Mathematics – Logic
Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..35....1r&link_type=abstract
Earth and Planetary Science Letters, vol. 35, no. 1, May 1977, p. 1-13.
Mathematics
Logic
4
Basalt, Lunar Rocks, Mineralogy, Petrology, Potassium, Rare Earth Elements, Apollo 17 Flight, Chromites, Geochemistry, Lunar Crust, Lunar Maria, Olivine, Phosphorus, Pyroxenes, Volcanology
Scientific paper
The Apollo 17 KREEPy basalt is a unique lunar volcanic rock, observed only as clasts in the light friable breccia matrix (72275) of Boulder 1, Station 2 at Taurus-Littrow. Its status as a volcanic rock is confirmed by the absence of any meteoritic contamination, a lack of cognate inclusions or xenocrystal material, and low Ni contents in metal grains. The basalt was extruded 4.01 + or - 0.04 b.y. ago, approximately contemporaneously with the high-alumina mare basalts at Fra Mauro; shortly afterwards it was disrupted, probably by the Serenitatis impact, and its fragments emplaced in the South Massif. The basalt, which is quartz-normative and aluminous, is chemically and mineralogically intermediate between the Apollo 15 KREEP basalts and the high-alumina mare basalts in most respects. It consists mainly of plagioclase and pigeonitic pyroxene in approximately equal amounts, and 10-30% of mesostatis.
Ryder Graham
Stoeser Douglas B.
Wood John A.
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