Beryllium-10 in Australasian tektites - Evidence for a sedimentary precursor

Details Beryllium-10 in Australasian tektites - Evidence for a sedimentary precursor Beryllium-10 in Australasian tektites - Evidence for a sedimentary precursor

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sci...218..787p&link_type=abstract

Science, vol. 218, Nov. 19, 1982, p. 787-789. Research supported by Rutgers University and NSF;

Computer Science

21

Australites, Beryllium 10, Earth Surface, Geochemistry, Meteoritic Composition, Tektites, Meteorite Craters, Moldavite, Sedimentary Rocks

Scientific paper

Each of seven Australasian tektites contains about 100 micron atoms of beryllium-10 (half-life, 1.53 million years) per gram. Cosmic-ray bombardment of the australites cannot have produced the measured amounts of beryllium-10 either at the earth's surface or in space. The beryllium-10 contents of these australites are consistent with a sedimentary precursor that adsorbed from precipitation beryllium-10 produced in the atmosphere. The sediments must have spent several thousand years at the earth's surface within a few million years of the tektite-producing event.

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