T. Guilderson D. Schrag 1999/08 World Data Center for Paleoclimatology Data Contribution Series 1999-042 Boulder World Data Center for Paleoclimatology, Boulder Nauru coral stable isotope timeseries. (166E, 0.5S, 14m bottom depth). Coral stable isotope analyses on untreated, low-speed drilled samples. Precision is ± 0.05 per mil as documented by an in-house homogenized coral standard, and presented relative to V-PDB (NBS-19 normalized). Oxygen isotope data has NOT been corrected for the acid fractionation difference ("acid-alpha") between standards (calcite) and coral samples (aragonite). Cores were taken from two ~2meter Porites corals on the north side of Nauru Island (166E 0.5S), 14m bottom depth, in July of 1995 by D. Schrag M. Moore. Nauru-1 has been identified as Porites australiensis, Nauru-2 is Porites spp. Cores were split and cleaned with distilled water. Samples were drilled using a low-speed drill along the major vertical growth axis. Nauru-1 (1.85 meters) was sampled sequentially at 1 mm increments for the upper 750 mm, and 5mm continous samples for the remainder. Nauru-2 (1.61 meters) was sampled continously at 2 mm increments. Data is presented to time. The long Nauru-1 record (Nauru WDCA pt_3) is presented as a quarterly interpolated record, the least common sampling resolution of the whole sequence. Paleoclimatic Research G2055 World Data Center for Paleoclimatology, Boulder http://www.ngdc.noaa.gov/paleo/corals.html 1 1891 1995 Publication Date Complete None Planned 166 166 -.05 -.05 CoRIS Theme Keywords Version 1.0 EARTH SCIENCE > Paleoclimate > Coral Records > delta 13C EARTH SCIENCE > Paleoclimate > Coral Records > delta 18O Numeric Data Sets > Paleoclimatology CoRIS Place Keywords Version 1.0 COUNTRY/TERRITORY > Nauru > Nauru > Nauru (00S166E0000) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Nauru > Nauru (00S166E0000) CoRIS Temporal Keywords Version 1.0 Holocene, Modern None Please cite original reference when using this data coral variable coral variable coral variable del13C delta 13C (per mil) Craig, H., 1957. Isotopic standards for mass spectrometric analysis of carbon dioxide. Geochimica Cosmochimica Acta, 12:113-140; Fairbanks, R.G., and R.E. Dodge, Annual periodicity of the O-18/O-16 and C-13/C-12 ratios in the coral Montastrea annularis, Geochimica et Cosmochimica Acta, 43, 1979. unknown unknown per mil 0.01 del18O delta 18O (per mil) relative to PDB Craig, H., 1957. Isotopic standards for mass spectrometric analysis of carbon dioxide. Geochimica Cosmochimica Acta, 12:113-140 unknown unknown per mil 0.01 NOAA Paleoclimatology Program Bruce Bauer Data Manager Mailing Address

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Boulder CO 80305-3328 U.S.A. (303) 497-6160 (303) 497-6958 (303) 497-6513 carissa.l.carter@noaa.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 No Constraints No Constraints