Other
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..47...21g&link_type=abstract
Earth and Planetary Science Letters, vol. 47, no. 1, Mar. 1980, p. 21-33.
Other
16
Basalt, Cooling, Crystal Structure, Liquid Phases, Lunar Rocks, Phase Transformations, Pyroxenes, Carbon, Chemical Composition, Iron, Magnesium, Silicates, Tables (Data), Temperature Effects, Time Dependence, Titanium, Moon, High Titanium Basalts, Augite, Partitioning, Cooling Rate, Major Elements, Minor Elements, Melts, Samples, Lunar, 10017, 75055, Comparisons, Kinetics, Composition, Experiments, Data, Temperatures, Phases, Pyroxenes, Chemistry, Crystals, Liquids, Procedure
Scientific paper
The partitioning of major and minor elements between augite and melt was determined as a function of cooling rate for two high-titanium basalt compositions. The results of this study of lunar rock systems 10017 and 75055 were compared with the results of other kinetic studies of augite-liquid partitioning in other rock systems. It was found that the partitioning of major elements (i.e., Ca, Fe, Mg) is essentially rate independent and is insensitive to bulk rock composition and to the nature and order of appearance of coexisting phases for cooling rates of less than 100 C/hr. The partitioning behavior of minor elements (i.e., Al, Cr, Ti) for the same range of cooling rates is complex, being dependent on cooling rate and bulk rock composition. Consideration of these factors is important when augite chemistry and/or partitioning behavior are used in modeling certain magmatic processes or in estimating the thermal history of basaltic rocks.
Gamble R. P.
Taylor Lawrence A.
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