Comments on stable isotope geothermometry: the system quartz-water

Details Comments on stable isotope geothermometry: the system quartz-water Comments on stable isotope geothermometry: the system quartz-water

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..84..406b&link_type=abstract

Earth and Planetary Science Letters, Volume 84, Issue 4, p. 406-414.

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Scientific paper

We show that the results of quartz-water partial oxygen exchange experiments under hydrothermal conditions are determined primarily by exchange between water and dissolved silica species and not by diffusion in the solid. Hence, these experiments do not provide an accurate value of the variation of fractionation with temperature but only a rough indication of it. We conclude that the Bottinga and Javoy [1] equation, relying on this type of information and on the precise calculation of the coefficient A ( = -3.7) in the thermometric equation 1000 ln α = A + B × 106/T2, is not seriously questioned by these 17O, 18O partial exchange experiments.

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