Search for p-isotopic anomaly of cerium in the bulk Allende meteorite

Akio Makishima, Akimasa Masuda

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    LREE (La, Ce, Nd and Sm) concentrations, and 143Nd/144Nd and 138Ce/142Ce ratios of two powder aliquots from the bulk Allende meteorite (BAM) were measured to investigate p-isotopic anomalies of Ce. Initial Ce isotope ratios of the two aliquots were calculated assuming an age of 4.56 Ga, identical with ages of other chondrites or eucrites. From the data, we conclude that there are no recognizable p-isotopic anomalies in BAM. This suggests that the existence of p-isotopic anomalies of other REE in BAM is unlikely. Our data can not, however, rule out the possibility that this is only caused by averaging of heterogeneous distribution of p-isotopic anomalies.

    Original languageEnglish
    Pages (from-to)115-122
    Number of pages8
    JournalGEOCHEMICAL JOURNAL
    Volume28
    Issue number2
    DOIs
    Publication statusPublished - 1994

    ASJC Scopus subject areas

    • Geophysics
    • Geochemistry and Petrology

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