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Iapetus - Black on white or white on black?
Ice and Gunk
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SFJCody
post Sep 14 2007, 07:40 AM
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Seems to be a lot of dispute on this subject... I think it's ice from the interior, but what does everyone else think?

Edit:

This world seems very complex so the question could perhaps be phrased as 'which of these options is most responsible for the Iapetan dichotomy?'
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Bill Harris
post Sep 20 2007, 04:26 PM
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RE: edstrick and the chemist, posts 40 & 42--

One of the things that has amazed and puzzled me from the first day are the flow lobes visible on the downhill side of these scarps/crater walls. Tha attached is an adaption of "iapetus_snow_1" showing multiple flow lobes that look all the world like snowy avalanches. Not unusual in the Alps, but this is a small airless world with temperatures in the -100's. And you can find these flow lobes frequently. Dunno what it means, capt'n, but it's gotta be significant...
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David
post Sep 20 2007, 04:51 PM
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QUOTE (Bill Harris @ Sep 20 2007, 04:26 PM) *
RE: edstrick and the chemist, posts 40 & 42--

One of the things that has amazed and puzzled me from the first day are the flow lobes visible on the downhill side of these scarps/crater walls. Tha attached is an adaption of "iapetus_snow_1" showing multiple flow lobes that look all the world like snowy avalanches. Not unusual in the Alps, but this is a small airless world with temperatures in the -100's. And you can find these flow lobes frequently. Dunno what it means, capt'n, but it's gotta be significant...


There's another one, just as striking, above the one you outlined; it seems to curve down and cut off two other flows on the slopes that come down from the left, apparently having flowed over them.
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Posts in this topic
- SFJCody   Iapetus - Black on white or white on black?   Sep 14 2007, 07:40 AM
- - ngunn   I think the responses you offer are inadequate. Gl...   Sep 14 2007, 08:03 AM
- - ugordan   Where's the option "Black on White - blac...   Sep 14 2007, 08:04 AM
- - akuo   Is this a Michael Jackson song? Oh Iapetus, I wou...   Sep 14 2007, 08:15 AM
- - volcanopele   I would prefer a both option: white on black in so...   Sep 14 2007, 08:54 AM
|- - JRehling   QUOTE (volcanopele @ Sep 14 2007, 01:54 A...   Sep 14 2007, 04:15 PM
- - Juramike   (Objects collide) Object one: "Heeeey, you ...   Sep 14 2007, 03:41 PM
- - nprev   ...of course, in the Family Guy parody of this com...   Sep 14 2007, 04:00 PM
- - Michael Capobianco   I have to choose white on black on white - black e...   Sep 14 2007, 04:33 PM
- - lyford   The only thing that I can say is that after readin...   Sep 14 2007, 05:00 PM
- - MarcF   It was not a good idea to go to vacation far from ...   Sep 15 2007, 04:26 PM
- - tasp   I would pick transparent material everywhere, keye...   Sep 15 2007, 04:59 PM
|- - David   QUOTE (tasp @ Sep 15 2007, 04:59 PM) I wo...   Sep 15 2007, 08:34 PM
|- - ugordan   QUOTE (David @ Sep 15 2007, 09:34 PM) whe...   Sep 15 2007, 09:38 PM
|- - David   QUOTE (ugordan @ Sep 15 2007, 09:38 PM) C...   Sep 16 2007, 03:09 AM
- - tasp   Here is another 'negative' print of Iapetu...   Sep 16 2007, 04:00 AM
- - edstrick   I get an overwhelming impression that the white an...   Sep 16 2007, 05:23 AM
- - Bill Harris   You're right, Ed, this is all very mysterious....   Sep 16 2007, 10:41 AM
|- - JRehling   QUOTE (Bill Harris @ Sep 16 2007, 03:41 A...   Sep 17 2007, 05:22 AM
- - dvandorn   I agree, Bill -- the distribution of dark material...   Sep 16 2007, 02:37 PM
|- - David   QUOTE (dvandorn @ Sep 16 2007, 02:37 PM) ...   Sep 16 2007, 05:32 PM
|- - dvandorn   QUOTE (David @ Sep 16 2007, 12:32 PM) Wha...   Sep 17 2007, 04:48 PM
|- - nprev   QUOTE (dvandorn @ Sep 17 2007, 09:48 AM) ...   Sep 17 2007, 05:56 PM
- - tasp   I was wondering about those streamlined (not quite...   Sep 16 2007, 05:38 PM
|- - volcanopele   QUOTE (tasp @ Sep 16 2007, 10:38 AM) I wa...   Sep 17 2007, 05:18 AM
- - ilbasso   Seeing that old picture of Stevie Wonder made me t...   Sep 16 2007, 05:45 PM
- - tasp   I can't help but think in the initial flush of...   Sep 17 2007, 04:10 AM
|- - David   QUOTE (tasp @ Sep 17 2007, 04:10 AM) I ca...   Sep 17 2007, 06:10 AM
- - tasp   Hyperion.   Sep 17 2007, 01:53 PM
|- - David   QUOTE (tasp @ Sep 17 2007, 01:53 PM) Hype...   Sep 17 2007, 02:32 PM
|- - ngunn   QUOTE (David @ Sep 17 2007, 03:32 PM) no ...   Sep 17 2007, 04:00 PM
- - nprev   Like oDoug, I too noticed the apparent "dunin...   Sep 17 2007, 04:27 PM
|- - dvandorn   QUOTE (nprev @ Sep 17 2007, 11:27 AM) Lik...   Sep 17 2007, 04:59 PM
- - tasp   Here is some more 'ponding' to contemplate...   Sep 17 2007, 05:37 PM
- - tasp   And the comparison. {I suppose it would be nice...   Sep 17 2007, 05:39 PM
- - tasp   Crikey, there is something hinky going on tweenst ...   Sep 17 2007, 05:43 PM
- - tasp   We note earth's moon to have an orbit about ea...   Sep 17 2007, 06:08 PM
- - nprev   True, but Earth's Moon is thought to be an art...   Sep 17 2007, 06:12 PM
- - alan   There was a paper a couple of years ago linking Ti...   Sep 17 2007, 07:42 PM
- - edstrick   What can I say.. just look at this d__n stuff... A...   Sep 18 2007, 08:24 AM
|- - TheChemist   QUOTE (edstrick @ Sep 18 2007, 11:24 AM) ...   Sep 20 2007, 01:34 PM
|- - ugordan   QUOTE (TheChemist @ Sep 20 2007, 03:34 PM...   Sep 20 2007, 01:45 PM
- - dvandorn   OK -- I understand your conclusion, here. But I s...   Sep 18 2007, 01:46 PM
|- - The Messenger   QUOTE (dvandorn @ Sep 18 2007, 07:46 AM) ...   Sep 19 2007, 05:20 AM
|- - ugordan   QUOTE (dvandorn @ Sep 18 2007, 03:46 PM) ...   Sep 20 2007, 02:04 PM
- - TheChemist   Ugordan, I think that I see wide openings (holes) ...   Sep 20 2007, 02:00 PM
- - Bill Harris   RE: edstrick and the chemist, posts 40 & 42-- ...   Sep 20 2007, 04:26 PM
|- - David   QUOTE (Bill Harris @ Sep 20 2007, 04:26 P...   Sep 20 2007, 04:51 PM
|- - ustrax   Tilmann Denk's "vote" at spacEurope:...   Sep 24 2007, 04:35 PM
- - dvandorn   After seeing some of the contrast-enhanced images ...   Sep 24 2007, 04:59 PM
|- - JRehling   QUOTE (dvandorn @ Sep 24 2007, 09:59 AM) ...   Sep 24 2007, 08:03 PM
|- - David   QUOTE (JRehling @ Sep 24 2007, 08:03 PM) ...   Sep 24 2007, 09:24 PM
- - Bill Harris   My first, and continuing, impression of the dicho...   Sep 24 2007, 10:04 PM
- - David   QUOTE (Bill Harris @ Sep 24 2007, 10:04 P...   Sep 25 2007, 02:48 AM


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