CRISM Corner |
CRISM Corner |
Guest_AlexBlackwell_* |
Sep 28 2006, 02:14 AM
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APL-Built Mineral-Mapping Imager Begins Mission at Mars
JHU/APL For Immediate Release September 27, 2006 See also A.J.S. Rayl's story at TPS. EDIT: I changed the topic title because, as I understand it from the press release, the cover was opened, not jettisoned. This post has been edited by AlexBlackwell: Sep 28 2006, 04:48 PM |
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Oct 2 2007, 04:39 AM
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
These gullies will remain interesting Martian landforms for a long time to come. If the CRISM observations really do rule out surface salt deposits at the distal ends of these things, it will be a setback for theories invoking flowing, liquid water. I've looked at a lot of the public HiRise images of gullies and I get the distinct impression that gully source layers at escarpments are losing physical strength and falling apart, contributing fine sediments to fall down the purported steep slopes.
I can imagine layers of fine sediments cemented by sparse ice, falling apart as the ice sublimes. Water could be involved, but it doesn't need to be flowing on the surface. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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