Layers Exposed on Slope in Echus Chasma Region
NASA/JPL-Caltech/UArizona
Layers Exposed on Slope in Echus Chasma Region
PSP_002472_1810  Science Theme: Sedimentary/Layering Processes
The layers visible in this subimage of Echus Chasma are very different from the light-toned, thinly bedded layers HiRISE has observed in deposits seen elsewhere in Valles Marineris.

The view of these layers in Echus Chasma shows they are rough, with knobs of rock sticking out through the dust and talus (loose debris) on the slope. This indicates that perhaps these layers are made of different materials than the light-toned deposits, which appear more friable in nature.

These rough layers may be exposures of lavas, or they might just be more resistant forms of sedimentary rocks. The layers are typical of those seen in chasma slopes and crater rims elsewhere on the Martian surface.



Written by: Ross A. Beyer  (14 February 2007)
 
Acquisition date
05 February 2007

Local Mars time
15:39

Latitude (centered)
1.124°

Longitude (East)
278.602°

Spacecraft altitude
266.2 km (165.4 miles)

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26.9 cm/pixel (with 1 x 1 binning) so objects ~81 cm across are resolved

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25 cm/pixel and North is up

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7.6°

Phase angle
62.4°

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55°, with the Sun about 35° above the horizon

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178.5°, Northern Summer

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Sub-solar azimuth:  5.4°
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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.