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Originally posted by Phage
reply to post by beebs
The dark streaks are slides of dark material on top of light material.
There is a vast region of sand dunes at high northern latitudes on Mars. In the winter, a layer of carbon dioxide ice covers the dunes, and in the spring as the sun warms the ice it evaporates. This is a very active process, and sand dislodged from the crests of the dunes cascades down, forming dark streaks.
[edit on 3/24/2010 by Phage]
In its solid state, carbon dioxide is commonly called dry ice.
Originally posted by amazing
What the heck are those tree things? They look like trees but...are they just rocks sticking up like that? How weird! That's the craziest thing I've ever seen. Send a rover up there now!!!!!! I want a closer look!