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Multispectral studies of selected crater- and basin-filling lunar Maria from Galileo Earth-Moon encounter 1New visible and near-infrared multispectral data of the Moon were obtained by the Galileo spacecraft in December, 1990. These data were calibrated with Earth-based spectral observations of the nearside to compare compositional information to previously uncharacterized mare basalts filling craters and basins on the western near side and eastern far side. A Galileo-based spectral classification scheme, modified from the Earth-based scheme developed by Pieters, designates the different spectral classifications of mare basalt observed using the 0.41/0.56 micron reflectance ratio (titanium content), 0.56 micron reflectance values (albedo), and 0.76/0.99 micron reflectance ratio (absorption due to Fe(2+) in mafic minerals and glass). In addition, age determinations from crater counts and results of a linear spectral mixing model were used to assess the volcanic histories of specific regions of interest. These interpreted histories were related to models of mare basalt petrogenesis in an attempt to better understand the evolution of lunar volcanism.
Document ID
Document Type
Conference Paper
Williams, D. A.
(Arizona State Univ. Tempe, AZ, United States)
Greeley, R.
(Arizona State Univ. Tempe, AZ, United States)
Neukum, G.
(Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt Berlin, Germany)
Wagner, R.
(Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt Berlin, Germany)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z
Subject Category
Lunar And Planetary Exploration
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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