Uplifted Blocks of Light-Toned Layered Deposits
NASA/JPL/University of Arizona
Uplifted Blocks of Light-Toned Layered Deposits
ESP_054753_1825  Science Theme: Tectonic Processes
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Aram Chaos lies within a 280 kilometer-diameter ancient impact crater in the Southern Highlands of Mars. Uplifted blocks of light-toned layers, composed largely of the iron-oxide hematite and water-altered silicates, indicate that this crater once held a lake.

Scientists suggest that these enormous flood channels were carved quickly within just weeks or months by catastrophic outflows of groundwater over 2.5 billion years ago from beneath Aram Chaos and nearby regions. Today dark (basaltic) dunes fill most of the low regions and the etched areas of the uplifted blocks obscure much of the original crater floor.

Aram Chaos is located near the headwaters of Ares Vallis, a large outflow channel system that extends about 1700 kilometers towards the northwest across the ancient cratered highlands before emptying into the Northern Lowlands at Chryse Planitia near the Mars Pathfinder landing site.

Written by: Ginny Gulick (audio: Tre Gibbs)  (9 July 2018)

This is a stereo pair with ESP_055452_1825.
 
Acquisition date
01 April 2018

Local Mars time:
15:24

Latitude (centered)
2.262°

Longitude (East)
340.079°

Spacecraft altitude
272.7 km (170.5 miles)

Original image scale range
27.3 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:
0.0°

Phase angle:
51.4°

Solar incidence angle
51°, with the Sun about 39° above the horizon

Solar longitude
152.6°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  18.4°
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JP2
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map-projected   (582MB)

IRB color
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JP2 EXTRAS
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map-projected  (284MB)
non-map           (303MB)

IRB color
map projected  (106MB)
non-map           (295MB)

Merged IRB
map projected  (146MB)

Merged RGB
map-projected  (138MB)

RGB color
non map           (283MB)
ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
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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.