The 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.
Distribution of inert gases in fines from the Cayley-Descartes region
Lunar Science Conference ; 1973 ; Houston, TX
1973-01-01
Miscellaneous
No indication
English
Inert gases from Apollo 12, 14, and 15 fines.
NTRS | 1972
|Interaction potential of the inert gases. II.
NTRS | 1965
|