Appora, Irma and Eiler, John M. and Stolper, Edward (2000) Experimental Determination of Oxygen-isotope Fractionations Between CO_2 Vapour and Soda-melilite Melt. Journal of Conference Abstracts, 5 (2). p. 149. ISSN 1362-0886. https://resolver.caltech.edu/CaltechAUTHORS:20130710-074438737
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Abstract
Oxygen-isotope measurements of igneous rocks and minerals can constrain their origin and evolution, but they are interpretable only in light of known ^(18)O/^(16)O fractionations among co-existing silicate melt, minerals, and magmatic volatiles. There have been many experimental studies of mineral-mineral and mineral-fluid fractionations but few involving silicate melt, particularly basic and ultrabasic melts relevant to study of mantle geochemistry and basaltic volcanism (Muehlenbachs & Kushiro, 1974). Consequently, fractionations involving such melts are generally estimated based on the systematics of differences in δ^(18)O between phenocrysts and co-existing glass or groundmass. Estimates of this type, although useful, are insufficient for interpreting the usually subtle oxygen isotope variations observed in many basaltic suites. Therefore, we have undertaken a series of experiments examining oxygen-isotope fractionations involving basic silicate melts. We report here measurements of fractionations between the CO_2 and soda-melilite melt. This composition has been used previously as an analog for basic silicate melts.
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| Additional Information: | © 2000 Cambridge Publications. | |||||||||
| Issue or Number: | 2 | |||||||||
| Record Number: | CaltechAUTHORS:20130710-074438737 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130710-074438737 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 39273 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 10 Jul 2013 18:28 | |||||||||
| Last Modified: | 03 Oct 2019 05:05 |
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