A Dark-Toned, Pitted Mound in a Crater in Northeast Arabia Terra
NASA/JPL/University of Arizona

A Dark-Toned, Pitted Mound in a Crater in Northeast Arabia Terra
ESP_034970_2040  Science Theme: Landscape Evolution
Russian


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This fascinating observation shows us a dark-toned mound with pits inside an impact crater. Are these pits the result of sublimation?

The crater itself is an ancient one, as evidenced by the eroded rim. For the mound inside, HiRISE resolution can give us a closer look at textural features that might help explain what we're looking at: layers in pit walls, or perhaps cracks from expansion?

Written by: HiRISE Science Team (audio: Tre Gibbs)   (26 March 2014)

This is a stereo pair with ESP_034324_2040.



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Acquisition date:11 January 2014 Local Mars time: 3:08 PM
Latitude (centered):23.830° Longitude (East):68.121°
Range to target site:281.3 km (175.8 miles)Original image scale range:28.1 cm/pixel (with 1 x 1 binning) so objects ~84 cm across are resolved
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Emission angle:2.1° Phase angle:40.7°
Solar incidence angle:43°, with the Sun about 47° above the horizon Solar longitude:74.8°, Northern Spring
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North azimuth:97° Sub-solar azimuth:16.7°
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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.