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Lunar mare versus terrestrial mid-ocean ridge basalts - Planetary constraints on basaltic volcanismMajor differences which exist between terrestrial midocean ridge basalts (MORBs) and lunar mare basalts reflect the different planetary characteristics of earth and moon. MORBs are enriched in aluminum and have higher Mg/(Mg + Fe(2+)). These features reflect a more aluminum- and magnesium-rich mantle source for MORBs. Mare basalts are depleted in sodium and potassium relative to MORBs and, consequently, mare feldspars are depleted in the albite component relative to MORB feldspars; these features are a reflection of the alkali-depleted nature of the moon relative to earth. The oxygen fugacities that obtained during MORB petrogenesis follow the quartz-magnetite-fayalite buffer curve very closely, while those of mare basalts are several orders of magnitude lower. This results in reduced valence states for Fe, Cr, and Ti in mare basalts, which, in turn, has a significant effect on mineral-melt partitioning.
Document ID
19780068428
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)
Bence, A. E.
(New York, State University Stony Brook, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1978
Publication Information
Publication: Geophysical Research Letters
Volume: 5
Subject Category
Lunar And Planetary Exploration
Accession Number
78A52337
Funding Number(s)
CONTRACT_GRANT: NSF OCE-76-22193-A01
CONTRACT_GRANT: NSG-9044
CONTRACT_GRANT: NGL-33-015-130
Distribution Limits
Public
Copyright
Other

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