The Apollo 15 yellow impact glasses: chemistry, petrology, and exoticorigin.

Details The Apollo 15 yellow impact glasses: chemistry, petrology, and exoticorigin. The Apollo 15 yellow impact glasses: chemistry, petrology, and exoticorigin.

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..159d&link_type=abstract

Journal of Geophysical Research, Vol. 87, Suppl., p. A159 - A170

Mathematics

Logic

9

Moon Samples:Petrology

Scientific paper

The Apollo 15 yellow impact glasses are characterized by moderate TiO2 (≡4.8%) and high abundances of the large ion lithophile elements (e.g., K, P, Hf, Th, REE). Since the chemistry of these glasses cannot be duplicated by any combination of local components presently known to occur at the Apollo 15 landing site, these yellow glasses seem to be exotic to that area. Chemical and petrologic constraints suggest that these samples were produced by impact melting of an immature mare regolith developed upon an unusual variety of mare basalt. The authors speculate that the target basalts were the youngest lava flows known to exist on the moon.

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