Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sciam.239..116o&link_type=abstract
Scientific American, vol. 239, Aug. 1978, p. 116-125.
Other
1
Review, Origin, Apollo 14, Glasses, Popular, Samples, Lunar, Irghizites, Moldavites, Tektites
Scientific paper
Small glassy pebbles, called tektites, are found in widely scattered locations around the world. These tektites appear much like volcanic glass obsidian, but their chemical composition is different from that of any terrestrial lava and they contain far less water and none of obsidian's characteristic microcrystals. No one has ever found the mother lode of a field of tektites. They cannot, therefore, be the product of terrestrial volcanism. Recently acquired knowledge about the moon's surface confirms earlier indications that tektites cannot be bits of lunar soil propelled to the earth by the impact of meteorites on the moon. According to one of two remaining possibilities tektites are bits of terrestrial sedimentary rock excavated by meteorites striking the earth's surface, melted by the heat of impact, and congealed into glass as they travel above the atmosphere to the scattered sites where they are found. The other possibility is that tektites are the remains of gobs of lava fired at the earth by volcanic activity on the moon.
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