Fans and Valleys

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Caption:

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This image acquired by NASA's Mars Reconnaissance Orbiter on April 29, 2018, shows an impact crater approximately 23 kilometers across is home to fan-shaped deposits that extend from the rim and sit on the interior crater floor.

Thick beds with varying tone are exposed along the edge of the fan . Shallow valleys that carve into the smooth upland surfaces outside of the crater may provide clues regarding the formation of the deposits. Many boulder-sized blocks sit on the interior crater floor beyond the toe (distal edge) of the deposits.

This fan-hosting crater is located near the boundary between Tempe Terra and Acidalia Planitia in the Northern Hemisphere of Mars.

The map is projected here at a scale of 50 centimeters (19.7 inches) per pixel. [The original image scale is 60.4 centimeters (23.8 inches) per pixel (with 2 x 2 binning); objects on the order of 181 centimeters (63.4 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, Colorado. 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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