Update on Mars' atmosphere, Media briefing on NASA Jan 15th |
Update on Mars' atmosphere, Media briefing on NASA Jan 15th |
Jan 12 2009, 06:01 PM
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
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Jan 12 2009, 10:43 PM
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Senior Member Group: Members Posts: 1585 Joined: 14-October 05 From: Vermont Member No.: 530 |
Isn't the methane emitted from mud volcanoes originally biological in origin, even if it's geological now?
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Jan 12 2009, 11:45 PM
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Isn't the methane emitted from mud volcanoes originally biological in origin, even if it's geological now? Dunno. I always assumed it was from oxidation of iron minerals with H2 reduction of carbonate rocks. (http://en.wikipedia.org/wiki/Serpentinite) [olivine + wa-wa + carbon dioxide --> serpentine + magnetite + methane] (Fe,Mg)2SiO4 + nH2O + CO2 --> Mg3SiO5(OH4) + Fe3O4 + CH4 -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Jan 13 2009, 12:52 AM
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
There's some interesting background on Mars and Methane on Oliver Morton's wonderful blog, Mainly Martian.
The blog is now, alas, largely inactive, but for a year and a half it was a leading source for news of the rovers and unequaled for thoughtful and extremely well informed commentary on the rovers and planetary exploration generally. (Another starting point for the methane discussion is the Two Thousand Cows post.) Mainly Martian is worth reading in chronological order, starting here, and it's a shame that the site doesn't make it easier to do so. It's practically a sequel to Morton's book on Mars, Mapping Mars, itself an outstanding discussion of the state of Mars exploration on the eve of the Rover landings. The book is also a meditation on the experience of visualizing a distant planet, and provides a kind of historical and philosophical background to the activity of umsf.com. TTT |
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