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Degradation of Endeavour Crater, MarsThe Opportunity rover has traversed portions of two western rim segments of Endeavour, a 22 km-diameter crater in Meridiani Planum, for the past three years. The resultant data enables the evaluation of the geologic expression and degradation state of the crater. Endeavour is Noa-chian-aged, complex in morphology, and originally may have appeared broadly similar to the more pristine 20.5 km-diameter Santa Fe complex crater in Lunae Palus (19.5degN, 312.0degE). By contrast, Endeavour is considerably subdued and largely buried by younger sulfate-rich plains. Exposed rim segments dubbed Cape York (CY) and Solander Point/Murray Ridge/Pillinger Point (MR) located approximately1500 m to the south reveal breccias interpreted as remnants of the ejecta deposit, dubbed the Shoemaker Formation. At CY, the Shoemaker Formation overlies the pre-impact rocks, dubbed the Matijevic Formation.
Document ID
20150002910
Acquisition Source
Johnson Space Center
Document Type
Abstract
Authors
Grant, J. A. (Smithsonian Institution Washington, DC, United States)
Crumpler, L. S. (New Mexico Museum of Natural History and Science Albuquerque, NM, United States)
Parker, T. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Golombek, M. P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wilson, S. A. (Smithsonian Institution Washington, DC, United States)
Mittlefehldt, D. W. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
March 13, 2015
Publication Date
March 16, 2015
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-CN-32735
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 16, 2015
End Date: March 20, 2015
Sponsors: Universities Space Research Association, Lunar and Planetary Inst.
Distribution Limits
Public
Copyright
Public Use Permitted.

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