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Distribution of inert gases in fines from the Cayley-Descartes regionThe inert gases in 14 different fines and in one sample of 2 to 4 mm fines from Apollo 16 were measured by mass spectroscopy with respect to trapped solar wind gases, cosmogenic gases, and 'parentless' Ar-40. Such studies are helpful for the understanding of regolith evolution, of transport of regolith fines, and of the lunar atmosphere. The Apollo 16 soils are unique because they represent, after Luna 20, the second and much more extensive record from the lunar highlands. The landing site presents the problem of materials from the Cayley Formation vs those from the Descartes Formation. There are two large, relatively fresh craters in the area, North Ray and South Ray, whose ejecta patterns may be recognized in the inert-gas record.
Document ID
19740040190
Document Type
Conference Proceedings
Authors
Walton, J. R.
Lakatos, S. (Rice University Houston, Tex., United States)
Heymann, D.
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
SPACE SCIENCES
Meeting Information
Lunar Science Conference(Houston, TX)
Funding Number(s)
CONTRACT_GRANT: NGL-44-006-127
Distribution Limits
Public
Copyright
Other