Lunar central peak mineralogy and iron content using the Kaguya Multiband Imager: Reassessment of the compositional structure of the lunar crust

摘要: Ryder and Wood (1977) suggested that the lunar crust becomes more mafic with depth because impact melts associated large Imbrium Serenitatis basins are than surface composition of Moon. In this study, we reexamine hypothesis depth; analyze crater central peaks by using recent remote sensing data combining best practices previous studies. We compute mineralogy for 34 (1) nine-band visible near-infrared from Kaguya Multiband Imager, (2) an improved version Hapke's radiative transfer model validated spectra soils well-known modal mineralogy, (3) new crustal thickness models Gravity Recovery Interior Laboratory to examine variation in depth. find there is no increase mineral abundances proximity crust/mantle boundary or current and, therefore, does not become anorthosite very low abundance (“purest anorthosite” PAN) a minority constituent these peaks, clear evidence distinct PAN-rich layer middle as previously proposed. The most classically defined anorthosites average noritic similar surface.