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Lunar mascons as consequences of giant impactsAn investigation is conducted regarding the effect of a giant impact on the thermal evolution of the moon. A model is proposed for the formation of the lunar mascons. The model takes into account the evidence of late volcanism during a period from about 3.7 to about 3.2 b.y. ago. It is found that a giant impact produces extensive fracturing in the region surrounding the basin and reduces the average thermal conductivity of the upper 20 km of this region by a factor of about 2. The less conductive ejecta blanket and the fractured zone behave as a thermal insulator. The lithosphere beneath the basin thickens monotonically and it becomes strong enough to support the mascon.
Document ID
19750028329
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Arkani-Hamed, J.
(Arya Mehr University of Technology, Teheran, Iran, United States)
Date Acquired
August 8, 2013
Publication Date
August 1, 1974
Publication Information
Publication: The Moon
Volume: 10
Subject Category
Lunar And Planetary Exploration
Accession Number
75A12401
Funding Number(s)
CONTRACT_GRANT: NSR-09-051-001
Distribution Limits
Public
Copyright
Other

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