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Science 8 November 1963:
Vol. 142. no. 3593, pp. 673 - 674
DOI: 10.1126/science.142.3593.673
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Articles

Cosmic-Ray Exposure Age of the Farmington Meteorite from Radioactive Isotopes

J. DeFelice 1, G. G. Fazio 1, and E. L. Fireman 1

1 Smithsonian Astrophysical Observatory, Cambridge, Massachusetts

The cosmic-ray exposure age of the Farmington meteorite was found to be greater than 7000 years from the ratio of the carbon-14 and argon-39 present and less than 25,000 years from the ratio of the aluminum-26 and argon-39 present. This exposure age is about an order of magnitude smaller than was estimated previously.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Terrestrial Ages of Four Allan Hills Meteorites: Consequences for Antarctic Ice.
E. L. Fireman, E. L. FIREMAN, L. A. RANCITELLI, and T. KIRSTEN (1979)
Science 203, 453-455
   Abstract »    PDF »
Farmington Meteorite: Cristobalite Xenoliths and Blackening.
R. A. Binns and R. A. Binns (1967)
Science 156, 1222-1226
   Abstract »    PDF »
Meteorites and the Moon: Cosmic-ray ages and contaminants provide evidence that meteorites may come from the moon.
H. C. Urey and H. C. Urey (1965)
Science 147, 1262-1265
   Abstract »    PDF »


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