Flood-Emplaced Blocks in Holden Crater
NASA/JPL/University of Arizona
Flood-Emplaced Blocks in Holden Crater
ESP_019256_1530  Science Theme: Aeolian Processes
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This image shows blocks of bright, layered rock embedded in darker material that are thought to have been deposited by a giant flood that occurred when Uzboi Valles breached the rim of Holden Crater (Grant et al., 2008, Geology v. 36, p. 195-198).

The magnitude of this ancient flood is indicated by the large size of the blocks (up to 100 meters across). The blocks do not appear to have been moved very far by the flood, as they are not rounded.

Holden Crater is one of the four potential landing sites for the Mars Science Laboratory rover, to be launched in November 2011. The bright layered rock in this image probably contain a record of a wetter, warmer period early in Martian history, and are therefore a prime target for exploration.

Written by: Ken Herkenhoff   (20 October 2010)

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Acquisition date
04 September 2010

Local Mars time:
15:37

Latitude (centered)
-26.591°

Longitude (East)
325.219°

Range to target site
260.2 km (162.6 miles)

Original image scale range
26.0 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
0.3°

Phase angle:
67.0°

Solar incidence angle
67°, with the Sun about 23° above the horizon

Solar longitude
143.4°, Northern Summer

North azimuth:
97°

Sub-solar azimuth:
36.5°
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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/University of Arizona



Postscript
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.