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


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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:15:08
Latitude (centered):23.831° 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
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
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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