Isotopic and REE studies of lunar basalt 12038 - Implications for petrogenesis of aluminous mare basalts

Details Isotopic and REE studies of lunar basalt 12038 - Implications for petrogenesis of aluminous mare basalts Isotopic and REE studies of lunar basalt 12038 - Implications for petrogenesis of aluminous mare basalts

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..55..335n&link_type=abstract

Earth and Planetary Science Letters, vol. 55, no. 3, Nov. 1981, p. 335-355.

Computer Science

24

Basalt, Chemical Composition, Isotopes, Lunar Rocks, Petrology, Rare Earth Elements, Abundance, Aluminum Compounds, Chemical Analysis, Magma, Planetary Evolution, Stratigraphy, Data, Landing Sites, Stratigraphy, Feldspar, Comparisons, Abundances, Origin, Moon, Basalts, Isotopes, Rare Earth Elements, 12038, Source, Samples, Lunar, Petrogenesis, Aluminum, Composition, Mantles, Apollo 12, Strontium, Neodymium, Samarium, Crystallization, Isochrons, Mare Basalts, Isotopic Ratios, Dating Techniques, Evolution, Mo

Scientific paper

Sr, Nd, and Sm isotopic studies of lunar basalt 12038, one of the so-called aluminous mare basalts, are reported. The evolution of the Sr and Nd isotopic compositions and the rare earth element (REE) abundances is successfully modeled within the framework of the model developed by Nyquist et al. (1977, 1979) for Apollo 12 olivine-pigeonite and ilmenite basalts. It is pointed out that the isotopic and trace element features of 12038 can by modeled as produced by partial melting of a cumulate mantle source which crystallized from a lunar magma ocean with a chondrite-normalized REE pattern of constant negative slope. Chondrite-normalized La/Yb is equal to 2.2 for this hypothetical magma ocean pattern.

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