Hydrated Sulfates in Melas Chasma
NASA/JPL-Caltech/UArizona
Hydrated Sulfates in Melas Chasma
ESP_082700_1670  Science Theme: Composition and Photometry
This image was acquired to get more information about a site where the CRISM instrument detected hydrated sulfates. The bright materials are likely to be sediments rich in the hydrated sulfates, and this image shows that most of the material is covered by a thin deposit of dark material, perhaps sand.

We also see streamlined patterns that suggest fluvial processes were involved in depositing or eroding the sulfate-rich sediments.

Written by: Alfred McEwen (narration: Tre Gibbs)  (22 April 2024)

This is a stereo pair with ESP_082990_1670.
 
Acquisition date
18 March 2024

Local Mars time
15:46

Latitude (centered)
-12.725°

Longitude (East)
290.709°

Spacecraft altitude
265.1 km (164.7 miles)

Original image scale range
53.2 cm/pixel (with 2 x 2 binning) so objects ~160 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.5°

Phase angle
58.3°

Solar incidence angle
55°, with the Sun about 35° above the horizon

Solar longitude
219.0°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  355.9°
JPEG
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JP2
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IRB color
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JP2 EXTRAS
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map-projected  (98MB)
non-map           (155MB)

IRB color
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non-map           (64MB)

Merged IRB
map projected  (185MB)

Merged RGB
map-projected  (177MB)

RGB color
non map           (60MB)
ANAGLYPHS
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Full resolution JP2 download
Anaglyph details page

BONUS
4K (TIFF)
8K (TIFF)
10K (TIFF)

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-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.