A Compositional Study of the Aristarchus Region of the Moon Using NearInfrared Reflectance Spectroscopy
نویسنده
چکیده
Newly obtained near-infrared reflectance spectra for features on or near the Aristarchus Plateau demonstrate he diversity of compositions in the region. t!ighland units are of three probable compositions: a feldspar and elinopyroxene assemblage; a probable clinopyroxene, olivine, and possibly feldspar assemblage; and an assemblage composed of olivine or olivine and feldspar. The feldspar-elinopyroxene assemblage is tentatively correlated with the major Th anomaly centered on Aristarehus crater. The regional pyroelastic deposits on the plateau are composed of greater than 90% Fe2*-bearing glass. The Aristarebus cratering event fully penetrated any mare or pyroclasties in the target. Evidence for mare-related material is found in the ejecta on the mare side of the mare-plateau contact.
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