A composite clast of ferroan-anorthosite-suite rocks from lunar breccia 64435 is shown to contain three lithologies. The results suggest that the structures of the 64435 composite clast were produced in an early deformation that consisted of extensive granulation followed by pervasive recrystallization, and that some granulitic breccias are nearly monomict. The REE concentrations in the coarse-grained troctolitic anorthosite are explained in terms of mass balance among the equilibrated phases.
Ferroan anorthosite from lunar breccia 64435 - Implications for the origin and history of lunar ferroan anorthosites
Lunar and Planetary Science Conference ; 1988 ; Houston, TX, United States
1989-01-01
Conference paper
No indication
English