Hues in a Martian crater slope
Impact craters expose the subsurface materials on the steep slopes of Mars. However, these slopes often experience rockfalls and debris avalanches that keep the surface clean of dust, revealing a variety of hues, like in this enhanced-color image from NASA's Mars Reconnaissance Orbiter, representing different rock types. The bright reddish material at the top of the crater rim is from a coating of the Martian dust.
|Image acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on Feb. 28, 2011 |
[Credit: NASA/JPL/University of Arizona]
Source: NASA [January 05, 2017]