Cariaco Basin ODP1002 Color Reflectance and Bulk Elemental (Fe, Ti, Ca) Data: Readme file
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              World Data Center for Paleoclimatology, Boulder
                                and 
                   NOAA Paleoclimatology Program
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NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!!

NAME OF DATA SET: Cariaco Basin ODP1002 Color Reflectance and Bulk Elemental (Fe, Ti, Ca) Data

LAST UPDATE: 3/2001 (Original Receipt by WDCA Paleo)  
CONTRIBUTOR: L.C. Peterson, G.H. Haug, K.A. Hughen, U. Röhl.

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-020

SUGGESTED DATA CITATION: Peterson, L.C. et al., 2001, 
Cariaco Basin ODP1002 Color Reflectance and Bulk Elemental (Fe, Ti, Ca) Data, 
IGBP PAGES/World Data Center A for Paleoclimatology 
Data Contribution Series #2001-020.
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. 

ORIGINAL REFERENCE: 
Peterson, L.C., Haug, G.H., Hughen, K.A., and U. Röhl, 2000, 
Rapid changes in the hydrologic cycle of the tropical Atlantic 
during the last glacial. 
Science, 290, 1947-1951, December 8, 2000.


FUNDING SOURCES: National Science Foundation (USA); 
Deutsche Forschungsgemeinschaft (Germany).

GEOGRAPHIC REGION: Cariaco Basin, Venezuela
PERIOD OF RECORD: 90 KYrBP-present

LIST OF FILES: Readme.Peterson2000.txt (this file),
1002_550nm.xls, 1002xrf_24-60ka.xls (Microsoft Excel format)
1002_550nm.txt, 1002xrf_24-60ka.txt (tab-delimited ASCII format).



DESCRIPTION:
Measured color reflectance in the “green” wavelength (550 nm) of sediments 
from the upper 36 meters of ODP Hole 1002C (0-90 ka) in the Cariaco Basin 
(Venezuela), plus bulk sedimentary concentrations of Fe, Ti, and Ca 
between 24 ka and 60 ka as measured by profiling X-ray fluorescence scanner. 
Data presented here were used to construct Figures 1 and 2 of the 
Original Reference.

Location of ODP Hole 1002C
Latitude:  	10 deg 42.73 min N
Longitude: 	65 deg 10.18 min W
Water Depth:	893 m below sea level

Variable Names and Units

Files: 1002_550nm.xls or 1002_550nm.txt

Column 1:  Depth of measurement, in meters below sea floor (mbsf). 

Column 2:  Corrected depth, in meters below sea floor (mbsf). 
Depths here have been corrected for the effects of gas expansion 
and voids (gaps) in the recovered section.

Column 3:  Age, in thousands of years ago (ka).

Column 4:  Percent reflectance at 550 nm wavelength.

Column 5:  Five-point moving average of percent reflectance data (550 nm) 
from column 4. Smoothed data in this column were used in Figure 1 of the 
Original Reference.




Files: 1002xrf_24-60ka.xls or 1002xrf_24-60ka.txt

Column 1:  Depth of measurement, in meters below sea floor (mbsf). 

Column 2:  Corrected depth, in meters below sea floor (mbsf). 
Depths here have been corrected for the effects of gas expansion 
and voids (gaps) in the recovered section.

Column 3:  Age, in thousands of years ago (ka).

Column 4:  Bulk concentration of Ca, in counts per second (measured by scanning XRF).

Column 5:  Bulk concentration of Ti, in counts per second (measured by scanning XRF).

Column 6:  Bulk concentration of Fe, in counts per second (measured by scanning XRF).


Methods: See Original Reference for details of age model and analytical information.