Clay-Rich Terrain in Eridania Basin
NASA/JPL/University of Arizona
Clay-Rich Terrain in Eridania Basin
ESP_058610_1515  Science Theme: Composition and Photometry
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HiRISE reveals small-scale shapes that often correlate with mineral units and provides information about stratigraphy (i.e., what’s on top and relative ages). This image was acquired for co-analysis with a spectrometer instrument also on our spacecraft called CRISM (Compact Reconnaissance Imaging Spectrometer for Mars). It shows polygonal units that match clay-rich areas. Plus, this region is colorful!

This location, in Eridania Basin, was the site of an ancient lake, so these clay-rich sediments may have been habitable.

While CRISM cannot acquire new data from their infrared channel due to lack of cooling, they have acquired much previous data that lacks HiRISE coverage.

Written by: Alfred McEwen (audio: Tre Gibbs)  (1 April 2019)
 
Acquisition date
27 January 2019

Local Mars time
14:07

Latitude (centered)
-28.307°

Longitude (East)
181.607°

Spacecraft altitude
255.3 km (158.7 miles)

Original image scale range
51.2 cm/pixel (with 2 x 2 binning) so objects ~154 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
4.9°

Phase angle
30.1°

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

Solar longitude
331.2°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  28.7°
JPEG
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IRB color
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Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

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map-projected   (460MB)

IRB color
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JP2 EXTRAS
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map-projected  (254MB)
non-map           (255MB)

IRB color
map projected  (100MB)
non-map           (284MB)

Merged IRB
map projected  (498MB)

Merged RGB
map-projected  (441MB)

RGB color
non map           (243MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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/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.