noaa-ocean-10531
Brazil Margin LGM and Holocene Benthic Foraminiferal Cadmium Data
Makou, M.C.; Oppo, D.W.; Curry, W.B.
Brazil Margin LGM and Holocene Benthic Foraminiferal Cadmium Data
2011-02-10
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10531
Investigator
M.C.
Makou
Investigator
D.W.
Oppo
Investigator
W.B.
Curry
earth science
paleoclimate
paleoceanography
notes,null,null,null,null,paleoceanography,null,null,C,foraminiferal sample
earth science
paleoclimate
climate reconstructions|paleoceanography
cadmium,cadmium/calcium,null,nanomole per kilogram,null,climate reconstructions|paleoceanography,null,null,N,seawater cadmium
earth science
paleoclimate
paleoceanography
depth,null,null,meter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
delta 13C,delta 13C,null,per mil,null,climate reconstructions|paleoceanography,null,null,N,estimated delta 13C due to air/sea exchange of CO2
earth science
paleoclimate
paleoceanography
latitude,null,null,degree south,null,paleoceanography,null,null,C,null
earth science
paleoclimate
paleoceanography
longitude,null,null,degree west,null,paleoceanography,null,null,C,null
earth science
paleoclimate
paleoceanography
delta 13C,benthic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
cadmium/calcium,benthic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,sample depth
earth science
paleoclimate
paleoceanography
notes,null,null,null,null,paleoceanography,null,null,C,core ID
earth science
paleoclimate
paleocean
geochemistry
geoscientificInformation
Meridional Overturning Circulation (MOC)
21000 cal yr BP
18000 cal yr BP
Complete
-27.6972
-26.6807
-46.494
-46.4487
-1627
-441
Ocean
Atlantic Ocean
South Atlantic Ocean
17JPC>LATITUDE -27.6972>LONGITUDE -46.494
Ocean
Atlantic Ocean
South Atlantic Ocean
14GGC>LATITUDE -26.6807>LONGITUDE -46.4487
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
Makou, M.C., D.W. Oppo, and W.B. Curry. 2010.
South Atlantic intermediate water mass geometry
for the last glacial maximum from foraminiferal Cd/Ca.
Paleoceanography 25, PA4101, doi:10.1029/2010PA001962.
Paleoceanographic studies using benthic foraminiferal Cd
as a nutrient tracer have provided a robust means of
reconstructing glacial Atlantic Ocean water mass geometry,
but a paucity of data from the South Atlantic above 1200 m
has limited investigation of Antarctic Intermediate Water
(AAIW) configuration and formation. A new Cd depth profile
from Brazil margin sediments suggests that AAIW penetrated
northward at 1100 m to at least 27°S in the glacial Atlantic.
It exhibited substantially reduced d13Cas values, confirming
preliminary evidence that this AAIW was unique to the glacial
Atlantic and that it formed differently than today, with less
atmospheric contact.
STUDY NOTES: Benthic foraminiferal Cd results for a Brazil margin sediment
depth transect. Data are provided for the last glacial maximum (LGM)
and core top sediments. Individual core locations, sample depths,
and the type of foraminifera used are provided, and Cd composition
is reported as Cd/Ca and CdW. Foraminiferal carbon isotopic results
from previous investigations were used to calculate the portion of
the carbon isotopic signal arising from air/sea exchange (d13Cas)
of carbon dioxide (see references in cited publication).
The reported water depths have not been corrected for reduced LGM
sea level. Core top Cd and d13Cas results for cores 10 GGC and 33 GGC
are considered erroneous because relative standard deviations for
multiple analyses were > 20%. See Makou et al. 2010 for further
discussion of the results.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/makou2010b/makou2010b.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/makou2010b/makou2010b.xls
USA/NOAA
DIF
Version 9.8.4
2019-06-06
2019-06-06