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Lunar crater origin in the maria from analysis of Orbiter photographs.Attempt to diagnose the origin of craters that are predominantly between 100 and 2000 m diam by the use of a statistical method that is capable of measuring both the chaining and clustering of craters. It is argued that craters with aligned centers that trend in parallel directions over vast distances are exclusively of internal origin. Strong evidence that a high proportion of the chains are of tectonic origin is found. Other criteria, such as a systematic change in the number density of craters over a test area or an excess of craters on a recent lava flow, are also used to argue for endogenic craters. Using all the data together, it is found that at least 33%, but not more than 51%, of the craters sampled are of endogenic origin. It is shown that the flux of meteoroids has not necessarily varied for the past few billion years.
Document ID
19720035944
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fielder, G.
Fryer, R. J.
Titulaer, C.
Herring, A. K.
Wise, B.
(Arizona, University Tucson, Ariz., United States)
Date Acquired
August 6, 2013
Publication Date
January 27, 1972
Publication Information
Publication: Philosophical Transactions
Subject Category
Space Sciences
Accession Number
72A19610
Funding Number(s)
CONTRACT_GRANT: NERC-GR/3/271
CONTRACT_GRANT: JPL-952166
Distribution Limits
Public
Copyright
Other

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