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Large impact basins and the mega-impact origin for the crustal dichotomy on MarsThe hypothesis that the crustal dichotomy on Mars is due to a single giant (mega) impact early in Martian history is tested by determining the number of 'missing' basins, the difference between the observed number of large impact basins on Mars and the number expected from a 1/D-squared distribution. If the Borealis Basin was the largest member of a 1/D-squared impact population, a large number of 'missing' basins is expected which is too large to be hidden by the younger surface units. If Chryse is the largest member of a 1/D-squared impact population, the more modest number of 'missing' basins could be confined to areas of Mars that have been resurfaced or reworked by subsequent geologic processes.
Document ID
19880043688
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Frey, Herbert
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schultz, Richard A.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1988
Publication Information
Publication: Geophysical Research Letters
Volume: 15
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
88A30915
Distribution Limits
Public
Copyright
Other

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