Gullies with Color Anomalies

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Caption:

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This observation from NASA's Mars Reconnaissance Orbiter (MRO) is an oblique view of gully deposits from the steep slope of an impact crater.

The deposits with anomalous (bluish) colors may reveal very recent activity, not yet homogenized by dust deposition, or there may be sand preferentially trapped in some places to give this appearance.

This is a stereo pair with This is a stereo pair with ESP_013667_1345 .

The map is projected here at a scale of 25 centimeters (9.8 inches) per pixel. [The original image scale is 28.5 centimeters (11.2 inches) per pixel (with 1 x 1 binning); objects on the order of 86 centimeters (33.9 inches) across are resolved.] North is up.

Background Info:

The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

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