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U-Pb ages of angrites

Amelin, Yuri


Precise U-Pb ages, determined with double spike (202Pb-205Pb) thermal ionization m1ass spectrometry, are reported for angrites Angra dos Reis (AdoR), Lewis Cliff 86010 (LEW), and D'Orbigny. Nineteen of 23 acid-washed pyroxene fractions from these meteorites and whole rock fractions from D'Orbigny contain between 0.5 and 1.3 pg of total common Pb, indistinguishable from analytical blank. Measured206Pb/204Pb ratios in these fractions are between 6300 and 14,100 for AdoR, 1160-4500 for LEW, and...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2007.09.034


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