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Ages of fracturing and resurfacing in the Amenthes region, MarsAn attempt is made to determine whether there is any tectonic evidence in the relatively recent history of the boundary zone that will place contraints on the origin of the Martian dichotomy. It is found that the timing of resurfacing events and structural modification of outlier plateaus and mesas in the Martian eastern hemisphere provides a contraint on the history of tectonic events along the cratered terrain-northern plains boundary. The circumferential grabens surrounding the Isidis basin ceased forming before the final emplacement of ridged plains on the adjacent northern lowlands. The cratered plateau east of the Isidis basin includes two crater populations; stripping of the rims of craters was complete before downfalling of the transition zone between the cratered terrain and the northern plains, and a young population of craters on the plateau records the same age as the ridged plains units north of the boundary.
Document ID
19890023538
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maxwell, Ted A.
(National Air and Space Museum Washington, DC, United States)
Mcgill, George E.
(Massachusetts, University Amherst, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Country: United States
Start Date: March 16, 1987
End Date: March 20, 1987
Accession Number
89A10909
Funding Number(s)
CONTRACT_GRANT: NGR-22-010-076
CONTRACT_GRANT: NAGW-129
Distribution Limits
Public
Copyright
Other

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