Ceres Low-Altitude Mapping Orbit (LAMO) |
Ceres Low-Altitude Mapping Orbit (LAMO) |
Dec 22 2015, 04:50 PM
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#31
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Senior Member Group: Members Posts: 3008 Joined: 30-October 04 Member No.: 105 |
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Mar 11 2016, 10:20 PM
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#32
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
Color-coded elevation map of Ahuna Mons:
http://photojournal.jpl.nasa.gov/catalog/PIA20399 Ahuna appears to be part of a broader plateau. Is it merely the most recently formed structure in an uplift and/or eruptive complex? The adjacent upland ('Ancestral Ahuna') shows no signs of recent uplift, i.e. it may have been pummeled beyond recognition by impacts. This reminds me of one of the Hawaiian islands, with an actively erupting shield and a surrounding complex of heavily eroded extinct volcanoes (not to say these Cerean structures have similar volcanics or tectonics.... and certainly not similar erosion). Edit: Perhaps some of the other 'mons' around Ceres could be similar structures but are older and now unrecognizable. |
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Mar 13 2016, 04:04 PM
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#33
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
Ahuna appears to be part of a broader plateau. Is it merely the most recently formed structure in an uplift and/or eruptive complex? Edit: Perhaps some of the other 'mons' around Ceres could be similar structures but are older and now unrecognizable. I agree, and noted the similarity to an Terrestrial uplift in the Blender-render images from JohnVV's post on March 8 - thank you JohnVV for your contribution. On Earth such "uplifts" sometime happen in areas that have had an ice age, and mountains pop up again after having been pressed down by the ice. I don't say that is the case here, and rather think it had to do with a change in mass distribution in one ridge already there but enhanced/caused by the nearby crater. This would also be the cause of the chaotic terrain on top. Even if my line of thought turn out to be wrong, I do think that Ahuna now is less of a mystery than in the early images. |
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