Ceres Geology |
Ceres Geology |
Jan 22 2014, 06:14 PM
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
Paper out tomorrow: http://www.bbc.co.uk/news/science-environment-25849871
Very exciting that we will visit this world soon! |
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Mar 15 2018, 03:22 AM
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Have to wonder if this is partially endogenic, though I can't think of a mechanism unless Ceres is somehow unusually rich in core radioactives. However, since these phenomena appear to coincide with perihelion, a more pertinent question is why Ceres looks so much like a rather ordinary rocky small body dominated by cratering given how fast-acting some of these processes may be.
Volatile deposits may be isolated and widely dispersed, the regolith may vary substantially in thickness, the thermal properties of surface and near-surface materials may vary, all or none of the above. A great many possibilities and questions spring to mind; be fun to see how the pros weigh in. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Mar 15 2018, 04:44 PM
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
On Ahuna Mons, I wonder how intricate the dynamics of downslope mass movement might be. It seems to have been most recently "groomed" by downslope movement, which could mean one single 360° event or a few, or a more or less ongoing process. Perhaps impacts/quakes trigger new flows. And then what is exposed to the surface could be overturned depending on the structural mechanics, and what we see in vis/IR spectroscopy may be a superficial covering that isn't representative of the rest of the structure. This wouldn't require active endogenous geology, if impacts are triggering avalanches, though it doesn't exclude active geology, either.
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