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Magnetism and the history of the moonAll lunar samples measured to date contain a weak but stable remanent magnetization of lunar origin. The magnetization is carried by metallic iron and is considered to be caused by cooling from above the Curie point in the presence of a magnetic field. Although at present the moon does not have a global field, the remanent magnetization of the rock samples and the presence of magnetic anomalies, both on the near and far side of the moon, imply that the moon experienced a magnetic field during some portion of its history. The field could have been generated in a liquid iron core sustaining a self-exciting dynamo, but there are some basic thermal and geochemical objections that need to be resolved.
Document ID
19740027399
Document Type
Conference Proceedings
Authors
Strangway, D. W. (NASA Johnson Space Center Physics Branch, Houston, Tex., United States)
Gose, W. A. (Lunar Science Institute Houston, Tex., United States)
Pearce, G. W. (Lunar Science Institute, Houston, Tex.; Toronto, University Toronto, Canada)
Carnes, J. G. (Lockheed Electronics Co., Inc. Houston, Tex., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
SPACE SCIENCES
Meeting Information
Annual Conference on Magnetism and magnetic materials 1972(Denver, CO)
Funding Number(s)
CONTRACT_GRANT: NSR-09-051-001
Distribution Limits
Public
Copyright
Other