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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ftunivcardiff:oai:https://orca.cardiff.ac.uk:7537 2023-05-15T14:46:37+02:00 Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge O'Regan, Matthew St John, K. Moran, K. Backman, J. King, J. Haley, B. A. Jakobsson, M. Frank, M. Rohl, U. 2010-06 https://orca.cardiff.ac.uk/id/eprint/7537/ https://doi.org/10.1016/j.quaint.2009.08.010 unknown O'Regan, Matthew, St John, K., Moran, K., Backman, J., King, J., Haley, B. A., Jakobsson, M., Frank, M. and Rohl, U. 2010. Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge. Quaternary International 219 (1-2) , pp. 168-176. 10.1016/j.quaint.2009.08.010 https://doi.org/10.1016/j.quaint.2009.08.010 doi:10.1016/j.quaint.2009.08.010 QE Geology Article PeerReviewed 2010 ftunivcardiff https://doi.org/10.1016/j.quaint.2009.08.010 2022-09-25T20:16:07Z 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 Article in Journal/Newspaper Arctic Arctic Ocean Lomonosov Ridge North Atlantic Cardiff University: ORCA (Online Research @ Cardiff) Arctic Arctic Ocean Quaternary International 219 1-2 168 176 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology O'Regan, Matthew St John, K. Moran, K. Backman, J. King, J. Haley, B. A. Jakobsson, M. Frank, M. Rohl, U. Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge |
topic_facet |
QE Geology |
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 |
format |
Article in Journal/Newspaper |
author |
O'Regan, Matthew St John, K. Moran, K. Backman, J. King, J. Haley, B. A. Jakobsson, M. Frank, M. Rohl, U. |
author_facet |
O'Regan, Matthew St John, K. Moran, K. Backman, J. King, J. Haley, B. A. Jakobsson, M. Frank, M. Rohl, U. |
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 |
publishDate |
2010 |
url |
https://orca.cardiff.ac.uk/id/eprint/7537/ https://doi.org/10.1016/j.quaint.2009.08.010 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Lomonosov Ridge North Atlantic |
genre_facet |
Arctic Arctic Ocean Lomonosov Ridge North Atlantic |
op_relation |
O'Regan, Matthew, St John, K., Moran, K., Backman, J., King, J., Haley, B. A., Jakobsson, M., Frank, M. and Rohl, U. 2010. Plio-Pleistocene trends in ice rafted debris on the Lomonosov Ridge. Quaternary International 219 (1-2) , pp. 168-176. 10.1016/j.quaint.2009.08.010 https://doi.org/10.1016/j.quaint.2009.08.010 doi:10.1016/j.quaint.2009.08.010 |
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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1766317827832152064 |