Erosion and Deposition in Schaeberle Crater
NASA/JPL-Caltech/UArizona
Erosion and Deposition in Schaeberle Crater
ESP_042527_1555  Science Theme: Geologic Contacts/Stratigraphy
Schaeberle Crater is a large, heavily-infilled crater with many interesting features. This image shows a window into the crater fill deposit, showcasing eroding bedrock and wind-formed landforms.

This pit is located near the geometric center of our image, making it a central pit crater. Central pit craters are thought to form from impact melt draining through subsurface cracks in the deepest part of the crater shortly following impact.

A closeup image shows light-toned bedrock and a small cliff that appears to be weathering away. Below the cliff there are several different types of aeolian features, including ripples and transverse aeolian ridges (TAR). The sand that forms the small, bluish ripples may be weathering out of the cliff face, in contrast to the larger, light-toned TAR which are thought to be currently inactive.

More of the TAR are visible in another closeup image. In this case, they are clearly covered by a dark, ripple-covered sand sheet. We have only imaged this location once, so it is impossible to determine whether or not the sand sheet is blowing in the wind. But due to repeated HiRISE imaging in other areas, active dunes are now known to be common across Mars and we can reasonably speculate that these dunes are moving, too.

Written by: HiRISE Targeting Specialists (narration: Tre Gibbs)  (13 January 2016)

This is a stereo pair with ESP_045626_1555.
 
Acquisition date
23 August 2015

Local Mars time
14:42

Latitude (centered)
-24.280°

Longitude (East)
50.128°

Spacecraft altitude
254.8 km (158.3 miles)

Original image scale range
54.0 cm/pixel (with 2 x 2 binning) so objects ~162 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
18.9°

Phase angle
68.7°

Solar incidence angle
54°, with the Sun about 36° above the horizon

Solar longitude
31.3°, Northern Spring

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  46.0°
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4K (TIFF)

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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.