Publication Date:
2019-07-13
Description:
The paper reports a comparative study of solar-flare tracks and other microscopic features in unmetamorphosed lunar breccias, carbonaceous chondrites, and noncarbonaceous gas-rich meteoritic breccias. The data suggest that these objects originated from material once on and just below the surface of solar-system regoliths. Characteristics of these regoliths are discussed with reference to the track-rich olivines in Orgueil and the impregnated Apollo 16 deep drill core. The use of a variant of the fission-track method to determine the time of compaction of soil grains into a breccia is explained.
Keywords:
LUNAR AND PLANETARY EXPLORATION
Type:
Lunar Science Conference; Mar 17, 1975 - Mar 21, 1975; Houston, TX
Format:
text
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