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The relationship between orbital, earth-based, and sample data for lunar landing sitesResults are reported of a detailed examination of data available for the Apollo lunar landing sites, including the Apollo orbital measurements of six major elements derived from XRF and gamma-ray instruments and geochemical parameters derived from earth-based spectral reflectivity data. Wherever orbital coverage for Apollo landing sites exist, the remote data were correlated with geochemical data derived from the soil sample averages for major geological units and the major rock components associated with these units. Discrepancies were observed between the remote and the soil-anlysis elemental concentration data, which were apparently due to the differences in the extent of exposure of geological units, and, hence, major rock eomponents, in the area sampled. Differences were observed in signal depths between various orbital experiments, which may provide a mechanism for explaining differences between the XRF and other landing-site data.
Document ID
19900046413
Document Type
Conference Paper
Authors
Clark, P. E. (JPL Pasadena, CA, United States)
Hawke, B. R. (Hawaii, University Honolulu, United States)
Basu, A. (Indiana University Bloomington, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
LUNAR AND PLANETARY EXPLORATION
Meeting Information
Lunar and Planetary Science Conference(Houston, TX)
Funding Number(s)
CONTRACT_GRANT: NSG-7323
CONTRACT_GRANT: NSG-9077
CONTRACT_GRANT: NAGW-237
Distribution Limits
Public
Copyright
Other