noaa-ocean-2590
South Atlantic Authigenic Uranium Data
Chase, Z.; Anderson, R.F.; Fleisher, M.Q.
South Atlantic Authigenic Uranium Data
2001-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/2590
Investigator
Z.
Chase
Investigator
R.F.
Anderson
Investigator
M.Q.
Fleisher
earth science
paleoclimate
paleoceanography
232Th,sediment,null,dimensionless,null,paleoceanography,normalized,null,N,null
earth science
paleoclimate
paleoceanography
organic carbon,sediment,null,weight percent,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
238U,sediment,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
lithology
earth science
paleoclimate
paleocean
age control
geoscientificInformation
cal yr BP
cal yr BP
Complete
-50.85
-7.75
-34.25
9.8
-4825
-733
Ocean
Atlantic Ocean
South Atlantic Ocean
RC11-78>LATITUDE -50.85>LONGITUDE -9.87
Ocean
Atlantic Ocean
South Atlantic Ocean
VM22-177>LATITUDE -7.75>LONGITUDE -14.62
Ocean
Atlantic Ocean
South Atlantic Ocean
VM22-109>LATITUDE -41.97>LONGITUDE -.25
Ocean
Atlantic Ocean
South Atlantic Ocean
RC11-83>LATITUDE -42.6>LONGITUDE 9.8
Ocean
Atlantic Ocean
South Atlantic Ocean
V22-38>LATITUDE -9.55>LONGITUDE -34.25
Ocean
Atlantic Ocean
South Atlantic Ocean
VM14-65>LATITUDE -41>LONGITUDE -8
Ocean
Atlantic Ocean
South Atlantic Ocean
VM24-229>LATITUDE -34.45>LONGITUDE -10.6
Ocean
Atlantic Ocean
South Atlantic Ocean
VM24-221>LATITUDE -32.02>LONGITUDE 2.82
Ocean
Atlantic Ocean
South Atlantic Ocean
VM27-196>LATITUDE -36.33>LONGITUDE -7.57
Ocean
Atlantic Ocean
South Atlantic Ocean
VM27-197>LATITUDE -36.67>LONGITUDE -6.27
Ocean
Atlantic Ocean
South Atlantic Ocean
RC12-294>LATITUDE -37.27>LONGITUDE -10.1
Ocean
Atlantic Ocean
South Atlantic Ocean
RC13-243>LATITUDE -36.9>LONGITUDE 1.33
Ocean
Atlantic Ocean
South Atlantic Ocean
TN057-20>LATITUDE -42.1>LONGITUDE .6
Ocean
Atlantic Ocean
South Atlantic Ocean
VM24-240>LATITUDE -31.72>LONGITUDE -28.2
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
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
Chase, Z., R.F. Anderson, and M.Q. Fleisher. 2001. Evidence from authigenic uranium for increased productivity of the glacial Subantarctic Ocean. Paleoceanography 16(5):468-478.
Authigenic uranium is precipitated in reducing sediments and therefore responds both to changes in particulate organic carbon flux to the sediment and to changes in the oxygen concentration of bottom waters. By examining a large number of cores over a wide latitudinal and depth range in the Atlantic sector of the Southern Ocean, we hope to distinguish between a predominantly productivity-driven authigenic U signal and a circulation or sediment-focusing signal. We find little to no authigenic U in Holocene sediments throughout the South Atlantic Ocean. Glacial sediments north of ~40 °S lack authigenic U, whereas sediments from the Subantarctic Zone show substantial enrichments in authigenic U relative to the Holocene (up to ~5.3 ppm). The widespread distribution of glacial U enrichment, even in cores with no glacial-interglacial change in mass accumulation rate, implies that U deposition was not caused by an increased supply of organic carbon via sediment focusing. Authigenic U and organic carbon in a shallow core (~ 1000 m) from the Subantarctic region show the same glacial increase found in the deep cores. Because this site was well ventilated during the Last Glacial Maximum, its record provides further evidence that increased glacial productivity of the Subantarctic region contributed to the high concentrations of authigenic U found in the glacial sections of deep cores.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/rc11-83z-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r12-294z-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm24-221-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm27-197-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm22-177-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm27-196-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm14-65-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tn057-20-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/rc11-78z-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r13-243z-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm22-38-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chase2001
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm24-229-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm24-240-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm22-109-tab.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11