HiRISE | Textured Crater Floor in the Arabia Region (ESP_024870

NASA/JPL/University of Arizona

Textured Crater Floor in the Arabia Region
ESP_024870_2080 Science Theme: Geologic Contacts/Stratigraphy

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Surrounding the uplifted bedrock in the center of this large crater is mottled terrain. What possibly caused this?

The floor of the crater might be the result of icy flows. Perhaps an ancient aquifer system was exposed at the time of the impact resulting in the incredible mottled floor we see now, which appears different from the uplifted central peak.

This caption is based on the original science rationale.

Written by: HiRISE Science Team (audio by Tre Gibbs) (30 January 2013)

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Acquisition date:	16 November 2011	Local Mars time:	2:31 PM
Latitude (centered):	27.654 degrees	Longitude (East):	48.662 degrees
Range to target site:	286.7 km (179.2 miles)	Original image scale range:	28.7 cm/pixel (with 1 x 1 binning) so objects ~86 cm across are resolved
Map projected scale:	25 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	1.9 degrees	Phase angle:	40.5 degrees
Solar incidence angle:	39 degrees, with the Sun about 51 degrees above the horizon	Solar longitude:	30.4 degrees, Northern Spring
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North azimuth:	97 degrees	Sub-solar azimuth:	349.8 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	164.8 degrees

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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: Image: NASA/JPL/University of Arizona

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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.