02:00 Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea Kellogg, Thomas B Shackleton, Nicholas J Duplessy, Jean-Claude MEDIAN LATITUDE: 68.199778 * MEDIAN LONGITUDE: -11.362333 * SOUTH-BOUND LATITUDE: 64.783000 * WEST-BOUND LONGITUDE: -29.570000 * NORTH-BOUND LATITUDE: 71.783333 * EAST-BOUND LONGITUDE: 1.600000 * DATE/TIME START: 1970-07-19T00:00:00 * DATE/TIME END: 1970-09-13T00:00:00 1978-08-12 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.726546 https://doi.org/10.1594/PANGAEA.726546 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.726546 https://doi.org/10.1594/PANGAEA.726546 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kellogg, Thomas B; Duplessy, Jean-Claude; Shackleton, Nicholas J (1978): Planktonic foraminiferal and oxygen isotopic stratigraphy and paleoclimatology of Norwegian Sea deep-sea cores. Boreas, 7(1), 61-73, https://doi.org/10.1111/j.1502-3885.1978.tb00051.x CLIMAP Climate: Long-Range Investigation Mapping and Prediction Quaternary Environment of the Eurasian North QUEEN Dataset 1978 ftpangaea https://doi.org/10.1594/PANGAEA.726546 https://doi.org/10.1111/j.1502-3885.1978.tb00051.x 2023-01-20T07:31:28Z Three Norwegian Sea deep-sea cores, which penetrate to sediments at least 200,000 years old, were analyzed for oxygen isotope content, total calcium carbonate, and planktonic foraminifera. The oxygen isotopic stratigraphy was used to refine the time control for paleoclimatic and paleo-oceanographic events previously described for the region. Two pulses of relatively warm subpolar water entered the region between 124,000 B.P. and 115,000 B.P. (the last interglacial), and since about 13,000 B.P. The remaining portion of the last 150,000 years was characterized by extensive ice cover. The magnitude of the change in isotopic composition between peak glacial and peak interglacial conditions is larger than can be explained by the changing isotopic content of the oceans alone suggesting that large temperature and salinity effects are recorded in isotope curves from Norwegian Sea isotope curves. The magnitude of the isotopic change from substage 5e to 5d (greater than 1%) is attributed to a combination of changing oceanic isotopic composition combined with a large temperature effect due to a sudden sea-surface temperature decrease of about 6oC. The persistence of heavy isotope values throughout substages 5d through 5a may be related to the sea-ice cover which prevented dilution of the isotopically heavy waters by isotopically light run-off. Sedimentation rates calculated for each of the isotope stages show large changes from one stage to another with some tendency for odd numbered stages to have higher rates. Dataset Neogloboquadrina pachyderma Norwegian Sea Planktonic foraminifera Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea ENVELOPE(-29.570000,1.600000,71.783333,64.783000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
CLIMAP Climate: Long-Range Investigation Mapping and Prediction Quaternary Environment of the Eurasian North QUEEN |
spellingShingle |
CLIMAP Climate: Long-Range Investigation Mapping and Prediction Quaternary Environment of the Eurasian North QUEEN Kellogg, Thomas B Shackleton, Nicholas J Duplessy, Jean-Claude Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
topic_facet |
CLIMAP Climate: Long-Range Investigation Mapping and Prediction Quaternary Environment of the Eurasian North QUEEN |
description |
Three Norwegian Sea deep-sea cores, which penetrate to sediments at least 200,000 years old, were analyzed for oxygen isotope content, total calcium carbonate, and planktonic foraminifera. The oxygen isotopic stratigraphy was used to refine the time control for paleoclimatic and paleo-oceanographic events previously described for the region. Two pulses of relatively warm subpolar water entered the region between 124,000 B.P. and 115,000 B.P. (the last interglacial), and since about 13,000 B.P. The remaining portion of the last 150,000 years was characterized by extensive ice cover. The magnitude of the change in isotopic composition between peak glacial and peak interglacial conditions is larger than can be explained by the changing isotopic content of the oceans alone suggesting that large temperature and salinity effects are recorded in isotope curves from Norwegian Sea isotope curves. The magnitude of the isotopic change from substage 5e to 5d (greater than 1%) is attributed to a combination of changing oceanic isotopic composition combined with a large temperature effect due to a sudden sea-surface temperature decrease of about 6oC. The persistence of heavy isotope values throughout substages 5d through 5a may be related to the sea-ice cover which prevented dilution of the isotopically heavy waters by isotopically light run-off. Sedimentation rates calculated for each of the isotope stages show large changes from one stage to another with some tendency for odd numbered stages to have higher rates. |
format |
Dataset |
author |
Kellogg, Thomas B Shackleton, Nicholas J Duplessy, Jean-Claude |
author_facet |
Kellogg, Thomas B Shackleton, Nicholas J Duplessy, Jean-Claude |
author_sort |
Kellogg, Thomas B |
title |
Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
title_short |
Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
title_full |
Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
title_fullStr |
Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
title_full_unstemmed |
Stable oxygen isotope ratios of Neogloboquadrina pachyderma from sediment cores of the Norwegian Sea |
title_sort |
stable oxygen isotope ratios of neogloboquadrina pachyderma from sediment cores of the norwegian sea |
publisher |
PANGAEA |
publishDate |
1978 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.726546 https://doi.org/10.1594/PANGAEA.726546 |
op_coverage |
MEDIAN LATITUDE: 68.199778 * MEDIAN LONGITUDE: -11.362333 * SOUTH-BOUND LATITUDE: 64.783000 * WEST-BOUND LONGITUDE: -29.570000 * NORTH-BOUND LATITUDE: 71.783333 * EAST-BOUND LONGITUDE: 1.600000 * DATE/TIME START: 1970-07-19T00:00:00 * DATE/TIME END: 1970-09-13T00:00:00 |
long_lat |
ENVELOPE(-29.570000,1.600000,71.783333,64.783000) |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Neogloboquadrina pachyderma Norwegian Sea Planktonic foraminifera Sea ice |
genre_facet |
Neogloboquadrina pachyderma Norwegian Sea Planktonic foraminifera Sea ice |
op_source |
Supplement to: Kellogg, Thomas B; Duplessy, Jean-Claude; Shackleton, Nicholas J (1978): Planktonic foraminiferal and oxygen isotopic stratigraphy and paleoclimatology of Norwegian Sea deep-sea cores. Boreas, 7(1), 61-73, https://doi.org/10.1111/j.1502-3885.1978.tb00051.x |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.726546 https://doi.org/10.1594/PANGAEA.726546 |
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.726546 https://doi.org/10.1111/j.1502-3885.1978.tb00051.x |
_version_ |
1766073111473553408 |