Published June 10, 1973
| Published
Journal Article
Open
Removal of a Constraint on the Composition of the Lunar Interior
- Creators
- Anderson, Don L.
Abstract
Ringwood and Essene (1970) proposed that the CaO and Al_2O_3 contents of the deep interior of the moon must be less than 6% each. This constraint has been generally accepted and has led to models of the lunar interior that are dominated by ferromagnesium silicates. This constraint is invalid. High CaO and Al_2O_3 peridotites have broader intermediate-density (3.3–3.4 g/cm^3) fields than the Ringwood-Essene 'lunar pyroxenite', and the high-density phase occurs at higher pressure. Likewise, the gabbro-eclogite transformation pressure increases with Al_2O_3 content. The moon can have a thick plagioclase rich outer shell and a high Ca-Al interior.
Additional Information
© 1973 by the American Geophysical Union. Manuscript Received: 3 Aug 1972. Revised December 19, 1972. Contribution 2195, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91109. I would like to acknowledge the helpful suggestions of P. Gast, A. E. Ringwood, G. Kennedy, and I. MacGregor. This research was supported by the National Aeronautics and Space Administration under contract NASA NGL 05-005-0069.Attached Files
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Additional details
- Eprint ID
- 55032
- Resolver ID
- CaltechAUTHORS:20150219-151144298
- NGL 05-005-0069
- NASA
- Created
-
2015-02-19Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 2195