HiRISE | Ancient Lava Plain in Thaumasia Planum (PSP_002432

NASA/JPL/University of Arizona

Ancient Lava Plain in Thaumasia Planum
PSP_002432_1525 Science Theme: Tectonic Processes

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This observation samples part of an ancient lava plain in Thaumasia Planum. The stack of lava flows has been folded into dunes the size of a chain of hills, as is visible in the center of the image.

The lava and the dunes has been degraded by erosion. The numerous craters and dunes attest to two of the erosional processes—meteorite impacts and the wind.
Written by: Maria Banks (9 June 2010)

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Acquisition date:	01 February 2007	Local Mars time:	3:47 PM
Latitude (centered):	-27.4 degrees	Longitude (East):	294.8 degrees
Range to target site:	252.7 km (157.9 miles)	Original image scale range:	25.3 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved
Map projected scale:	25 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	0.3 degrees	Phase angle:	61.8 degrees
Solar incidence angle:	62 degrees, with the Sun about 28 degrees above the horizon	Solar longitude:	176.7 degrees, Northern Summer
For non-map projected products:
North azimuth:	97 degrees	Sub-solar azimuth:	23.1 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	197.7 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.