Spectral reflectance studies of the Orientale basin

Details Spectral reflectance studies of the Orientale basin Spectral reflectance studies of the Orientale basin

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..402h&link_type=abstract

In NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984 p 402-403 (SEE N85-23474 13-91)

Physics

Lunar Composition, Lunar Surface, Spectral Reflectance, Structural Basins, Highlands, Infrared Spectra, Lunar Rocks, Pyroxenes

Scientific paper

Twelve near-infrared spectra were obtained at the Mauna Kea Observatory 2.2-m telescopy using the Planetary Geosciences Division indium antimonide spectrometer. These include spectra obtained for two fresh surfaces on the inner Rook ring, two fresh craters in the outer Rook Mts., and two inner Rook ring, two fresh craters in the outer Rook Mts., and two fresh 11-km. craters (Eichstadt G and H) which are located between the outer Rook ring and the Cordillera ring and exposed material from within the knobby facies of the Montes Rook Formation. In addition, spectra were collected for portions of the Maunder Formation. Special attention was paid to the spectra collected for six immature features within the Cordillers ring. Analyses of the 1-micron band positions and shapes as well as continuum slopes indicate that the spectra for craters in the knobby facies and in the outer Rook Mts., while differing in detail, exhibit many common spectral characteristics. These spectra represent relatively fresh highlands rocks dominated by abundant Fe-bearing plagioclase feldspar and Ca-poor orthopyroxene. Compositions ranging between noritic anorthosite and anorthositic norite are indicated.

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