North Atlantic Pleistocene Isotope RecordsEntry ID: NOAA_NCDC_PALEO_2004-020
Abstract: Geochemical profiles from the North Atlantic Ocean suggest that the vertical
d13C structure of the water column at intermediate depths did not change
significantly between glacial and interglacial time over much of the
Pleistocene, despite large changes in ice volume and iceberg delivery from
nearby landmasses. The most anomalous d13C profiles are from the extreme
interglaciations of the late ... Pleistocene. This compilation of data suggests
that, unlike today (an extreme interglaciation), the two primary sources of
northern deep water, Norwegian-Greenland Sea and Labrador Sea/subpolar North
Atlantic, had different characteristic d13C values over most of the
Pleistocene. We speculate that the current open sea ice conditions in the
Norwegian-Greenland Sea are a relatively rare occurrence and that the
high-d13C deep water that forms in this region today is geologically unusual.
If northern source deep waters can have highly variable d13C, then this
likelihood must be considered when inferring past circulation changes from
Data Set Citation
Dataset Originator/Creator: Maureen E. Raymo
Dataset Title: North Atlantic Pleistocene Isotope Records
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2004-020
Dataset Release Date: 8/2004
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2004-020
Other Citation Details: NOAA/NCDC Paleoclimatology ProgramOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/ray...
Paleo Temporal Coverage
ISO Topic Category
Data Set Progress
Distribution Media: ftp
Distribution Format: text
Email: raymo at bu.edu
Dept. of Earth Sciences Boston University 685 Commonwealth Avenue
Province or State: MA
Postal Code: 02215
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Creation and Review Dates
DIF Creation Date: 2006-12-20
Last DIF Revision Date: 2007-05-31