Sedimentology and stable carbon and oxygen isotope record of the Central Arctic
Stable oxygen and carbon isotope and sedimentological-paleontological investigations supported by accelerator mass spectrometry 14C datings were carried out on cores from north of 85°N in the eastern central Arctic Ocean. Significant changes in accumulation rates, provenance of ice-rafted debris (IR...
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1998
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.733504 2023-05-15T13:22:45+02:00 Sedimentology and stable carbon and oxygen isotope record of the Central Arctic Nørgaard-Pedersen, Niels Spielhagen, Robert F Thiede, Jörn Kassens, Heidemarie MEDIAN LATITUDE: 86.801240 * MEDIAN LONGITUDE: 66.877060 * SOUTH-BOUND LATITUDE: 85.327700 * WEST-BOUND LONGITUDE: -14.022000 * NORTH-BOUND LATITUDE: 88.036000 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-15T00:00:00 * DATE/TIME END: 1991-09-16T00:00:00 1998-02-09 application/zip, 20 datasets https://doi.pangaea.de/10.1594/PANGAEA.733504 https://doi.org/10.1594/PANGAEA.733504 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.733504 https://doi.org/10.1594/PANGAEA.733504 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Nørgaard-Pedersen, Niels; Spielhagen, Robert F; Thiede, Jörn; Kassens, Heidemarie (1998): Central Arctic surface ocean environment during the past 80,000 years. Paleoceanography, 13(2), 193-204, https://doi.org/10.1029/97PA03409 Amundsen Basin ARK-VIII/3 Gakkel Ridge Arctic Ocean GEOMAR Giant box corer GKG Helmholtz Centre for Ocean Research Kiel Lomonosov Ridge Morris Jesup Rise Polarstern PS19/160 PS19/175 PS19/186 PS19/206 PS19/218 PS19 ARCTIC91 PS2166-2 PS2177-1 PS2185-3 PS2195-4 PS2200-2 Quaternary Environment of the Eurasian North QUEEN Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.733504 https://doi.org/10.1029/97PA03409 2023-01-20T07:31:37Z Stable oxygen and carbon isotope and sedimentological-paleontological investigations supported by accelerator mass spectrometry 14C datings were carried out on cores from north of 85°N in the eastern central Arctic Ocean. Significant changes in accumulation rates, provenance of ice-rafted debris (IRD), and planktic productivity over the past 80,000 years are documented. During peak glacials, i.e., oxygen isotope stages 4 and 2, the Arctic Ocean was covered by sea ice with decreased seasonal variation, limiting planktic productivity and bulk sedimentation rates. In early stage 3 and during Termination I, major deglaciations of the circum-Arctic regions caused lowered salinities and poor oxygenation of central Arctic surface waters. A meltwater spike and an associated IRD peak dated to ~14-12 14C ka can be traced over the southern Eurasian Basin of the Arctic Ocean. This event was associated with the early and rapid deglaciation of the marine-based Barents Sea Ice Sheet. A separate Termination Ib meltwater event is most conspicuous in the central Arctic and is associated with characteristic dolomitic carbonate IRD. This lithology suggests an origin of glacial ice from northern Canada and northern Greenland where lower Paleozoic platform carbonates crop extensively out. Dataset amundsen basin Arctic Arctic Arctic Ocean Barents Sea Central Arctic Greenland Ice Sheet Lomonosov Ridge Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Arctic Arctic Ocean Barents Sea Canada Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Greenland Morris Jesup Rise ENVELOPE(-20.000,-20.000,83.750,83.750) ENVELOPE(-14.022000,144.166200,88.036000,85.327700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen Basin ARK-VIII/3 Gakkel Ridge Arctic Ocean GEOMAR Giant box corer GKG Helmholtz Centre for Ocean Research Kiel Lomonosov Ridge Morris Jesup Rise Polarstern PS19/160 PS19/175 PS19/186 PS19/206 PS19/218 PS19 ARCTIC91 PS2166-2 PS2177-1 PS2185-3 PS2195-4 PS2200-2 Quaternary Environment of the Eurasian North QUEEN |
spellingShingle |
Amundsen Basin ARK-VIII/3 Gakkel Ridge Arctic Ocean GEOMAR Giant box corer GKG Helmholtz Centre for Ocean Research Kiel Lomonosov Ridge Morris Jesup Rise Polarstern PS19/160 PS19/175 PS19/186 PS19/206 PS19/218 PS19 ARCTIC91 PS2166-2 PS2177-1 PS2185-3 PS2195-4 PS2200-2 Quaternary Environment of the Eurasian North QUEEN Nørgaard-Pedersen, Niels Spielhagen, Robert F Thiede, Jörn Kassens, Heidemarie Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
topic_facet |
Amundsen Basin ARK-VIII/3 Gakkel Ridge Arctic Ocean GEOMAR Giant box corer GKG Helmholtz Centre for Ocean Research Kiel Lomonosov Ridge Morris Jesup Rise Polarstern PS19/160 PS19/175 PS19/186 PS19/206 PS19/218 PS19 ARCTIC91 PS2166-2 PS2177-1 PS2185-3 PS2195-4 PS2200-2 Quaternary Environment of the Eurasian North QUEEN |
description |
Stable oxygen and carbon isotope and sedimentological-paleontological investigations supported by accelerator mass spectrometry 14C datings were carried out on cores from north of 85°N in the eastern central Arctic Ocean. Significant changes in accumulation rates, provenance of ice-rafted debris (IRD), and planktic productivity over the past 80,000 years are documented. During peak glacials, i.e., oxygen isotope stages 4 and 2, the Arctic Ocean was covered by sea ice with decreased seasonal variation, limiting planktic productivity and bulk sedimentation rates. In early stage 3 and during Termination I, major deglaciations of the circum-Arctic regions caused lowered salinities and poor oxygenation of central Arctic surface waters. A meltwater spike and an associated IRD peak dated to ~14-12 14C ka can be traced over the southern Eurasian Basin of the Arctic Ocean. This event was associated with the early and rapid deglaciation of the marine-based Barents Sea Ice Sheet. A separate Termination Ib meltwater event is most conspicuous in the central Arctic and is associated with characteristic dolomitic carbonate IRD. This lithology suggests an origin of glacial ice from northern Canada and northern Greenland where lower Paleozoic platform carbonates crop extensively out. |
format |
Dataset |
author |
Nørgaard-Pedersen, Niels Spielhagen, Robert F Thiede, Jörn Kassens, Heidemarie |
author_facet |
Nørgaard-Pedersen, Niels Spielhagen, Robert F Thiede, Jörn Kassens, Heidemarie |
author_sort |
Nørgaard-Pedersen, Niels |
title |
Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
title_short |
Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
title_full |
Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
title_fullStr |
Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
title_full_unstemmed |
Sedimentology and stable carbon and oxygen isotope record of the Central Arctic |
title_sort |
sedimentology and stable carbon and oxygen isotope record of the central arctic |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.733504 https://doi.org/10.1594/PANGAEA.733504 |
op_coverage |
MEDIAN LATITUDE: 86.801240 * MEDIAN LONGITUDE: 66.877060 * SOUTH-BOUND LATITUDE: 85.327700 * WEST-BOUND LONGITUDE: -14.022000 * NORTH-BOUND LATITUDE: 88.036000 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-15T00:00:00 * DATE/TIME END: 1991-09-16T00:00:00 |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(-20.000,-20.000,83.750,83.750) ENVELOPE(-14.022000,144.166200,88.036000,85.327700) |
geographic |
Amundsen Basin Arctic Arctic Ocean Barents Sea Canada Gakkel Ridge Greenland Morris Jesup Rise |
geographic_facet |
Amundsen Basin Arctic Arctic Ocean Barents Sea Canada Gakkel Ridge Greenland Morris Jesup Rise |
genre |
amundsen basin Arctic Arctic Arctic Ocean Barents Sea Central Arctic Greenland Ice Sheet Lomonosov Ridge Sea ice |
genre_facet |
amundsen basin Arctic Arctic Arctic Ocean Barents Sea Central Arctic Greenland Ice Sheet Lomonosov Ridge Sea ice |
op_source |
Supplement to: Nørgaard-Pedersen, Niels; Spielhagen, Robert F; Thiede, Jörn; Kassens, Heidemarie (1998): Central Arctic surface ocean environment during the past 80,000 years. Paleoceanography, 13(2), 193-204, https://doi.org/10.1029/97PA03409 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.733504 https://doi.org/10.1594/PANGAEA.733504 |
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.733504 https://doi.org/10.1029/97PA03409 |
_version_ |
1766366713642745856 |