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Published December 1972 | public
Journal Article

Rb-Sr systematics of Luna 20 and Apollo 16 samples

Abstract

Lunar soils from all missions indicate that an early lunar differentiation process occurred in the interval 4.3–4.6 AE and resulted in the formation of a crust rich in K, Rb, U and Th. An attempt has been made to identify rocks which were formed during this early differentiation event.

Additional Information

We thank S. Epstein and H. Taylor for generously allowing the transfer of part of their 65015 allocation for joint experiments. We thank J. Brown and T. Wen for their careful and timely assistance. This work was supported by NASA under NAS 9-8074.

Additional details

Created:
August 22, 2023
Modified:
October 24, 2023