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The lunar mare basalt suiteRecent studies have greatly expanded knowledge of lunar mare basalts. Since 1976 there has been a revision of the Apollo 12 low-Ti mare basalt suite and the discovery of a new very low-Ti (VLT: less than 1% TiO2) basalt suite at Apollo 17 and in the new Soviet samples from Mare Crisium (LUNA 24). Current studies suggest that the VLT basalts may be in some way related to the enigmatic 'green glasses' which are found in the soils from every lunar landing site. Telescopic studies of spectral reflectance and crater systematics show that basalts of varying Ti content were extruded throughout the history of mare volcanism. These new discoveries indicate that mare basalts can no longer be classified into the two simple groups of older high-Ti basalts and younger low-Ti basalts.
Document ID
19780057196
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Papike, J. J.
(State Univ. of New York Stony Brook, NY, United States)
Vaniman, D. T.
(New York, State University Stony Brook, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Publication Information
Publication: Geophysical Research Letters
Volume: 5
Subject Category
Lunar And Planetary Exploration
Accession Number
78A41105
Funding Number(s)
CONTRACT_GRANT: NSG-9044
CONTRACT_GRANT: NSR-09-051-001
Distribution Limits
Public
Copyright
Other

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