Physics
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985lpsc...16..103s&link_type=abstract
(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 16th, Houston,
Physics
3
Agglutination, Feldspars, Lunar Soil, Melting, Potassium, Sodium, Glass, Grain Size, Lunar Composition, Lunar Evolution, Shock Tests, Moon, Experiments, Agglutinates, Melting, Shock Effects, Mixing, Sodium, Potassium, Feldspar, Samples, Lunar, Fusion, Analogs, Models, Chemistry, Pressure, Composition, Volatiles, Soil, Fractionation, Laboratory Studies
Scientific paper
The results of an experiment designed to test the validity of the model for agglutinate formation involving fusion of the finest fraction or F3 are reported. Impact glasses were formed from various mixes of orthoclase and albite powders, which were used as analogs for soils with chemically constrasting coarse and fine fractions. The results showed that the single most important factor displacing the composition of a small-scale impact melt from the bulk composition of the source regolith is the fractionated composition of the finest soil fraction. Volatile loss and the amount of melting, which in turn are determined by the degree of shock, are also important. As predicted by the model, the lower pressure melts are the most fractionated, and higher pressure is accompanied by increased melting causing glass compositions to approach the bulk. In general, the systematics predicted by the model are observed; the model appears to be valid.
Hörz Fred
Papike James J.
See Thomas H.
Simon Steven B.
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