A number of volatiles in Apollo 15 soils correlate with each other and with decreasing distance from the Apennine Front. These correlations can be understood in terms of a deposition of green glass and cogenetic volatiles on the flanks of the Front followed by addition of secondary magmatic volatiles including excess Ar-40. Mixing of these materials with mare-type regolith resulted in the observed volatile-element patterns. The absence of an increase in siderophilic element content with decreasing distance from the Front probably resulted from the failure of the steeply sloping front to develop a highlands-type mature regolith. Breccia 15015 has a siderophilic element signature typical of a mature Apollo 15 soil, which tends to rule out its transport to the site as part of an Autolycus or Aristillus ray.
Volatile-element systematics and green glass in Apollo 15 lunar soils
Lunar Science Conference ; 1974 ; Houston, TX
01.01.1974
Sonstige
Keine Angabe
Englisch
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