Mathematics – Logic
Scientific paper
Aug 1967
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967natur.215..839w&link_type=abstract
Nature, Volume 215, Issue 5103, pp. 839-841 (1967).
Mathematics
Logic
Scientific paper
THEORIES of the origin of tektites have usually been based on the assumption that tektite glass is stable. In view of the critical nature of this assumption, the tendency of various natural tektite glasses to crystallize has been studied by subjecting them to heat treatments for specified lengths of time. Two types of experiments were performed, one involving the heat treatment of supercooled glass above the strain point, and the other, crystallization of tektite liquid on slow cooling from the melt. The tektite samples used in these experiments were lent by R. S. Clarke, jun., of the Smithsonian Institution, and E. C. T. Chao of the US Geological Survey.
Beall George H.
MacDowell J. F.
Wosinski John F.
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