I-Xe studies of individual Allende chondrules

Details I-Xe studies of individual Allende chondrules I-Xe studies of individual Allende chondrules

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.2157s&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 47, Dec. 1983, p. 2157-2177.

Computer Science

9

Chondrule, Iodine Isotopes, Meteoritic Composition, Xenon Isotopes, Abundance, Chronology, Plutonium 244, Tables (Data), Uranium 238

Scientific paper

Nine Allende chondrules and a sample of oxidized Allende matrix material are subjected to iodine-xenon studies, and the model compositions derived are compared with those of the Bjurbole chondrules. Chondrule 6 yields a well-defined isochron, with an apparent age that is later than Bjurbole whole rock. Elemental abundances suggest that all the chondrules except 6 may be pyroxene- or mesostasis-rich. The oxidized matrix sample gives a well defined isochron with an initial I-129/I-127 ratio higher than any plateaus seen in the chondrules, suggesting that the matrix predates the chondrules.

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