Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge
Although more than 700 sediment cores exist from the Arctic Ocean, the Plio-Pleistocene evolution of the basin and its marginal seas remains virtually unknown. This is largely due the shallow penetration of most of these records, and difficulties associated with deriving chronologies for the recover...
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ftstockholmuniv:oai:DiVA.org:su-33764 2023-05-15T14:43:54+02:00 Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge O'Regan, Matthew St John, Kristen Moran, Kathryn Backman, Jan King, John Haley, Brian A. Jakobsson, Martin Frank, Martin Röhl, Ursula 2010 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-33764 https://doi.org/10.1016/j.quaint.2009.08.010 eng eng Institutionen för geologi och geokemi James Madison University University of Rhode Island IFM-GEOMAR, Leibniz Institute of Marine Sciences Bremen University Quaternary International, 1040-6182, 2010, 19:1-2, s. 168-176 orcid:0000-0002-6046-1488 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-33764 doi:10.1016/j.quaint.2009.08.010 ISI:000278676900016 info:eu-repo/semantics/openAccess Arctic Ocean sea ice paleoceanography Geology Geologi Article in journal info:eu-repo/semantics/article text 2010 ftstockholmuniv https://doi.org/10.1016/j.quaint.2009.08.010 2023-02-23T21:42:30Z Although more than 700 sediment cores exist from the Arctic Ocean, the Plio-Pleistocene evolution of the basin and its marginal seas remains virtually unknown. This is largely due the shallow penetration of most of these records, and difficulties associated with deriving chronologies for the recovered material. The Integrated Ocean Drilling Program's (IODP) Expedition 302 (Arctic Coring Expedition, ACEX) recovered 197 m of Neogene/Quaternary sediment from the circumpolar regions of the Lomonosov Ridge. As detailed analyses of this material emerge, research is beginning to formulate a long-term picture of paleoceanographic changes in the central Arctic Ocean. This paper reviews the ACEX Plio-Pleistocene age model, identifies uncertainties, and addresses ways in which these may be eliminated. Within the established stratigraphic framework, a notable reduction in the abundance of ice rafted debris (IRD) occurs in the early part of the Pleistocene and persists until Marine Isotope Stage 6 (MIS 6). Therefore, while global oceanographic proxies indicate the gradual growth of terrestrial ice-sheets during this time, IRD delivery to the central Arctic Ocean remained comparatively low and stable. Within the resolution of existing data, the Pleistocene reduction in IRD is synchronous with predicted changes in both the inflow of North Atlantic and Pacific waters, which in modern times are known to exert a strong influence on sea ice stability. authorCount :9 Article in Journal/Newspaper Arctic Arctic Ocean Lomonosov Ridge North Atlantic Sea ice Stockholm University: Publications (DiVA) Arctic Arctic Ocean Pacific Quaternary International 219 1-2 168 176 |
institution |
Open Polar |
collection |
Stockholm University: Publications (DiVA) |
op_collection_id |
ftstockholmuniv |
language |
English |
topic |
Arctic Ocean sea ice paleoceanography Geology Geologi |
spellingShingle |
Arctic Ocean sea ice paleoceanography Geology Geologi O'Regan, Matthew St John, Kristen Moran, Kathryn Backman, Jan King, John Haley, Brian A. Jakobsson, Martin Frank, Martin Röhl, Ursula Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
topic_facet |
Arctic Ocean sea ice paleoceanography Geology Geologi |
description |
Although more than 700 sediment cores exist from the Arctic Ocean, the Plio-Pleistocene evolution of the basin and its marginal seas remains virtually unknown. This is largely due the shallow penetration of most of these records, and difficulties associated with deriving chronologies for the recovered material. The Integrated Ocean Drilling Program's (IODP) Expedition 302 (Arctic Coring Expedition, ACEX) recovered 197 m of Neogene/Quaternary sediment from the circumpolar regions of the Lomonosov Ridge. As detailed analyses of this material emerge, research is beginning to formulate a long-term picture of paleoceanographic changes in the central Arctic Ocean. This paper reviews the ACEX Plio-Pleistocene age model, identifies uncertainties, and addresses ways in which these may be eliminated. Within the established stratigraphic framework, a notable reduction in the abundance of ice rafted debris (IRD) occurs in the early part of the Pleistocene and persists until Marine Isotope Stage 6 (MIS 6). Therefore, while global oceanographic proxies indicate the gradual growth of terrestrial ice-sheets during this time, IRD delivery to the central Arctic Ocean remained comparatively low and stable. Within the resolution of existing data, the Pleistocene reduction in IRD is synchronous with predicted changes in both the inflow of North Atlantic and Pacific waters, which in modern times are known to exert a strong influence on sea ice stability. authorCount :9 |
format |
Article in Journal/Newspaper |
author |
O'Regan, Matthew St John, Kristen Moran, Kathryn Backman, Jan King, John Haley, Brian A. Jakobsson, Martin Frank, Martin Röhl, Ursula |
author_facet |
O'Regan, Matthew St John, Kristen Moran, Kathryn Backman, Jan King, John Haley, Brian A. Jakobsson, Martin Frank, Martin Röhl, Ursula |
author_sort |
O'Regan, Matthew |
title |
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
title_short |
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
title_full |
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
title_fullStr |
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
title_full_unstemmed |
Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
title_sort |
plio-pleistocene trends in ice rafted debris on the lomonosov ridge |
publisher |
Institutionen för geologi och geokemi |
publishDate |
2010 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-33764 https://doi.org/10.1016/j.quaint.2009.08.010 |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean Lomonosov Ridge North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Lomonosov Ridge North Atlantic Sea ice |
op_relation |
Quaternary International, 1040-6182, 2010, 19:1-2, s. 168-176 orcid:0000-0002-6046-1488 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-33764 doi:10.1016/j.quaint.2009.08.010 ISI:000278676900016 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quaint.2009.08.010 |
container_title |
Quaternary International |
container_volume |
219 |
container_issue |
1-2 |
container_start_page |
168 |
op_container_end_page |
176 |
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1766315476084850688 |