noaa-ocean-2538
Nordic Seas ice rafting during the Pliocene and Pleistocene
Jansen, E.; Fronval, T.; Rack, F.R.; Channell, J.E.T.
Nordic Seas ice rafting during the Pliocene and Pleistocene
2000-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/2538
Investigator
E.
Jansen
Investigator
T.
Fronval
Investigator
F.R.
Rack
Investigator
J.E.T.
Channell
earth science
paleoclimate
paleoceanography
ice rafted debris,null,null,count per gram,null,paleoceanography,null,null,N,>150 microns
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
lithology
geoscientificInformation
cal yr BP
cal yr BP
Complete
69.25
69.25
-12.7
-12.7
-1800
-1800
Ocean
Atlantic Ocean
North Atlantic Ocean
ODP 907>LATITUDE 69.25>LONGITUDE -12.7
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Jansen, E., T. Fronval, F. Rack, and J.E.T. Channell. 2000. Pliocene-Pleistocene ice rafting history and cyclicity in the Nordic Seas during the last 3.5 Myr. Paleoceanography 15(6):709-721.
A continuous 3.5 Myr IRD record was produced from Ocean Drilling Program (ODP) Site 907. A timescale based on magnetic polarity chrons, oxygen isotope stratigraphy (for the last 1Myr) and orbital tuning was developed. The record documents a stepwise inception of large-scale glacial cycles in the Nordic Seas region, the first being a marked expansion of the Greenland ice sheet at 3.3 Ma. A second step occurred at 2.74 Ma by an expansion of large scale ice sheets in the Northern Hemisphere. Ice sheet variability around the Nordic Seas was tightly coupled to global ice volume over the past 3.3 Myr. Between 3 and 1 Ma, most of the variance of the IRD signal is in the 41 kyr band, whereas the last 1 Myr is characterized by stronger 100 kyr variance. The Gamma Ray Porosity Evaluator (GRAPE) density record is closely linked with IRD variations and documents sub orbital variability resembling the late Quaternary Heinrich/Bond cycles.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jansen2000
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp907-tab.txt
USA/NOAA
DIF
Version 9.8.4
2019-05-30
2019-05-30