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Regional stratigraphy and geologic history of Mare CrisiumRemote sensing and Luna 24 sample data are used to develop a summary of the regional stratigraphy and geologic history of Mare Crisium. Laboratory spectra of Luna 24 samples, telescopic reflectance spectra in the 0.3 to 1.1 micron range and orbital X-ray data have identified three major basalt groups in the region. Group I soil is derived from iron- and magnesium-rich titaniferous basalts and was apparently emplaced over the majority of the basin, however is presently exposed as a shelf in the southwest part. Group II soils, derived from very low titanium ferrobasalts, were emplaced in two stages subsequent to Group I emplacement and now appear as part of the outer shelf and topographic annulus. Subsidence of the basin interior preceded and continued after the emplacement of the third basalt group, a soil derived from a low titanium ferrobasalt. The Luna 24 site is found to be within a patch of Group II material.
Document ID
19790048492
Document Type
Conference Proceedings
Authors
Head, J. W., III (Brown University Providence, R.I., United States)
Adams, J. B. (Washington, University Seattle, Wash., United States)
Mccord, T. B. (Hawaii, University Honolulu, Hawaii, United States)
Pieters, C. (NASA Johnson Space Center Houston, Tex., United States)
Zisk, S. (Haystack Observatory Westford, Mass., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
LUNAR AND PLANETARY EXPLORATION
Meeting Information
Mare Crisium: The view from Luna 24; Conference(Houston, TX)
Funding Number(s)
CONTRACT_GRANT: NSG-7173
CONTRACT_GRANT: NSG-7197
CONTRACT_GRANT: NGR-40-002-116
CONTRACT_GRANT: NSG-7048
CONTRACT_GRANT: NSG-7312
CONTRACT_GRANT: NGL-22-009-790
Distribution Limits
Public
Copyright
Other