Catalog Page for PIA21870

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PIA21870: Crater Rim Layers, Rubble, and Gullies

This view of the rim and upper wall of an impact crater on the Martian surface taken by NASA's Mars Reconnaissance Orbiter.

Target Name:	Mars
Is a satellite of:	Sol (our sun)
Mission:	Mars Reconnaissance Orbiter (MRO)
Spacecraft:	Mars Reconnaissance Orbiter (MRO)
Instrument:	HiRISE
Product Size:	2880 x 1800 pixels (w x h)
Produced By:	University of Arizona/HiRISE-LPL
Other Information:	Other products from ESP_015984_1335
Full-Res TIFF:	PIA21870.tif (15.56 MB)
Full-Res JPEG:	PIA21870.jpg (1.15 MB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Map Projected Browse Image
Click on the image for larger version

This observation from NASA's Mars Reconnaissance Orbiter shows a close view of the rim and upper wall of an impact crater on the Martian surface. The layers in enhanced color are exposed subsurface strata that are relatively resistant to erosion. Boulder-like rubble beyond the crater rim is scattered down the wall of the crater (down-slope is toward the lower left of the image).

Another feature of interest to Mars scientists is a large gully roughly 100 meters across. These gullies may have formed when water from melted ice on the crater walls, or from groundwater within the walls, assisted in transporting eroding material downslope.

The map is projected here at a scale of 25 centimeters (9.8 inches) per pixel. [The original image scale is 25.4 centimeters (10 inches) per pixel (with 1 x 1 binning); objects on the order of 76 centimeters (29.9 inches) across are resolved.] North is up.

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.

Image Credit:

NASA/JPL-Caltech/Univ. of Arizona

Image Addition Date:

2017-08-08