Slope Streak Stripes on Crater Walls
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Slope Streak Stripes on Crater Walls

March 9, 2012
Radially-oriented slope streaks paint stripes on the sides of this crater in Arabia Terra. Slope streaks are common features on steep slopes in Mars' dusty terrain, but this crater is a particularly dramatic example.

Slope streaks, thought to be the result of shallow cascades of dust, are dark when fresh and fade as they age (see this highly stretched subimage that emphasizes the color difference between streaks). So it is clear that this crater experienced repeated episodes of streak formation, apparently around its entire circumference.

Written by: Nicole Baugh

Credits: NASA/JPL/University of Arizona

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