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Gully formation by dry debris?, Pelletier:"Recent bright gully deposits on Mars: Wet or dry flow?&
imipak
post Mar 1 2008, 05:18 PM
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New work (Pelletier, McEwen, Kolb and Kirk; 'Geology', March 2008) apparently suggests dry debris is a more likely candidate for producing gullies of the sort observed by HiRISE.

This seems to me a more naturally "Occam-friendly" explanation than convoluted scenarios involving frozen aquifers with ice plugs that burst from time to time. What do the experts make of it?


(Edit: sorry for the mangled topic title, BTW; I'd blame the software tools, but I know what that'd make me smile.gif )


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Posts in this topic
- imipak   Gully formation by dry debris?   Mar 1 2008, 05:18 PM
- - nprev   Sounds plausible, but the trigger mechanism for su...   Mar 1 2008, 05:35 PM
- - JonClarke   QUOTE (imipak @ Mar 1 2008, 05:18 PM) New...   Mar 2 2008, 06:03 AM
|- - djellison   QUOTE (JonClarke @ Mar 2 2008, 06:03 AM) ...   Mar 2 2008, 08:33 AM
|- - JonClarke   QUOTE (djellison @ Mar 2 2008, 09:33 AM) ...   Mar 2 2008, 09:57 AM
- - djellison   So 'it looks like' then - and to be fair, ...   Mar 2 2008, 10:39 AM
|- - mcaplinger   QUOTE (djellison @ Mar 2 2008, 02:39 AM) ...   Mar 2 2008, 03:48 PM
|- - JonClarke   QUOTE (djellison @ Mar 2 2008, 10:39 AM) ...   Mar 2 2008, 09:07 PM
|- - djellison   QUOTE (JonClarke @ Mar 2 2008, 09:07 PM) ...   Mar 2 2008, 10:16 PM
|- - mcaplinger   QUOTE (djellison @ Mar 2 2008, 02:16 PM) ...   Mar 3 2008, 04:33 AM
|- - ElkGroveDan   QUOTE (mcaplinger @ Mar 2 2008, 08:33 PM)...   Mar 3 2008, 04:58 AM
- - nprev   If there is in fact water involved here; I would t...   Mar 3 2008, 02:57 AM
- - Stephen   Realistically, barring some serendipitious snapsho...   Mar 3 2008, 08:04 AM
- - dburt   QUOTE (imipak @ Mar 1 2008, 10:18 AM) New...   Mar 3 2008, 09:14 PM
|- - centsworth_II   QUOTE (dburt @ Mar 3 2008, 04:14 PM) Good...   Mar 4 2008, 07:41 AM
- - imipak   Thanks everyone, I thought there'd be some int...   Mar 4 2008, 11:36 AM
|- - jamescanvin   QUOTE (imipak @ Mar 4 2008, 11:36 AM) On ...   Mar 4 2008, 01:09 PM
||- - imipak   QUOTE (jamescanvin @ Mar 4 2008, 01:09 PM...   Mar 4 2008, 09:03 PM
|- - SickNick   QUOTE (imipak @ Mar 4 2008, 09:36 PM) Tha...   Jun 8 2008, 10:02 AM
- - Juramike   space.com article references recent PNAS article. ...   Aug 26 2008, 03:51 AM
- - marsbug   As important as the question of water on present d...   Aug 26 2008, 09:41 AM
|- - Juramike   (no offense taken...) I'm sure the pendulum o...   Aug 26 2008, 12:10 PM
|- - stevesliva   QUOTE (Juramike @ Aug 26 2008, 08:10 AM) ...   Aug 26 2008, 05:23 PM
- - marsbug   Personally ( and probably this is a bit weasel of ...   Aug 26 2008, 08:19 PM
- - Juramike   Head et al. PNAS (2008) Early edition (August 25, ...   Aug 26 2008, 09:58 PM

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