HiRISE | Clays along the Coprates Chasma Plateau (ESP_038918

NASA/JPL-Caltech/UArizona

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 (narration: Tre Gibbs) (3 December 2014)

Acquisition date
14 November 2014

Local Mars time
15:35

Latitude (centered)
-14.821°

Longitude (East)
301.886°

Spacecraft altitude
254.8 km (158.3 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

Map projection
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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non-map           (489MB)

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non-map           (423MB)

Merged IRB
map projected (213MB)

Merged RGB
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RGB color
non map           (409MB)

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IRB: infrared-red-blue
RGB: red-green-blue
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Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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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:
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.