Pb isotopic age of the Allende chondrules
Description
We have studied Pb-isotope systematics of chondrules from the oxidized CV3 carbonaceous chondrite Allende. The chondrules contain variably radiogenic Pb with a 206Pb/204Pb ratio between 19.5-268. Pb-Pb isochron regression for eight most radiogenic analyses yielded the date of 4566.2 ± 2.5 Ma. Internal residue-leachate isochrons for eight chondrule fractions yielded consistent dates with a weighted average of 4566.6 ± 1.0 Ma, our best estimate for an average age of Allende chondrule formation....[Show more]
Collections | ANU Research Publications |
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Date published: | 2007 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/37212 |
Source: | Meteoritics and Planetary Science |
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File | Description | Size | Format | Image |
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01_Amelin_Pb_isotopic_age_of_the_Allende_2007.pdf | 590.43 kB | Adobe PDF | Request a copy |
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