Oxygen isotope partitioning between phosphate and carbonate in mammalian apatite

The oxygen isotope compositions of phosphate and structural carbonate in mammalian enamel and bone apatite are linked to that of body water at constant body temperature near 37°C, but the isotope systematics of oxygen in structural carbonate are not well understood. Using coupled measurements of the...

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Bibliographic Details
Published in:Geochimica et cosmochimica acta 1996-12, Vol.60 (24), p.5145-5148
Main Authors: Daniel Bryant, J., Koch, Paul L., Froelich, Philip N., Showers, William J., Genna, Bernard J.
Format: Article
Language:English
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Summary:The oxygen isotope compositions of phosphate and structural carbonate in mammalian enamel and bone apatite are linked to that of body water at constant body temperature near 37°C, but the isotope systematics of oxygen in structural carbonate are not well understood. Using coupled measurements of the oxygen isotope composition of structural carbonate and phosphate from horse tooth enamel, the apparent oxygen isotope fractionation factor between structural carbonate and body water is estimated to be 1.0263 ± 0.0014. These estimates provide a quantitative basis for using the oxygen isotope composition of structural carbonate in mammalian biogenic apatite for ecological, climatological, and physiological reconstruction.
ISSN:0016-7037
1872-9533
DOI:10.1016/S0016-7037(96)00308-0