Heat flow in impact melts: Apollo 17 Station 6 Boulder and some applications to other breccias and xenolith laden melts

Abstract

Results of calculations for the cooling of an impact melt sheet are reported for the sheet sampled by the Apollo 17 Station 6 Boulder. The calculations were based on a two-stage cooling model involving a short initial phase of thermal equilibration between small clasts and the surrounding melt, and a second phase of heat loss from the melt sheet to the surroundings.