Punta Pitt Coral Data Set: Readme file
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                   NOAA Paleoclimatology Program
                               and
              World Data Center A - for Paleoclimatology
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NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!!

NAME OF DATA SET: Punta Pitt Coral Data Set
LAST UPDATE: 8/1995 (Original Receipt by WDCA Paleo)  

CONTRIBUTOR: J. E. Cole, University of Colorado

IGBP PAGES/WDCA Data Contribution Series #: 1993-014 

SUGGESTED DATA CITATION: Cole, J., 1993, Punta Pitt Coral Data Set. 
IGBP PAGES/World Data Center-A for Paleoclimatology 
Data Contribution Series # 1993-014.  
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCES:
Shen, G. T., J. E. Cole, D. W. Lea, L. J. Linn, T. A. McConnaughey, 
and R.G. Fairbanks, Surface ocean variability at Galapagos from 1936-1982:
Calibration of geochemical tracers in corals, Paleoceanography,7,563-588, 1992a.

Lea, D.W., G.T. Shen, and E.A. Boyle, Coralline barium records temporal
variability in equatorial Pacific upwelling, Nature, 340, 373-376.

GEOGRAPHIC REGION: Galapagos Islands 
PERIOD OF RECORD: 1936-1982

LIST OF FILES: ptapitt.dat, galapa.dat

DESCRIPTION:
Site: Punta Pitt, Isla San Cristobal, Galapagos Islands, Ecuador
(0 40'S, 89 10'W)
Water depth 14m
Coral species Pavona clavus
Time span: 1936-1982.5 at quarterly resolution (missing data from 1950)

Galapa.dat:
File contains Ba/Ca data (in mmol/mol) presented by Lea et al. (1989).
Samples were measured at the Massachusetts Institute of Technology by D. Lea. 
Ba determinations were performed on a VG PlasmaQuad inductively coupled 
plasma mass spectrometer, and Ca was determined by flame atomic absorption. 
Measurement precision is 1% for Ba/Ca. Ages for samples were assigned on the basis 
of well-defined density banding. Annual growth averaged 11mm/yr.

PtaPitt.Dat:
File contains data presented by Shen et al. (1992a). Table includes d18O,
d13C, Cd/Ca, Mn/Ca, and Ba/Ca data from a 2m coral head and, for
comparison, SST records from Academy Bay (Galapagos; 0 40'S, 90 20'W) and
Puerto Chicama (Peru; 8 S, 80 W). All coral measurements derive from the
same samples, which were treated as described in Shen et al. (1992a).
Stable isotopes were measured at Lamont-Doherty Earth Observatory by 
J. Cole and R. Fairbanks on a Finnigan MAT-251 mass spectrometer with
automated Carousel-48 carbonate device; values are in standard per mil
notation relative to PDB. Cd/Ca and Mn/Ca were measured at the University
of Washington by G. Shen and L. Linn on a Hitachi Z-9000 multichannel
atomic absorption spectrophotometer. Ba/Ca was measured at the University
of California/Santa Barbara by D. Lea on a VG Elemental PQ2+ inductively
coupled plasma mass spectrometer. Measurement precisions are as follows:  
0.08   d18O;  0.04   d13C;  9.8% for Cd/Ca;  6.6% for Mn/Ca;  1% for Ba/Ca.
Ages for samples were assigned on the basis of well-defined density
banding, assuming that the base of the dense band corresponds to February
and that extension rates between these points are linear. Coral
measurements were made at quarterly resolution. SST records were averaged
from monthly resolution to quarterly based on the following 3-month
groupings: Feb-Mar-April, May-June-July, Aug-Sep-Oct, and Nov-Dec-Jan.