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Some implications of large impact craters and basins on Venus for terrestrial ringed craters and planetary evolutionApproximately 950 impact craters have been identified on the surface of Venus, mainly in Magellan radar images. From a combination of Earth-based Arecibo, Venera 15/1, and Magellan radar images, we have interpreted 72 as unequivocal peak-ring craters and four as multiringed basins. The morphological and structural preservation of these craters is high owing to the low level of geologic activity on the venusian surface (which is in some ways similar to the terrestrial benthic environment). Thus these craters should prove crucial to understanding the mechanics of ringed crater formation. They are also the most direct analogs for craters formed on the Earth in Phanerozoic time, such as Chicxulub. We summarize our findings to date concerning these structures.
Document ID
19940023803
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mckinnon, W. B. (Washington Univ. Saint Louis, MO, United States)
Alexopoulos, J. S. (Washington Univ. Saint Louis, MO, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1994
Publication Information
Publication: Houston Univ., New Developments Regarding the KT Event and Other Catastrophes in Earth History
Subject Category
Lunar And Planetary Exploration
Accession Number
94N28306
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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