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  • 1
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    (Table S1) Age determination of sediment cores from the Labrador Sea
    PANGAEA
    In:  Supplement to: Hoogakker, Babette A A; Chapman, Mark R; McCave, I Nick; Hillaire-Marcel, Claude; Ellison, Christopher RW; Hall, Ian R; Telford, Richard J (2011): Dynamics of North Atlantic Deep Water masses during the Holocene. Paleoceanography, 26(4), PA4214, https://doi.org/10.1029/2011PA002155
    Details
    Publication Date: 2023-06-27
    Description: High resolution flow speed reconstructions of two core sites located on Gardar Drift in the northeast Atlantic Basin and Orphan Knoll in the northwest Atlantic Basin reveal a long-term decrease in flow speed of Northeast Atlantic Deep Water (NEADW) after 6,500 years. Benthic foraminiferal oxygen isotopes of sites currently bathed in NEADW show a 0.2per mil depletion after 6,500 years, shortly after the start of the development of a carbon isotope gradient between NEADW and Norwegian Sea Deep Water. We consider these changes in near-bottom flow vigor and benthic foraminiferal isotope records to mark a significant reorganization of the Holocene deep ocean circulation, and attribute the changes to a weakening of NEADW flow during the mid to late Holocene that allowed the shoaling of Lower Deep Water and deeper eastward advection of Labrador Sea Water into the northeast Atlantic Basin.
    Keywords: Age, 14C AMS; Age, calibrated; Age, dated; Age, dated material; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; BC; Box corer; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; Event label; HU91-045-093; IMAGES I; IMAGES V; Laboratory code/label; Labrador Sea; Marion Dufresne (1995); MD101; MD114; MD952024; MD95-2024; MD99-2251; Orphan Knoll; Rockall
    Type: Dataset
    Format: text/tab-separated-values, 380 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    (Table S1) Age determination of sediment core MD99-2251
    PANGAEA
    In:  Supplement to: Ellison, Christopher RW; Chapman, Mark R; Hall, Ian R (2006): Surface and deep ocean interactions during the Cold Climate Event 8200 years ago. Science, 312(5782), 1929-1932, https://doi.org/10.1126/science.1127213
    Details
    Publication Date: 2023-06-27
    Description: Evidence from a North Atlantic deep-sea sediment core reveals that the largest climatic perturbation in our present interglacial, the 8200-year event, is marked by two distinct cooling events in the subpolar North Atlantic at 8490 and 8290 years ago. An associated reduction in deep flow speed provides evidence of a significant change to a major downwelling limb of the Atlantic meridional overturning circulation. The existence of a distinct surface freshening signal during these events strongly suggests that the sequenced surface and deep ocean changes were forced by pulsed meltwater outbursts from a multistep final drainage of the proglacial lakes associated with the decaying Laurentide Ice Sheet margin.
    Keywords: Age, 14C AMS; Age, calibrated; Age, dated; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES V; Laboratory code/label; Marion Dufresne (1995); MD114; MD99-2251; Rockall
    Type: Dataset
    Format: text/tab-separated-values, 138 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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