NASA NTRS · 19900046407
Apollo 15 KREEP-poor impact melts
Abstract
Results are presented on the analysis of 18 fragments of the Apollo 15 KREEP-poor impact melt rock. This melt has gabbroic bulk composition, very low incompatible-element concentrations, and a slope in its heavy REE pattern that is distinct from that of KREEP. The melt has also the highest Ti content of LKFM impact melts from all highland sites. It is suggested that KREEP-poor impact melts may be basin-related melts which are mixtures of various Mg-suite noritic or gabbroic lower crustal rocks, and represent an early impact into the lower crust.
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Lindstrom, M. M., Marvin, U. B., Holmberg, B. B., Mittlefehldt, D. W.. 1990-01-01. Apollo 15 KREEP-poor impact melts. https://ntrs.nasa.gov/citations/19900046407
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