NASA / JPL / UNIVERSITY OF ARIZONA / SCIENCE PHOTO LIBRARY NASA / JPL / UNIVERSITY OF ARIZONA / SCIENCE PHOTO LIBRARY
Fluvial erosion on Mars. Satellite image of the Candor Chasma region of the Valles Marineris canyon. It is thought that this canyon initially formed as the result of tectonic fracturing of the upper crust of Mars. The ridged areas on the valley floor are intepretated as being joints that were exposed during subsequent fluvial erosion (erosion by flowing water). This image was obtained by the High Resolution Imaging Science Experiment (HiRise) camera on board the Mars Reconnaissance Orbiter, December 2, 2006.
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