Marine Science Faculty Publications
Document Type
Article
Publication Date
2-18-2006
Keywords
Laurentide Ice Sheet, meltwater, marine isotope stage 3, Gulf of Mexico
Digital Object Identifier (DOI)
https://doi.org/10.1029/2005PA001186
Abstract
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 δ18O 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.
Rights Information
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Paleoceanography and Paleoclimatology, v. 21, issue 1, art. PA1006
Copyright 2006 by the American Geophysical Union.
Scholar Commons Citation
Hill, Heather W.; Flower, Benjamin P.; Quinn, Terrence M.; Hollander, David J.; and Guilderson, Thomas P., "Laurentide Ice Sheet Meltwater and Abrupt Climate Change During the Last Glaciation" (2006). Marine Science Faculty Publications. 25.
https://digitalcommons.usf.edu/msc_facpub/25
