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Quaternary Arctic Ocean sea ice variations and radiocarbon reservoir age corrections

Hanslik, Daniela; Jakobsson, Martin; Backman, Jan; Björck, Svante LU ; Sellen, Emma; O'Regan, Matt; Fornaciari, Eliana and Skog, Göran LU (2010) In Quaternary Science Reviews 29(25-26). p.3430-3441
Abstract
A short sediment core from a local depression forming an intra basin on the Lomonosov Ridge, was retrieved during the Healy-Oden Trans-Arctic Expedition 2005 (HOTRAX). It contains a record of the Marine Isotope Stages (MIS) 1-3 showing exceptionally high abundances of calcareous microfossils during parts of MIS 3. Based on radiocarbon dating, linear sedimentation rates of 7-9 cm/ka persist during the last deglaciation. The Last Glacial Maximum (LGM) is partly characterized by a hiatus. Planktic foraminiferal abundance variations of Neogloboquadrina pachyderma sinistral and calcareous nannofossils reflect changes in Arctic Ocean summer sea ice coverage and probably inflow of subpolar North Atlantic water. Calibration of the radiocarbon... (More)
A short sediment core from a local depression forming an intra basin on the Lomonosov Ridge, was retrieved during the Healy-Oden Trans-Arctic Expedition 2005 (HOTRAX). It contains a record of the Marine Isotope Stages (MIS) 1-3 showing exceptionally high abundances of calcareous microfossils during parts of MIS 3. Based on radiocarbon dating, linear sedimentation rates of 7-9 cm/ka persist during the last deglaciation. The Last Glacial Maximum (LGM) is partly characterized by a hiatus. Planktic foraminiferal abundance variations of Neogloboquadrina pachyderma sinistral and calcareous nannofossils reflect changes in Arctic Ocean summer sea ice coverage and probably inflow of subpolar North Atlantic water. Calibration of the radiocarbon ages, using modeled reservoir corrections from previous studies and the microfossil abundance record of the studied core, results in marine reservoir ages of 1400 years or more, at least during the last deglaciation. Paired benthic-planktic radiocarbon dated foraminiferal samples indicate a slow decrease in age difference between surface and bottom waters from the Lateglacial to the Holocene, suggesting circulation and ventilation changes. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Quaternary Science Reviews
volume
29
issue
25-26
pages
3430 - 3441
publisher
Elsevier
external identifiers
  • wos:000284724400007
  • scopus:78049447426
ISSN
0277-3791
DOI
10.1016/j.quascirev.2010.06.011
project
MERGE
language
English
LU publication?
yes
id
521d44cb-8902-4c33-9b15-38eb2e20b06b (old id 1752051)
date added to LUP
2010-12-29 15:11:29
date last changed
2018-05-29 09:55:49
@article{521d44cb-8902-4c33-9b15-38eb2e20b06b,
  abstract     = {A short sediment core from a local depression forming an intra basin on the Lomonosov Ridge, was retrieved during the Healy-Oden Trans-Arctic Expedition 2005 (HOTRAX). It contains a record of the Marine Isotope Stages (MIS) 1-3 showing exceptionally high abundances of calcareous microfossils during parts of MIS 3. Based on radiocarbon dating, linear sedimentation rates of 7-9 cm/ka persist during the last deglaciation. The Last Glacial Maximum (LGM) is partly characterized by a hiatus. Planktic foraminiferal abundance variations of Neogloboquadrina pachyderma sinistral and calcareous nannofossils reflect changes in Arctic Ocean summer sea ice coverage and probably inflow of subpolar North Atlantic water. Calibration of the radiocarbon ages, using modeled reservoir corrections from previous studies and the microfossil abundance record of the studied core, results in marine reservoir ages of 1400 years or more, at least during the last deglaciation. Paired benthic-planktic radiocarbon dated foraminiferal samples indicate a slow decrease in age difference between surface and bottom waters from the Lateglacial to the Holocene, suggesting circulation and ventilation changes. (C) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Hanslik, Daniela and Jakobsson, Martin and Backman, Jan and Björck, Svante and Sellen, Emma and O'Regan, Matt and Fornaciari, Eliana and Skog, Göran},
  issn         = {0277-3791},
  language     = {eng},
  number       = {25-26},
  pages        = {3430--3441},
  publisher    = {Elsevier},
  series       = {Quaternary Science Reviews},
  title        = {Quaternary Arctic Ocean sea ice variations and radiocarbon reservoir age corrections},
  url          = {http://dx.doi.org/10.1016/j.quascirev.2010.06.011},
  volume       = {29},
  year         = {2010},
}