Spectral Variations Among Crystalline and Glassy Apollo 17 Impact Melt Rocks

Computer Science

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Apollo 17, Craters, Impact Melt, Samples: Lunar, Spectroscopy

Scientific paper

Remote geochemical mapping of lunar impact melt associated with complex craters is a key to better understanding of impact melt formation and the impact cratering process. Ground-based NIR spectra and Clementine multispectral images comprise a dataset with high-resolution spectral and spatial information, respectively. To interpret these data with respect to impact melt, two suites of lunar samples are being measured in NASA's Reflectance Experiment Laboratory (RELAB) at Brown University. The samples include seven Apollo 17 crystalline impact melts as well as synthesized glass equivalents, and 11 naturally occurring impact glasses from several landing sites. Acquisition and analysis of the laboratory spectra is the first step towards quantitatively modeling remote spectra to learn more about the composition and source of the melt found at complex craters. Furthermore, from the laboratory spectra, basic compositional parameters may be determined for application to Clementine data. Initial measurements of the Apollo 17 melt rocks have been completed and are presented below.

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