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Crosscutting relations and relative ages of ridges and faults in the Tharsis region of MarsThe results of a detailed photogeologic analysis and classification of ridge-fault cross-cutting relationships on ridged plains units of the Tharsis region is reported. The problems involved in using the morphology of ridge-fault intersections to determine relative timing of structural events are discussed. The implications of using intersection angles as well as morphology to determine possible age relationships for the tectonic history of the region are presented. It is concluded that the major ridge-forming events in the Tharsis region were roughly coincident with, and possibly prior to, the extensional events that produced the faulting of the Tempe and Mareotis regions, the Coprates and Memnonia regions, and the rifting of the Valles Marineris. The compressional events that formed most of the ridges are restricted in time both by their relationship to regional extensional events and by the age of the units on which they formed.
Document ID
19840031897
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Watters, T. R.
(National Air and Space Museum Washington, DC, United States)
Maxwell, T. A.
(National Air and Space Museum Washington, DC, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1983
Publication Information
Publication: Icarus
Volume: 56
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
84A14684
Funding Number(s)
CONTRACT_GRANT: NAGW-129
Distribution Limits
Public
Copyright
Other

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