Edge along Gale Crater Interior Mound
NASA/JPL/University of Arizona
Edge along Gale Crater Interior Mound
PSP_001488_1750  Science Theme: Sedimentary/Layering Processes


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Gale Crater is one of several craters around the equator that have deposits of light-toned layered deposits. This HiRISE image covers the northern edge of the light-toned layered deposit in the center mound of Gale Crater, as well as a small portion of the crater floor.

The top of the image shows a relatively flat surface with lots of impact craters. Moving southward, there is a large canyon where dark sands have accumulated and formed ripples and dunes.

As one moves further to the south, the light-toned layered deposit rises upward in topography. Layering is visible in some locations. The surface of the light-toned deposit is very fractured, producing meter-size blocks. The fact that we don't see many loose rocks along the surface suggests that the rocks are quickly being destroyed by winds due to their fragile nature.

Resistant hills tend to be elongated from the upper left to the lower right, consistent with upslope or downslope winds eroding the rocks.

Written by: Cathy Weitz   (23 December 2009)

This is a stereo pair with PSP_001752_1750.

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Acquisition date:20 November 2006 Local Mars time:15:31
Latitude (centered):-4.833° Longitude (East):137.296°
Range to target site:267.0 km (166.8 miles)Original image scale range:26.7 cm/pixel (with 1 x 1 binning) so objects ~80 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:2.5° Phase angle:58.8°
Solar incidence angle:57°, with the Sun about 33° above the horizon Solar longitude:138.2°, Northern Summer

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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.