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Martian lineaments from Mariner 6 and 7 photographsMariner 6 and 7 photographs were used to investigate the nature and importance of linear surface trends on Mars. Cross correlations of frequency-azimuth distributions of linear trends from different Mariner frames indicate that lineations not recognized as topographic features have a component of pseudoforms, probably introduced during digital reconstruction of the pictures. Similar statistical tests may aid in the analysis of surface trends from future satellites and space probes. The most reliable data were separated into photometrically defined provinces. Meridiani Sinus and Margaritifer Sinus display five major trends in common, which are interpreted as extensions of crustal weaknesses related to the enormous equatorial canyon revealed in Mariner 6 and 9 pictures. Alignments of crater wall segments generally match these trends and suggest structural control of crater plan. Crater chains, however, do not match these trends and are interpreted as secondary impacts. Rose diagrams of lineations in Deucalionis Regio exhibit much more complexity and are believed to reflect a better preserved or more complex geologic history.
Document ID
19730015090
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Schultz, P. H. (NASA Ames Research Center Moffett Field, CA, United States)
Ingerson, F. E. (Texas Univ. Austin, United States)
Date Acquired
September 2, 2013
Publication Date
April 1, 1973
Subject Category
Space Sciences
Report/Patent Number
NASA-TM-X-62264
Accession Number
73N23817
Funding Number(s)
CONTRACT_GRANT: NGR-44-012-194
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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