Particle track measurements in lunar regolith breccias

Details Particle track measurements in lunar regolith breccias Particle track measurements in lunar regolith breccias

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984em%26p...31..221b&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 31, Dec. 1984, p. 221-227.

Computer Science

3

Breccia, Lunar Rocks, Particle Tracks, Regolith, Selenology, Tables (Data)

Scientific paper

Particle track measurements have been reported for 25 (5 percent) of the regolith breccias in the collection; they have been reported for 16 breccias (30 percent) in the reference suite. The most frequently reported measurement for these 25 breccias is the maximum surface exposure age of the compacted rock (48 percent of the published breccia measurements). Information on the nature of the precompaction regolith is given for 9 rocks (36 percent) and on the nature of the compaction event for 6 rocks (24 percent). Most of the breccias appear to have simple post-compaction surface exposure histories (89 percent). From the few track density frequency distributions (7) that are available and inferring from the low exposure ages of these rocks (75 percent were younger than 10 to the 6th years), it appears that most of these breccias are amenable to studies which separate the contemporary surface exposure age from information about the precompaction regolith. If the number of immature-submature precompaction soils (6 out of 10 of the breccias for which appropriate data are available) represents many regolith breccias, then we can infer that regolith breccias may sample the deeper, less reworked materials in the lunar soil and compliment the samples available from the returned cores.

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