Evolution of the lunar highland crustThe evolution of three distinct element associations in the lunar highland crust is discussed in terms of the Taylor-Jakes model which involves melting of most of the moon during accretion. Sources for (1) high Ca, Al, Sr, Eu, (2) high Mg and Cr, and (3) high K, REE, Zr, Hf, Nb are suggested. Bombardment by large projectiles during the differentiation process causes melting and mixing, which produces a wide range of compositions in the crust. The formation of dunite, troctolite, high-, medium-, and low-K Fra Mauro basalts, and rocks close to the olivine-spinel-plagioclase peritectic point is considered.
Document ID
19780062755
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Taylor, S. R. (Australian National University Canberra, Australia)
Bence, A. E. (Australian National University Canberra, Australia; New York, State University, Stony Brook, N.Y., United States)