(Table S1) Age determination of sediment core MD99-2251

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 provid...

Full description

Bibliographic Details
Main Authors: Ellison, Christopher RW, Chapman, Mark R, Hall, Ian R
Format: Dataset
Language:English
Published: PANGAEA 2006
Subjects:
Age
14C AMS
calibrated
dated
dated standard deviation
maximum/old
minimum/young
Calendar age
CALYPSO
Calypso Corer
DEPTH
sediment/rock
IMAGES V
Laboratory code/label
Marion Dufresne (1995)
MD114
MD99-2251
Rockall
Ice Sheet
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.829501
https://doi.org/10.1594/PANGAEA.829501
Description
Summary: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.

Similar Items