Accession Number:

AD0435700

Title:

COSMIC-RAY EXPOSURE AGE OF THE FARMINGTON METEORITE FROM RADIOACTIVE ISOTOPES

Descriptive Note:

Corporate Author:

SMITHSONIAN ASTROPHYSICAL OBSERVATORY CAMBRIDGE MA

Report Date:

1963-09-09

Pagination or Media Count:

6.0

Abstract:

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.

Subject Categories:

  • Astronomy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE