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Hundreds of layers of sedimentary rock exposed by erosion on the floor of a 64 kilometer-wide (40 mile-wide) meteor crater in western Arabia Terra, Mars, attest to a dynamic early history for the red planet. This high-resolution image from NASA's Mars Global Surveyor spacecraft shows an example enhanced by dark, windblown sand banked up against scarps 5-10 meters high (5-11 yards) formed by eroded rock layers. The west Arabia Terra crater is located at 8 degrees north, 7 degrees west, on the Martian surface. The layers provide a record of repeated, episodic changes that took place at some time far in the Martian past. Mars Global Surveyor is managed for NASA's Office of Space Science, Washington, D.C., by the Jet Propulsion Laboratory, Pasadena, Calif. JPL is a division of the California Institute of Technology. Malin Space Science Systems, San Diego, Calif., built and operates the camera system. JPL's industrial partner is Lockheed Martin Astronautics, Denver, Colo., which developed and operates the spacecraft. #####
Description
Hundreds of layers of sedimentary rock exposed by erosion on the floor of a 64 kilometer-wide (40 mile-wide) meteor crater in western Arabia Terra, Mars, attest to a dynamic early history for the red planet. This high-resolution image from NASA's Mars Global Surveyor spacecraft shows an example enhanced by dark, windblown sand banked up against scarps 5-10 meters high (5-11 yards) formed by eroded rock layers. The west Arabia Terra crater is located at 8 degrees north, 7 degrees west, on the Martian surface. The layers provide a record of repeated, episodic changes that took place at some time far in the Martian past. Mars Global Surveyor is managed for NASA's Office of Space Science, Washington, D.C., by the Jet Propulsion Laboratory, Pasadena, Calif. JPL is a division of the California Institute of Technology. Malin Space Science Systems, San Diego, Calif., built and operates the camera system. JPL's industrial partner is Lockheed Martin Astronautics, Denver, Colo., which developed and operates the spacecraft. #####
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