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

TY - JOUR

T1 - Beryllium-10 in Australasian tektites

T2 - Evidence for a sedimentary precursor

AU - Pal, D. K.

AU - Tuniz, C.

AU - Moniot, R. K.

AU - Kruse, T. H.

AU - Herzog, G. F.

PY - 1982

Y1 - 1982

N2 - Each of seven Australasian tektites contains about 1 × 108 atoms of beryllium-10 (half-life, 1.53 × 106 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.

AB - Each of seven Australasian tektites contains about 1 × 108 atoms of beryllium-10 (half-life, 1.53 × 106 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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U2 - https://doi.org/10.1126/science.218.4574.787

DO - https://doi.org/10.1126/science.218.4574.787

M3 - Article

SN - 0036-8075

VL - 218

SP - 787

EP - 789

JO - Science (New York, N.Y.)

JF - Science (New York, N.Y.)

IS - 4574

ER -