(Table 1) Age determination of sediment core MD02-2551

DOI

A leading hypothesis to explain abrupt climate change during the last glacial cycle calls on fluctuations in the margin of the North American Laurentide Ice Sheet (LIS), which may have routed fresh water between the Gulf of Mexico (GOM) and the North Atlantic, affecting North Atlantic Deep Water variability and regional climate. Paired measurements of d18O and Mg/Ca of foraminiferal calcite from GOM sediments reveal five episodes of LIS meltwater input from 28 to 45 thousand years ago (ka) that do not match the millennial-scale Dansgaard-Oeschger warmings recorded in Greenland ice. We suggest that summer melting of the LIS may occur during Antarctic warming and likely contributed to sea level variability during marine isotope stage 3.

Supplement to: Hill, Heather W; Flower, Benjamin P; Quinn, Terrence Michael; Hollander, David J; Guilderson, Thomas P (2006): Laurentide Ice Sheet meltwater and abrupt climate change during the last glaciation. Paleoceanography, 21(1), PA1006

Identifier
DOI https://doi.org/10.1594/PANGAEA.834984
Related Identifier https://doi.org/10.1029/2005PA001186
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.834984
Provenance
Creator Hill, Heather W; Flower, Benjamin P; Quinn, Terrence Michael ORCID logo; Hollander, David J; Guilderson, Thomas P ORCID logo
Publisher PANGAEA
Publication Year 2006
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 90 data points
Discipline Earth System Research
Spatial Coverage (-91.346 LON, 26.946 LAT); Orca Basin