Breccia with Large Clasts
NASA/JPL/University of Arizona

Breccia with Large Clasts
ESP_025600_1735  Science Theme: Sedimentary/Layering Processes
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In this beautiful image there appears to be a breccia layer, or a layer composed of rock fragments embedded in a finer material. This particular breccia is made up of fragments (or "clasts" as they are known to geologists) so large they can be seen by HiRISE.

The breccia layer, seen most easily near the center of this image, seems to be more resistant to erosion than the surrounding material, serving as a caprock to protect the layers beneath it.

The HiRISE team is planning on acquiring another image over this area in order to create a stereo (3-D) pair. This will help scientists better understand the topography and stratigraphy of the area.

Written by: HiRISE Science Team (audio by Tre Gibbs)   (23 May 2012)

This is a stereo pair with ESP_026523_1735.



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Acquisition date:12 January 2012 Local Mars time: 3:01 PM
Latitude (centered):-6.522° Longitude (East):284.710°
Range to target site:269.5 km (168.4 miles)Original image scale range:27.0 cm/pixel (with 1 x 1 binning) so objects ~81 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:14.4° Phase angle:42.0°
Solar incidence angle:52°, with the Sun about 38° above the horizon Solar longitude:55.9°, Northern Spring
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North azimuth:99° Sub-solar azimuth:40.1°
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North azimuth:270°Sub solar azimuth:212.4°

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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.