The lunar surface was mapped with respect to Mg, Al, and Si, as Al/Si and Mg/Si ratios along the projected ground tracks swept out by the orbiting Apollo 16 spacecraft. The results confirm the observations made during the Apollo 15 flight and provide data for a number of features not covered before. The data are consistent with the idea that the moon has a widespread differentiated crust (the highlands). The Al/Si and Mg/Si chemical ratios correspond to that for anorthositic gabbro through gabbroic anorthosites or feldspathic basalts. The X-ray results suggest the occurrence of this premare crust or material similar to it as the Descartes landing site.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Apollo 16 geochemical X-ray fluorescence experiment: Preliminary report


    Contributors:
    Adler, I. (author) / Trombka, J. (author) / Gerard, J. (author) / Lowman, P. (author) / Schmadebeck, R. (author) / Blodgett, H. (author) / Eller, E. (author) / Yin, L. (author) / Lamothe, R. (author) / Osswald, G. (author)

    Publication date :

    1972-06-01


    Type of media :

    Preprint


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Apollo 15 geochemical X-ray fluorescence experiment - Preliminary report.

    Adler, I. / Trombka, J. / Gerard, J. et al. | NTRS | 1972


    APOLLO 16 Geochemical X-Ray Fluorescence Experiment Preliminary Report

    I. Adler / J. Trombka / J. Gerard et al. | NTIS | 1972


    Apollo 16 geochemical X-ray fluorescence experiment - Preliminary report.

    Adler, I. / Trombka, J. / Gerard, J. et al. | NTRS | 1972


    APOLLO 16 Geochemical X-Ray Fluorescene Experiment Preliminary Report

    I. Adler / J. Trombka / J. Gerard et al. | NTIS | 1972


    Apollo 16 geochemical X-ray fluorescene experiment: Preliminary report

    Adler, I. / Trombka, J. / Gerard, J. et al. | NTRS | 1972