Clays along the Coprates Chasma Plateau
NASA/JPL/University of Arizona
Clays along the Coprates Chasma Plateau
ESP_038918_1650  Science Theme: Sedimentary/Layering Processes
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This image shows exposures of deposits along the plateau just to the south of Coprates Chasma.

Whereas Coprates Chasma and many of the other chasmata of Valles Marineris contain kilometer-thick light-toned mounds made up of sulfates, several of the deposits along the plateau have signatures of clays. This indicates that water was here for extensive periods of time to cause the plains to weather and alter into clays.

Written by: Cathy Weitz (audio: Tre Gibbs)  (3 December 2014)
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Acquisition date
14 November 2014

Local Mars time:
15:35

Latitude (centered)
-14.821°

Longitude (East)
301.886°

Range to target site
254.8 km (159.2 miles)

Original image scale range
25.5 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved

Map projected scale
25 cm/pixel and North is up

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Equirectangular

Emission angle:
0.1°

Phase angle:
51.3°

Solar incidence angle
51°, with the Sun about 39° above the horizon

Solar longitude
233.7°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  351.2°
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NASA/JPL/University of Arizona

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.