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Poll: Iapetus dark material source, A poll about the source of the dark material on Iapetus
Michael Capobian...
post Sep 6 2007, 03:38 AM
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As we approach Iapetus for this close fly-by, I thought it might be fun to try and predict if, after we see the close up images of the transition region and Voyager Mountains, the source of the dark material will be obviously endogenic or exogenic, or there will still be no obvious explanation.

I'll go for the longshot, endogenic.

Michael
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Posts in this topic
- Michael Capobianco   Poll: Iapetus dark material source   Sep 6 2007, 03:38 AM
- - nprev   Mmm...might not be obvious from this encounter, bu...   Sep 6 2007, 03:54 AM
- - David   The black stuff is all on the leading edge of Iape...   Sep 6 2007, 04:02 AM
- - tasp   Gunk on Iapetus and Hyperion dark crater bottoms a...   Sep 6 2007, 04:06 AM
- - dvandorn   I also have to go with exogenic. From the closest...   Sep 6 2007, 10:54 AM
- - ngunn   I thought it was supposed to be just the residue l...   Sep 6 2007, 11:07 AM
- - ugordan   I agree with ngunn here, the sublimation model app...   Sep 6 2007, 11:10 AM
|- - ngunn   QUOTE (ugordan @ Sep 6 2007, 12:10 PM) I ...   Sep 6 2007, 11:36 AM
- - ugordan   Yes, they might both be a consequence of a third f...   Sep 6 2007, 11:39 AM
- - ngunn   Agreed. The ridge is ancient, the repainting must ...   Sep 6 2007, 11:43 AM
- - tasp   Ridge and splotch are unrelated other than high en...   Sep 6 2007, 12:52 PM
- - Pavel   Do we have any proof that it's dark material o...   Sep 6 2007, 01:19 PM
|- - Bjorn Jonsson   QUOTE (Pavel @ Sep 6 2007, 01:19 PM) Do w...   Sep 6 2007, 02:39 PM
- - Juramike   I agree. For all it's amazing curiosity and ...   Sep 6 2007, 01:20 PM
- - nprev   ...well, to be fair, a hypothetical Titanian Juram...   Sep 6 2007, 01:36 PM
- - ngunn   QUOTE (Pavel @ Sep 6 2007, 02:19 PM) Do w...   Sep 6 2007, 02:38 PM
- - nprev   I agree, Bjorn, and thanks ngunn for answering my ...   Sep 6 2007, 03:18 PM
- - djellison   I don't 'do' Saturnian moons (havn...   Sep 6 2007, 03:23 PM
- - nprev   Er...you can try the first cup, Big Guy...I'll...   Sep 6 2007, 03:26 PM
- - antoniseb   My take is pretty close to ngunn's. It looks t...   Sep 6 2007, 03:29 PM
|- - nprev   QUOTE (antoniseb @ Sep 6 2007, 08:29 AM) ...   Sep 6 2007, 03:37 PM
- - Juramike   VIMS might be able to provide some further data: ...   Sep 6 2007, 05:49 PM
- - ugordan   You can't really directly compare Titan's ...   Sep 6 2007, 05:51 PM
|- - Juramike   QUOTE (ugordan @ Sep 6 2007, 01:51 PM) Yo...   Sep 6 2007, 06:22 PM
- - JRehling   QUOTE (Michael Capobianco @ Sep 5 2007, 08...   Sep 6 2007, 06:13 PM
|- - Stu   ... and the award for most "ugh, that's d...   Sep 6 2007, 06:36 PM
|- - JRehling   Yes, the creeping crud is a disturbing notion. It...   Sep 6 2007, 09:45 PM
|- - Gsnorgathon   QUOTE (JRehling @ Sep 6 2007, 09:45 PM) ....   Sep 7 2007, 06:11 AM
|- - ngunn   QUOTE (Gsnorgathon @ Sep 7 2007, 07:11 AM...   Sep 7 2007, 11:15 AM
- - volcanopele   My money is exogenic. Iapetus is dead. It is dea...   Sep 6 2007, 06:33 PM
|- - JRehling   QUOTE (volcanopele @ Sep 6 2007, 11:33 AM...   Sep 9 2007, 04:04 PM
- - nprev   ... Valid as that really interesting idea is, I...   Sep 6 2007, 07:03 PM
- - The Messenger   endogenic - natural composition of the crust of Ia...   Sep 7 2007, 02:38 AM
|- - ngunn   QUOTE (The Messenger @ Sep 7 2007, 03:38 ...   Sep 7 2007, 11:25 AM
- - nprev   Hmm. Anybody got some quatloos they want to risk? ...   Sep 7 2007, 03:18 AM
- - dvandorn   To the argument that we can't tell if the dark...   Sep 7 2007, 07:04 AM
|- - Gsnorgathon   QUOTE (dvandorn @ Sep 7 2007, 07:04 AM) ....   Sep 7 2007, 10:30 PM
- - nprev   I don't know if Alex has posted this yet, but ...   Sep 7 2007, 03:24 PM
- - nprev   Great question, GS, though I don't think that ...   Sep 7 2007, 11:06 PM
|- - Gsnorgathon   Well, I figured the error bars might be pretty big...   Sep 8 2007, 03:29 AM
||- - nprev   QUOTE (Gsnorgathon @ Sep 7 2007, 08:29 PM...   Sep 8 2007, 03:55 AM
|- - Del Palmer   QUOTE (nprev @ Sep 8 2007, 12:06 AM) 1. W...   Sep 8 2007, 12:02 PM
|- - tty   QUOTE (nprev @ Sep 8 2007, 01:06 AM) What...   Sep 9 2007, 05:43 PM
|- - The Messenger   QUOTE (tty @ Sep 9 2007, 11:43 AM) How ab...   Sep 9 2007, 06:22 PM
- - Big_Gazza   This armchair boffin-wannabee (using the term in i...   Sep 8 2007, 11:10 PM
|- - JRehling   QUOTE (Big_Gazza @ Sep 8 2007, 04:10 PM) ...   Sep 9 2007, 06:50 PM
- - David   Which of Saturn's outer satellites comes close...   Sep 9 2007, 04:31 PM
- - monitorlizard   Those of you who have read Arthur C. Clarke's ...   Sep 10 2007, 04:10 PM
|- - antoniseb   QUOTE (monitorlizard @ Sep 10 2007, 10:10...   Sep 10 2007, 04:13 PM
- - monitorlizard   Please, you're harshing my buzz. Actually, I ...   Sep 10 2007, 04:19 PM

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