Image: 169384main pia09189-330

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Description: Ridges as Evidence of Fluid Alteration: Tectonic fractures within the Candor Chasma region of Valles Marineris, Mars, retain ridge-like shapes as the surrounding bedrock erodes away. This points to past episodes of fluid alteration along the fractures and reveals clues into past fluid flow and geochemical conditions below the surface. The High Resolution Imaging Science Experiment camera on NASA's Mars Reconnaissance Orbiter took this image on Dec. 2, 2006. The image is approximately 1 kilometer (0.6 mile) across. Illumination from the upper left. This view is a portion of the camera's image catalogued as PSP_001641_1735.
Title: 169384main pia09189-330
Credit: http://www.nasa.gov/mission_pages/MRO/multimedia/pia09189.html
Author: NASA
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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