Measurement of O 18 / O 16 ratios of total oxygen of carbonates

Details Measurement of O 18 / O 16 ratios of total oxygen of carbonates Measurement of O 18 / O 16 ratios of total oxygen of carbonates

Dec 1965

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965gecoa..29.1347s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 29, Issue 12, pp.1347-1353

Physics

71

Scientific paper

The commonly used phosphoric acid procedure for the determination, of oxygen isotope abundances in carbonates involves a large kinetic isotope effect. The value of the fractionation factor, , defined as: has been measured for several alkaline earth and transition metal carbonates. The value of 1000 In ranges from 9.9 to 11.2. The previously used assumption that calcite and dolomite have the same value of a leads to an overestimate of the dolomite-calcite oxygon isotope fractionation by 0.8 per mil.

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