This paper reexamines the Sr isotope data available for the Apollo 14 high-alumina basalts in light of the assimilation and fractional crystallization (AFC) process model proposed by Neal et al. (1987, 1988, 1989). Positive linear correlations of Sr-87/Sr-86 with Rb-87/Rb-86 and the Sr abundance (both leading to KREEP) are used as evidence of such an AFC process in the petrogenesis of Apollo 14 high-alumina basalts. The existing Sr isotope data for Apollo 14 high-alumina basalts suggest that there were three AFC cycles.


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    Title :

    Modeling of lunar basalt petrogenesis - Sr isotope evidence from Apollo 14 high-alumina basalts


    Contributors:
    Neal, C. R. (author) / Taylor, L. A. (author)

    Conference:

    Lunar and Planetary Science Conference ; 1989 ; Houston, TX, United States


    Publication date :

    1990-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English