This image taken by NASA's 2001 Mars Odyssey shows two craters in Arabia Terra on Mars, in the old cratered highlands, are surrounded by many small mesas.

Released 3 June 2003

Two craters in Arabia Terra, in the old cratered highlands, are surrounded by many small mesas. The two craters are partially shown in the central-left and extreme upper-right of the image. These mesas are remnants of ejecta blankets of debris that were cast out when the impact craters originally formed. These former ejecta blankets formed a material resistant to weathering, and so they remain on the surface as mesas, while the surrounding terrain has been stripped away.

Image information: VIS instrument. Latitude 17.1, Longitude 8 East (352 West). 19 meter/pixel resolution.

Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

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 (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey 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.

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