The crystallization age of an Apollo 15 anorthosite rock, 15415,9, returned from the lunar highlands has been measured to be 4.09 (plus or minus 0.19) b.y. The primitive lunar crust must have been formed in the first 300 to 400 m.y. The results give some credence to the hypothesis that the primitive lunar surface was molten and large-scale fractional crystallization occurred in the early history of the moon.


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    Title :

    Age of a lunar anorthosite.


    Contributors:

    Published in:

    Science ; 175


    Publication date :

    1972-01-28


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :


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