Geothermometers for olivine-melt and pyroxene-melt equilibria in lunar basalts

Details Geothermometers for olivine-melt and pyroxene-melt equilibria in lunar basalts Geothermometers for olivine-melt and pyroxene-melt equilibria in lunar basalts

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989geokh.....1418a&link_type=abstract

Geokhimiia (ISSN 0016-7525), Oct. 1989, p. 1418-1427. In Russian.

Other

Crystallization, Lunar Rocks, Melts (Crystal Growth), Olivine, Pyroxenes, Temperature Distribution, Chemical Equilibrium, Mineralogy, Regression Analysis, Selenology, Temperature Dependence, Titanium Compounds

Scientific paper

Data on the distribution of petrogenic elements between the Fe-Mg-silicates in lunar basalt melts were used to derive equilibrium equations for olivine-melt, augite-melt, and pigeonite-melt. Using these equations as geothermometers, it was possible to calculate temperatures of crystallization of lunar olivines and pyroxenes with an accuracy of + or - 10 C. The contents of femic phases could be calculated with an accuracy of 1-2 mol pct Fo. New augite-melt and pigeonite-melt geothermometers for terrestrial basalts are proposed.

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