Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr
Records of 10Be, 9Be, mineralogy and grain size were obtained from two cores collected by the Polarstern Expedition 1991 in the southern Nansen Basin (PS2213-6) and the Yermak Plateau (PS2208-2). The accumulation of sediments examined started from about 350 kyr (BP), and includes relatively well def...
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ftdatacite:10.1594/pangaea.696118 2023-05-15T14:56:19+02:00 Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr Aldahan, Ala Ning, Shi Possnert, Göran Backman, Jan Boström, Kurt 1997 application/zip https://dx.doi.org/10.1594/pangaea.696118 https://doi.pangaea.de/10.1594/PANGAEA.696118 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0025-3227(97)00084-4 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Giant piston corer Giant box corer ARK-VIII/3 Polarstern Collection of Datasets article Collection 1997 ftdatacite https://doi.org/10.1594/pangaea.696118 https://doi.org/10.1016/s0025-3227(97)00084-4 2022-02-09T13:23:14Z Records of 10Be, 9Be, mineralogy and grain size were obtained from two cores collected by the Polarstern Expedition 1991 in the southern Nansen Basin (PS2213-6) and the Yermak Plateau (PS2208-2). The accumulation of sediments examined started from about 350 kyr (BP), and includes relatively well defined trends of Be isotopes coincident with interglacial/glacial climatic cycles. Sediment accumulation rates (g/cm**2/kyr) were higher during glacial periods and our estimates of 1.0 and 2.5 cm/kyr sedimentation rates during the Holocene agree with other estimates for the southern Nansen Basin and the Yermak Plateau, respectively. The variations in 10Be concentration (atoms/g) and flux (atoms/cm**2/kyr) are inverse to sediment flux, where high 10Be concentration and flux are associated with generally low sedimentation/accumulation rates during interglacial periods. We hypothesize that climate plays an important role in 10Be records from the Arctic sediments, reflecting the intensity and distribution of the ice mass on land and the ocean. Article in Journal/Newspaper Arctic Arctic Ocean Nansen Basin Yermak plateau DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Giant piston corer Giant box corer ARK-VIII/3 Polarstern |
spellingShingle |
Giant piston corer Giant box corer ARK-VIII/3 Polarstern Aldahan, Ala Ning, Shi Possnert, Göran Backman, Jan Boström, Kurt Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
topic_facet |
Giant piston corer Giant box corer ARK-VIII/3 Polarstern |
description |
Records of 10Be, 9Be, mineralogy and grain size were obtained from two cores collected by the Polarstern Expedition 1991 in the southern Nansen Basin (PS2213-6) and the Yermak Plateau (PS2208-2). The accumulation of sediments examined started from about 350 kyr (BP), and includes relatively well defined trends of Be isotopes coincident with interglacial/glacial climatic cycles. Sediment accumulation rates (g/cm**2/kyr) were higher during glacial periods and our estimates of 1.0 and 2.5 cm/kyr sedimentation rates during the Holocene agree with other estimates for the southern Nansen Basin and the Yermak Plateau, respectively. The variations in 10Be concentration (atoms/g) and flux (atoms/cm**2/kyr) are inverse to sediment flux, where high 10Be concentration and flux are associated with generally low sedimentation/accumulation rates during interglacial periods. We hypothesize that climate plays an important role in 10Be records from the Arctic sediments, reflecting the intensity and distribution of the ice mass on land and the ocean. |
format |
Article in Journal/Newspaper |
author |
Aldahan, Ala Ning, Shi Possnert, Göran Backman, Jan Boström, Kurt |
author_facet |
Aldahan, Ala Ning, Shi Possnert, Göran Backman, Jan Boström, Kurt |
author_sort |
Aldahan, Ala |
title |
Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
title_short |
Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
title_full |
Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
title_fullStr |
Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
title_full_unstemmed |
Age determination, Beryllium analysis, and mineral composition of two sediment cores of the Arctic Ocean covering the past 350 kyr |
title_sort |
age determination, beryllium analysis, and mineral composition of two sediment cores of the arctic ocean covering the past 350 kyr |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1997 |
url |
https://dx.doi.org/10.1594/pangaea.696118 https://doi.pangaea.de/10.1594/PANGAEA.696118 |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) |
geographic |
Arctic Arctic Ocean Yermak Plateau |
geographic_facet |
Arctic Arctic Ocean Yermak Plateau |
genre |
Arctic Arctic Ocean Nansen Basin Yermak plateau |
genre_facet |
Arctic Arctic Ocean Nansen Basin Yermak plateau |
op_relation |
https://dx.doi.org/10.1016/s0025-3227(97)00084-4 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.696118 https://doi.org/10.1016/s0025-3227(97)00084-4 |
_version_ |
1766328330292822016 |