HiRISE | Sulfates in Aram Chaos (PSP_008311

NASA/JPL-Caltech/UArizona

Sulfates in Aram Chaos
PSP_008311_1835 Science Theme: Composition and Photometry

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This image is from Aram Chaos, a large crater connected to the Ares Vallis outflow channel. It is called “chaos” because of the rough floor topography, large slumped blocks and large fractures that may have been caused by removal of subsurface material.

The cutout is a false-color one, and the lighter-toned area is a heavily fluted and pitted capping unit. This surface tends to trap dark sand (which appears blue in false color) in the lows. We can also see the dark blue sand forming dunes below the cliff.

Sulfates have been detected in the cliff walls in some areas within Aram Chaos, as well as hematite. It has been suggested that these materials were deposited within a lake.

Written by: Joannah Metz (11 June 2008)

Acquisition date
05 May 2008

Local Mars time
15:11

Latitude (centered)
3.643°

Longitude (East)
338.584°

Spacecraft altitude
274.1 km (170.4 miles)

Original image scale range
27.4 cm/pixel (with 1 x 1 binning) so objects ~82 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.1°

Phase angle
50.1°

Solar incidence angle
50°, with the Sun about 40° above the horizon

Solar longitude
67.6°, Northern Spring

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 32.7°

JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (1587MB)

IRB color
map-projected   (713MB)

JP2 EXTRAS
Black and white
map-projected (846MB)
non-map           (797MB)

IRB color
map projected (315MB)
non-map           (723MB)

Merged IRB
map projected (363MB)

Merged RGB
map-projected (373MB)

RGB color
non map           (687MB)

BONUS
4K (TIFF)
8K (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.