Computer Science
Scientific paper
Apr 1955
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1955gecoa...7..151p&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 7, Issue 3-4, pp.151-153
Computer Science
19
Scientific paper
The isotopic compositions have been determined for the leads isolated from three stone meteorites. Based upon certain assumptions, Pb 207 /Pb 206 ages of about 4.5 × 10 9 years are calculated for the meteorites. The lead data indicate that the concentrations of uranium should be about 0.1 p.p.m. and the concentrations of thorium should be about 0.5 p.p.m. in stone meteorites.
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