Bedforms and Bedrock
NASA/JPL/University of Arizona
Bedforms and Bedrock
ESP_055407_1485  Science Theme: 
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In this Context Camera image in Terra Cimmeria, we see a 30-kilometer diameter crater, filled-in with materials that created bedrock, and through subsequent erosion, wind-driven particles.

There is a ring of exposed light-toned bedrock at the base of the crater wall. This distinctive ring suggests high winds climbing up the crater wall slope may be responsible for the erosion and the extent of bedrock exposure we see. A close-up on the southeastern part of these deposits shows a mound of bedrock with beautiful color contrasts. The variation in color represents diverse minerals in the rock.

There is also a small degraded crater (about 300-meter diameter) to the left of the exposed bedrock. Fine-grained materials trapped inside the crater appear as wind-driven ripples or small dune-forms.

Written by: Alyssa Werynski, Jennifer Newman, Sarah Simpson, Livio Tornabene (audio: Tre Gibbs)  (1 October 2018)
 
Acquisition date
22 May 2018

Local Mars time:
15:36

Latitude (centered)
-31.196°

Longitude (East)
130.685°

Spacecraft altitude
253.2 km (158.3 miles)

Original image scale range
25.3 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
0.3°

Phase angle:
60.0°

Solar incidence angle
60°, with the Sun about 30° above the horizon

Solar longitude
180.1°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  26.5°
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non-map           (409MB)

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non-map           (346MB)

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RGB color
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IRB: infrared-red-blue
RGB: red-green-blue
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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.