Gullies with possible water-carved channels on Mars

Gullies with possible water-carved channels on Mars

Fig. 8.28 . This false-color image, taken from a high-resolution camera aboard the Mars Reconnaissance Orbiter, shows gully channels in a crater in the southern highlands of Mars. The gullies emanating from the rocky cliffs near the crater rim (upper left) show meandering and braided patterns characteristic of water-carved channels. These gullies offer strong evidence of liquid water flowing on Mars, perhaps within the last few million years, whereas different, fresh gully deposits in other regions may have resulted from landslides of loose, dry material. North is approximately up and the image width is about 1 kilometer. (Courtesy of NASA/JPL/ U. Arizona.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University