Computer Science
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990metic..25..149b&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 25, Sept. 1990, p. 149-159.
Computer Science
13
Meteorite Craters, Meteoritic Composition, Silica Glass, Tektites, Aluminum Silicates, Chemical Composition, Meteoritic Microstructures, North America
Scientific paper
Fifty-odd years of tektite research are reviewed, proceeding from the discovery of the first North American tektites in 1936. This included the early recognition that tektites were terrestrial objects rather than meteorites and that the glassy particles in tektites were fused quartz (lechatelierite). Later, during National Science Foundation-supported research, it was found that some tektites appeared to have formed as puddles of melt, that the content and character of bubbles in lechatelierite can be used as a relative temperature scale, that rayed bubbles in tektites formed from hydrous minerals, that bubbles in tektites formed chiefly from water which was absorbed into the walls of the bubbles leaving vacuums, and that 'fingers' in the surficial part of some tektites may have formed by differential volatilization. Some unpublished observations and adventures are briefly reported.
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