HiRISE | The Floor of Toro Crater (ESP_025067

NASA/JPL/University of Arizona

The Floor of Toro Crater
ESP_025067_1970 Science Theme: Hydrothermal Processes

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Toro Crater may have experienced hydrothermal alteration, producing diverse minerals. The mineral diversity leads to diverse color in HiRISE, especially when enhanced as in this subimage.

In general the blue and green colors indicate unaltered minerals like pyroxene and olivine, whereas the warmer colors indicate alteration into clays and other minerals. The linear north-south trending features are windblown dunes that are much younger than the bedrock.

Written by: Alfred McEwen (1 February 2012)

This is a stereo pair with ESP_025344_1970.

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Acquisition date:	01 December 2011	Local Mars time:	2:39 PM
Latitude (centered):	17.001 degrees	Longitude (East):	71.717 degrees
Range to target site:	277.8 km (173.6 miles)	Original image scale range:	55.6 cm/pixel (with 2 x 2 binning) so objects ~167 cm across are resolved
Map projected scale:	50 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	0.6 degrees	Phase angle:	39.0 degrees
Solar incidence angle:	38 degrees, with the Sun about 52 degrees above the horizon	Solar longitude:	37.4 degrees, Northern Spring
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North azimuth:	97 degrees	Sub-solar azimuth:	9.0 degrees
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North azimuth:	270 degrees	Sub solar azimuth:	182.8 degrees

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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.