Gorgonum Chaos Mesas
NASA/JPL/University of Arizona

Gorgonum Chaos Mesas
PSP_004071_1425  Science Theme: Fluvial Processes
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This observation shows mesas that are part of Gorgonum Chaos, a region of chaotic terrain, which is a jumble of mounds and mesas grouped together. Chaotic terrain is most commonly found in Mars near the sources of the gigantic outflow channels. Gorgonum Chaos is one of the few exceptions.

Some of the troughs between the mesas appear to have V-shaped bottoms; there is no obvious flat floor in between. Others have dunes running down their centers probably indicating flat floors. It is possible that the mesas were once connected and that something caused fractures in the original mesa's surface that were then preferentially eroded.

The subimage is of the far left side of the second trough from the bottom. The top left and bottom right are bordering mesa tops. Prominently displayed on the south (bottom) facing trough wall is a group of gullies that have a set of dark materials running across them. The materials are probably dunes, and they are on top of the gully channels indicating that they formed more recently.
Written by: Kelly Kolb   (17 November 2010)

This is a stereo pair with ESP_012246_1425.



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Acquisition date:09 June 2007 Local Mars time: 3:14 PM
Latitude (centered):-36.951° Longitude (East):189.747°
Range to target site:254.3 km (158.9 miles)Original image scale range:25.4 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:0.3° Phase angle:43.3°
Solar incidence angle:43°, with the Sun about 47° above the horizon Solar longitude:254.3°, Northern Autumn
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North azimuth:97° Sub-solar azimuth:8.0°
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North azimuth:270°Sub solar azimuth:182.8°

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All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona
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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.