PIA23585: Yardangs in Arabia Terra
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Reconnaissance Orbiter (MRO)
 Spacecraft:  Mars Reconnaissance Orbiter (MRO)
 Instrument:  HiRISE
 Product Size:  840 x 333 pixels (w x h)
 Produced By:  University of Arizona/HiRISE-LPL
Other products from ESP_061610_1895
 Full-Res TIFF:  PIA23585.tif (753.5 kB)
 Full-Res JPEG:  PIA23585.jpg (46.14 kB)

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This image of a crater floor in Arabia Terra tells the tale of a long and varied geological history. The layered bedrock in the south of the image records events that occurred eons ago, probably soon after the crater formed.

The tear drop shaped features in the middle of the image resulted from a later episode of erosion by the wind. Persistent winds that alternated seasonally and diurnally from the southwest and from the northeast produced these “yardangs” with aerodynamic shapes that resemble inverted boat hulls. The dark pits to the north of the image were likely formed by recent impacts. The bowl shaped craters, small quantities of modern wind-blown sedimentary infill, and bright ejecta deposits all suggest that these impacts occurred quite recently, possibly at the same time.

The map is projected here at a scale of 50 centimeters (19.7 inches) per pixel. (The original image scale is 58.3 centimeters [23.0 inches] per pixel [with 2 x 2 binning]; objects on the order of 175 centimeters [68.9 inches] across are resolved.) North is up.

This is a stereo pair with ESP_061887_1895.

The University of Arizona, in Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., in 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.

Image Credit:
NASA/JPL-Caltech/University of Arizona

Image Addition Date: