Crater Intersecting Wrinkle Ridge
NASA/JPL/UArizona
Crater Intersecting Wrinkle Ridge
ESP_014260_1675  Science Theme: Tectonic Processes
“Wrinkle ridges” are topographic structures produced by subsurface faulting; they are commonly found on both the Moon and Mars.

This image shows a site where a wrinkle ridge intersects a crater; the ridge is a large feature and extends well outside this observation. The spur just inside the crater rim is roughly in line with the wrinkle ridge structure, and probably represents enhanced crater collapse along the fault line.

An alternative possibility is that this spur was created by movement of the wrinkle ridge fault after the crater formed, but this is unlikely because the outer rim of the crater is not cut. Observations like this help constrain the relative timing of events on Mars.



Written by: Colin Dundas  (30 September 2009)
 
Acquisition date
11 August 2009

Local Mars time
14:18

Latitude (centered)
-12.198°

Longitude (East)
279.599°

Spacecraft altitude
257.1 km (159.8 miles)

Original image scale range
51.4 cm/pixel (with 2 x 2 binning) so objects ~154 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.1°

Phase angle
33.8°

Solar incidence angle
34°, with the Sun about 56° above the horizon

Solar longitude
319.5°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  355.5°
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RGB: red-green-blue
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Black & white is 5 km across; enhanced color about 1 km
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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:
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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.