A Dark-Toned, Pitted Mound in a Crater in Northeast Arabia Terra
NASA/JPL-Caltech/UArizona
A Dark-Toned, Pitted Mound in a Crater in Northeast Arabia Terra
ESP_034970_2040  Science Theme: Landscape Evolution
This fascinating observation shows us a dark-toned mound with pits inside an impact crater. Are these pits the result of sublimation?

The crater itself is an ancient one, as evidenced by the eroded rim. For the mound inside, HiRISE resolution can give us a closer look at textural features that might help explain what we're looking at: layers in pit walls, or perhaps cracks from expansion?

Written by: HiRISE Science Team (narration: Tre Gibbs)  (26 March 2014)

This is a stereo pair with ESP_034324_2040.
 
Acquisition date
11 January 2014

Local Mars time
15:08

Latitude (centered)
23.831°

Longitude (East)
68.121°

Spacecraft altitude
281.1 km (174.7 miles)

Original image scale range
28.1 cm/pixel (with 1 x 1 binning) so objects ~84 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
2.1°

Phase angle
40.7°

Solar incidence angle
43°, with the Sun about 47° above the horizon

Solar longitude
74.8°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  16.7°
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JP2
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JP2 EXTRAS
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map-projected  (405MB)
non-map           (377MB)

IRB color
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non-map           (343MB)

Merged IRB
map projected  (202MB)

Merged RGB
map-projected  (195MB)

RGB color
non map           (336MB)
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
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.