Published March 2008
| public
Journal Article
HiRISE imaging of impact megabreccia and sub-meter aqueous strata in Holden Crater, Mars
Abstract
High Resolution Imaging Science Experiment (HiRISE) images of Holden crater, Mars, resolve impact megabreccia unconformably overlain by sediments deposited during two Noachian-age phases of aqueous activity. A lighter-toned lower unit exhibiting phyllosilicates was deposited in a long-lived, quiescent distal alluvial or lacustrine setting. An overlying darker-toned and often blocky upper unit drapes the sequence and was emplaced during later high-magnitude flooding as an impounded Uzboi Vallis lake overtopped the crater rim. The stratigraphy provides the first geologic context for phyllosilicate deposition during persistent wet and perhaps habitable conditions on early Mars.
Additional Information
© 2008 Geological Society of America. Manuscript received 6 August 2007. Revised manuscript received 18 October 2007. Manuscript accepted 28 October 2007. We thank the people at the University of Arizona, Ball Aerospace, the Jet Propulsion Laboratory, and Lockheed Martin that built and operate the High Resolution Imaging Science Experiment (HiRISE) camera and the Mars Reconnaissance Orbiter Spacecraft. Reviews by Jim Rice and Dave Des Marais improved the manuscript. Work was supported by the National Aeronautics and Space Administration.Additional details
- Eprint ID
- 37021
- DOI
- 10.1130/G24340A.1
- Resolver ID
- CaltechAUTHORS:20130220-115524555
- NASA
- Created
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2013-02-20Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences