File:Olivine valles marineris.jpg

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DescriptionOlivine valles marineris.jpg	Olivine mineral in valles marineris, mars Original title: PIA04262: Ganges Chasma Original Caption Released with Image: This false-color infrared image was taken by the camera system on the Mars Odyssey spacecraft over part of Ganges Chasma in Valles Marineris (approximately 13 degrees S, 318 degrees E). The infrared image has been draped over topography data obtained by Mars Global Surveyor. The color differences in this image show compositional variations in the rocks exposed in the wall and floor of Ganges (blue and purple) and in the dust and sand on the rim of the canyon (red and orange). The floor of Ganges is covered by rocks and sand composed of basaltic lava that are shown in blue. A layer that is rich in the mineral olivine can be seen as a band of purple in the walls on both sides of the canyon, and is exposed as an eroded layer surrounding a knob on the floor. Olivine is easily destroyed by liquid water, so its presence in these ancient rocks suggests that this region of Mars has been very dry for a very long time. The mosaic was constructed using infrared bands 5, 7, and 8, and covers an area approximately 150 kilometers (90 miles) on each side. This simulated view is toward the north. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The thermal emission imaging system was provided by Arizona State University, Tempe. Lockheed Martin Astronautics, Denver, Colo., is the prime contractor for the project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. Mission: 2001 Mars Odyssey Spacecraft: 2001 Mars Odyssey Instrument: Thermal Emission Imaging System
Source	http://photojournal.jpl.nasa.gov/catalog/PIA04262
Author	NASA/JPL/Arizona State University
Permission (Reusing this file)	NASA public domain

	Date/Time	Thumbnail	Dimensions	User	Comment
current	07:55, 16 November 2010		1,463 × 1,203 (357 KB)	Garrondo	higher quality
	22:50, 23 February 2007		374 × 308 (72 KB)	Sbandrews	{{Information \|Description=Olivine mineral in valles marineris, mars \|Source=http://rst.gsfc.nasa.gov/Sect19/Sect19_13a.html \|Date=23-2-07 \|Author=NASA \|Permission=NASA public domain \|other_versions= }}

File:Olivine valles marineris.jpg

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