HiRISE | Layering along West Ganges Chasma (PSP_005939

NASA/JPL-Caltech/UArizona

Layering along West Ganges Chasma
PSP_005939_1720 Science Theme: Sedimentary/Layering Processes

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This observation shows a sequence of layered sedimentary rocks exposed along the wall of Ganges Chasma.

Ganges Chasma is in the northeast part of the Valles Marineris system and cuts through surrounding plains interpreted to have been resurfaced by flowing lava. The Chasma is believed to have formed due to the collapse of plateau rocks along fault systems.

The plateau above the chasma is at the left side of the image and the wall of the trough descends to the east.

The layered sequence consists of many beds that are generally horizontal and laterally continuous. Some more pronounced layers appear to be weathering to form large-scale boulders (see cutout). Many thinner layers are apparent near the top of the wall. Material has also formed spurs and ridges along the wall of the trough.

Written by: Maria Banks (14 November 2007)

This is a stereo pair with ESP_011292_1720.

Acquisition date
02 November 2007

Local Mars time
14:16

Latitude (centered)
-8.093°

Longitude (East)
307.498°

Spacecraft altitude
261.8 km (162.7 miles)

Original image scale range
26.3 cm/pixel (with 1 x 1 binning) so objects ~79 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
2.3°

Phase angle
31.5°

Solar incidence angle
34°, with the Sun about 56° above the horizon

Solar longitude
340.7°, Northern Winter

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 2.9°

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ADDITIONAL INFORMATION
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Black & white is 5 km across; enhanced color about 1 km
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USAGE POLICY
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:
NASA/JPL-Caltech/UArizona

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.