Disrupted Sediments in Acidalia Planitia
Disrupted Sediments in Acidalia Planitia
ESP_064090_2250  Science Theme: Tectonic Processes
This color HiRISE view shows a pitted, blocky surface, but also more unusually, it has contorted, irregular features.

Although there are impact craters in this area, some of the features (like in the lower center of the cutout) are too irregular to be relic impact craters or river channels. One possibility is that sedimentary layers have been warped from below to create these patterns. The freezing and thawing of subsurface ice is a mechanism that could have caused this.

Acidalia Planitia is part of the northern plains of Mars, at a latitude of 44 degrees north.

Written by: John Bridges (narration: Tre Gibbs)  (16 April 2020)

This is a stereo pair with ESP_064011_2250.
Acquisition date
29 March 2020

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
301.3 km (187.3 miles)

Original image scale range
63.7 cm/pixel (with 2 x 2 binning) so objects ~191 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
62°, with the Sun about 28° above the horizon

Solar longitude
174.3°, Northern Summer

For non-map projected images
North azimuth:  98°
Sub-solar azimuth:  339.4°
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
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RGB color
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Black and white
map-projected   (486MB)

IRB color
map-projected   (270MB)

Black and white
map-projected  (255MB)
non-map           (206MB)

IRB color
map projected  (128MB)
non-map           (191MB)

Merged IRB
map projected  (502MB)

Merged RGB
map-projected  (462MB)

RGB color
non map           (179MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

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.