Exposed Faults in Coprates Chasma Wall
NASA/JPL/UArizona
Exposed Faults in Coprates Chasma Wall
PSP_005069_1670  Science Theme: Tectonic Processes
This observation shows a portion of the north rim of Coprates Chasma, a large trough that forms the eastern part of the Valles Marineris, a system of canyons stretching for thousands of kilometers.

In this image, several faults are exposed along the surface of the rim. One fault can be seen particularly well centered on the right side of this cutout.

Multiple layers are also visible on the slopes descending from the edges of the flat topped rim. The layers may have formed from volcanic, lacustrine, and/or aeolian sediments once deposited in the Valles Marineris trough. Particularly prominent is a dark-toned layer near the top of the slope. This layer is composed of materials that are more resistant to erosion than the overlying brighter layers. In HiRISE images, this layer is resolved into a rubbly outcrop of meter-scale boulders.



Written by: Maria Banks  (5 September 2007)

This is a stereo pair with PSP_005702_1670.
 
Acquisition date
26 August 2007

Local Mars time
14:22

Latitude (centered)
-12.836°

Longitude (East)
299.915°

Spacecraft altitude
257.3 km (159.9 miles)

Original image scale range
51.8 cm/pixel (with 2 x 2 binning) so objects ~155 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.5°

Phase angle
38.3°

Solar incidence angle
35°, with the Sun about 55° above the horizon

Solar longitude
302.5°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  347.5°
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POSTSCRIPT
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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.