Heterogeneity in titaniferous lunar basalts

Details Heterogeneity in titaniferous lunar basalts Heterogeneity in titaniferous lunar basalts

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976e%26psl..30...27w&link_type=abstract

Earth and Planetary Science Letters, vol. 30, no. 1, Apr. 1976, p. 27-36. Research supported by the Harvard University;

Computer Science

7

Basalt, Heterogeneity, Lunar Rocks, Petrology, Titanium, Chemical Properties, Crystallization, Dunite, Magma, Microstructure, Olivine, Petrography

Scientific paper

Small but real chemical differences exist between subsamples of fine-grained quench-textured titaniferous lunar basalts. The existence of different textural domains with different chemistries is thought to account for most of this variation. In addition to the textural domains, lunar sample 74275 has a population of olivine 'megacrysts' as well as dunite fragments. These materials are thought to be extraneous and to compromise the primary nature of 74275. Recognition of the small chemical variations present may aid in understanding some discrepancies in the experimental-petrology literature. However, these small variations have a distressing petrogenetic significance since they severely limit resolution in recognizing the number and depth of origin of primary magmas.

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