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~1.25 million year old gully flows, Head, Schon "Geology" paper
imipak
post Mar 2 2009, 06:10 PM
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Via Space.com -- there's lots of coverage today of a new paper by Head, Schon (and others?) in "Geology". The headline finding is a claim to have dated four distinct flows down a gully by crater-counting (a nearby crater produced many secondaries, I think.) I've not been able to find an abstract online, let alone full-text, but there's good detail in, e.g., the SciAm piece .

(Quick edit after a more leisurely search) - found this paper by the same authors from European Planetary Science Congress (2008):
http://www.cosis.net/abstracts/EPSC2008/00...8-A-00310-1.pdf


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dvandorn
post Mar 6 2009, 02:44 AM
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Interesting! Although I note that over longer timeframes, he shows five different solution sets based on five different sets of assumptions.

These projections could also be significantly altered if there has been any crustal movement over the projected timeframes (i.e., the Tharsis volcanic pile acting to move the entire crust such that Tharsis' most massive build-up is now sitting over the equator...)

-the other Doug


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Posts in this topic
- imipak   ~1.25 million year old gully flows   Mar 2 2009, 06:10 PM
- - mars2012   The Geology paper is here (access required for ful...   Mar 4 2009, 10:24 PM
- - dvandorn   I'd enjoy seeing the rationale by which a give...   Mar 5 2009, 03:13 AM
|- - Fran Ontanaya   QUOTE (dvandorn @ Mar 5 2009, 04:13 AM) T...   Mar 5 2009, 03:50 PM
||- - algorimancer   QUOTE (Fran Ontanaya @ Mar 5 2009, 09:50 ...   Mar 5 2009, 07:27 PM
|- - imipak   QUOTE (dvandorn @ Mar 5 2009, 03:13 AM) I...   Mar 5 2009, 08:37 PM
|- - mars2012   QUOTE (dvandorn @ Mar 4 2009, 10:13 PM) I...   Mar 5 2009, 11:27 PM
- - dvandorn   Interesting! Although I note that over longer...   Mar 6 2009, 02:44 AM
- - ArMaP   Does anyone know which photo was used for illustra...   Mar 6 2009, 10:04 PM
- - imipak   It's PSP_002293_1450 .   Mar 7 2009, 02:32 PM

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