South Atlantic Authigenic Uranium Data: Readme file
-----------------------------------------------------------------------
               World Data Center for Paleoclimatology, Boulder
                                  and
                     NOAA Paleoclimatology Program
-----------------------------------------------------------------------
NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!


NAME OF DATA SET: South Atlantic Authigenic Uranium Data
LAST UPDATE: 10/2001 (Original Receipt by WDC Paleo)
CONTRIBUTOR:  Zanna Chase, Monterey Bay Aquarium Research Institute 

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-072

SUGGESTED DATA CITATION: Chase, Z., et al, 2001, 
South Atlantic Authigenic Uranium Data,  
IGBP PAGES/World Data Center for Paleoclimatology 
Data Contribution Series # 2001-072.
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCE: 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, October 2001.

GEOGRAPHIC REGION: Southern Ocean, Atlantic sector 
PERIOD OF RECORD:  past ~150,000 years

FUNDING SOURCE:  National Science Foundation (USA) 
Grants OCE93-14634 and OPP95-30379.	

LIST OF FILES:  Readme_chase2001.txt (this file),
rc11-78_u_th.txt, rc11-83_u_th.txt, rc12-294_u_th.txt,
rc13-243_u_th.txt, tn-057-20_u_th.txt, vm22_177_u_th.txt,
vm14-65_u_th.txt, vm22-109_u_th.txt, vm22_38_u_th.txt,
vm24-221_u_th.txt, vm24-229_u_th.txt, vm24-240_u_th.txt,
vm27-196_u_th.txt, vm27-197_u_th.txt
(space-delimited text files with 2 header lines).

DESCRIPTION:
Down-core measurements of Thorium-232 and Uranium-238 from 
sediment cores of the South Atlantic. Each file contains data 
from one core, including the lat/lon and bottom depth of the site. 
Also included is the 1-sigma error ("sig") of each measurement. 
Refer to Table 1 in the original manuscript for further information 
about these cores. Authigenic U can be derived from total U (reported) 
by subtracting a detrital component, proportional to the Thorium-232 
concentration. In the original publication we applied a 238U/232Th 
detrital ratio of 0.197 by weight.

All analyses were done by isotope-dilution ICP-MS at the 
Lamont-Doherty Earth Observatory between 1995 and 1997.