Cratered Dune Forms
NASA/JPL/University of Arizona

Cratered Dune Forms
ESP_025389_1690  Science Theme: Sedimentary/Layering Processes
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One of the scientific goals for taking this observation is to create a stereo pair with another HiRISE image. From stereo pairs, which are pictures of the same area but at different angles, HiRISE creates 3D or anaglyph pictures.

Known since at least 2003, this is a wonderful case of aeolian sandstone that (a) preserves its original sand dune bedform shapes and (b) lies unconformably over a previously-eroded surface of layered sedimentary rock.

This caption is based on the original science rationale.

Written by: HiRISE Science Team   (28 March 2012)

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Acquisition date:26 December 2011 Local Mars time: 2:55 PM
Latitude (centered):-11.144° Longitude (East):284.903°
Range to target site:263.2 km (164.5 miles)Original image scale range:52.7 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved
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Emission angle:6.3° Phase angle:48.0°
Solar incidence angle:53°, with the Sun about 37° above the horizon Solar longitude:48.6°, Northern Spring
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