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Gullies in the Eastern Hellas Region of Mars November 17, 2007

Posted by jtintle in Planets, Space Fotos.
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Gullies in the Eastern Hellas Region of Mars
Credit:

NASA/JPL/University of Arizona

 

Description:

This image shows several gullies along the southern wall of unnamed crater in the eastern Hellas region of Mars. This particular crater has gullies on both the polar and equatorial-facing walls. The gully floors appear to be filled with rough-textured, somewhat knobby-looking materials. As multiple gullies located upslope feed into a single gully reaching the crater floor, the materials have converged to form a large deposit. Lineations parallel to apparent flow direction are evident on the textured surface. It’s not clear if liquid flows carved the gullies at this location, but the eastern Hellas region is well known for its abundant ice-rich flow features, such as lobate debris aprons at the base of knobs and massifs. Thus, the gully floor materials may have also incorporated ice at some time in the recent past and moved downslope as possible glacial-like flows.

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