Sediments inside Aram Crater
Sediments inside Aram Crater
ESP_027998_1825  Science Theme: Sedimentary/Layering Processes
Aram Chaos is characterized by chaotic terrains overlain by approximately 900 meters of sediments within the 280-kilometer diameter Aram Crater.

This HiRISE image shows the chaotic terrain as a darker unit with grooves and ridges. The sediments include the brighter rocks that appear very rough due to ridges and furrows. Minerals identified within Aram include sulfates and ferric oxides, which are similar to those seen at the Opportunity rover landing site in Meridiani Planum.

It has been proposed that a lake once existed within Aram Crater and laid down the sediments.

Written by: Cathy Weitz  (5 September 2012)
Acquisition date
17 July 2012

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
272.8 km (169.6 miles)

Original image scale range
54.6 cm/pixel (with 2 x 2 binning) so objects ~164 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
53°, with the Sun about 37° above the horizon

Solar longitude
140.6°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  24.0°
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

Black and white
map-projected   (327MB)

IRB color
map-projected   (182MB)

Black and white
map-projected  (168MB)
non-map           (187MB)

IRB color
map projected  (82MB)
non-map           (191MB)

Merged IRB
map projected  (340MB)

Merged RGB
map-projected  (315MB)

RGB color
non map           (179MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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

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.