Split Slope Streak in Unnamed Crater

Credit: NASA/JPL/University of Arizona , Posted on: Wednesday, 20 August 2008, 06:30 CDT Download full size image

The northern slope of this unnamed crater in Arabia Terra exhibits light- and dark-toned slope streaks that are common on Mars.

Most scientists believe that slope streaks are formed by the downslope movement of very dry, fine-grained dust, similar to an avalanche on Earth. Darker slope streaks are thought to be younger than lighter slope streaks.

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