NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Orbital chemistry - Lunar surface analysis from the X-ray and gamma ray remote sensing experimentsThe X-ray and gamma-ray lunar surface remote sensing experiments conducted by the Apollo 15 and 16 are discussed. The data indicate mare basins that are extensively basaltic and highlands of aluminum-rich anorthositic-type feldspar. An east-west asymmetry involving higher Al/Si ratios toward the east is noted; high concentrations of a KREEP-type component along the Imbrium-Procellarum edges and throughout the basin are also observed. Lunar K/Th ratios, lowest in areas of the Imbrium and higher in the surrounding mare and highlands, may lend support to the picture of the moon as a high-temperature condensate.
Document ID
19780042895
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Adler, I.
(Maryland, University College Park, Md., United States)
Trombka, J. I.
(NASA Goddard Space Flight Center Laboratory for Solar Physics and Astrophysics, Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Publication Information
Publication: Physics and Chemistry of the Earth
Volume: 10
Issue: 1, 19
Subject Category
Lunar And Planetary Exploration
Accession Number
78A26804
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available