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"Plumes of methane identified on Mars."
Plumes of methane identified on Mars.
Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment, says Atreya. For example, microbes could be living in deep groundwater below a perma-frost zone, and their waste methane could percolate up and leak out. The methane could also come from chemical reactions in which buried volcanic rocks rich in the mineral olivine interact with water. A third possibility is that the methane is escaping from buried clathrates, deposits of methane ice formed long ago by one of the other two mechanisms." http://www.nature.com/news/2008/0810.../4551018a.html This is a major big deal if confirmed. Especially interesting is that high concentrations were found in the area Nili Fossae. A report presented at the "Workshop on Martian Phyllosilicates: Recorders of Aqueous Processes?" this month argues that carbonate best fits the spectra in some deposits in the Nili Fossae region on Mars: PHYLLOSILICATES, ZEOLITES, AND CARBONATE NEAR NILI FOSSAE, MARS: EVIDENCE FOR DISTINCT ENVIRONMENTS OF AQUEOUS ALTERATION. B.L. Ehlmann1, J.F. Mustard1, G.A. Swayze2, J.J. Wray3, O.S. Barnouin- Jha4, J.L. Bishop5, D.J. Des Marais6, F. Poulet7, L.H. Roach1, R.E. Milliken8, R.N. Clark2, S.L. Murchie4, and the MRO CRISM Team. 1Dept. of Geological Sciences, Brown University, 2U.S. Geological Survey, Denver, 3Cornell University, 4JHU-Applied Physics Laboratory 5SETI Institute 6NASA Ames 7IAS, Universit¨¦ Paris-Sud, 8JPL-Caltech ). Martian Phyllosilicates: Recorders of Aqueous Processes (2008). http://www.lpi.usra.edu/meetings/aqu...8/pdf/7019.pdf However, there are some discrepancies from a pure carbonate spectra in the spectra from the deposits in Nili Fossae that prevents the researchers from making a definitive identification. Because of this, they offered some other possible explanations he NEW SECONDARY MINERALS DETECTED BY MRO CRISM AND THEIR GEOLOGIC SETTINGS: KAOLINITE, CHLORITE, ILLITE/MUSCOVITE, AND THE POSSIBILITY OF SERPENTINE OR CARBONATE IN NILI FOSSAE. B.L. Ehlmann1, J.F. Mustard1, J.L. Bishop2, G.A. Swayze3, S.M. Pelkey1, R.N. Clark3, R.E. Milliken4, F. Poulet5, W.M. Calvin6, S.L. Murchie7, L.H. Roach1, J.L. Griffes8 and the MRO CRISM Team. 1Dept. of Geological Sciences, Brown University ), 2SETI Institute 3U.S. Geological Survey, Denver 4JPL-Caltech 5IAS, Universit¨¦ Paris-Sud 6Dept. of Geological Sciences and Engineering, University of Nevada, Reno, 7JHU-Applied Physics Laboratory 8CEPS, Smithsonian Institution. Seventh International Conference on Mars. http://www.lpi.usra.edu/meetings/7th...7/pdf/3270.pdf Most notable in regard to the methane detection in Nili Fossae is that one of the alternative explanations for the deposits is serpentine. Interestingly, serpentine can arise from aqueous alteration of olivine, and olivine was also seen in Nili Fossae in close proximity to these deposits: Serpentinite. "In the presence of carbon dioxide, however, serpentinitization may form either magnesite (MgCO3) or generate methane (CH4). It is thought that some hydrocarbon gases may be produced by serpentinite reactions within the oceanic crust, and the serpentinite reaction is a key argument for the theory of abiogenic petroleum origin. Reaction 2a: Olivine + Water + Carbonic acid ˇú Serpentine + Magnetite + Methane (Fe,Mg)_2SiO_4 + nH_2O + CO_2 ˇú Mg_3Si_2O_5(OH)_4 + Fe_3O_4 + CH_4 or, in balanced form: 18Mg2SiO4 + 6Fe2SiO4 + 26H2O + CO2 ˇú 12Mg3Si2O5(OH)4 + 4Fe3O4 + CH4" http://en.wikipedia.org/wiki/Serpentinite If the methane is being produced continually in this area, this could mean this process requiring liquid water is ongoing on Mars. Bob Clark |
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"Plumes of methane identified on Mars."
"Robert Clark" wrote in message ... Plumes of methane identified on Mars. On Earth those are called "farts". |
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"Plumes of methane identified on Mars."
Robert Clark wrote:
Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment,[snip crap] Bob Clark Hey ****ing stooopid - lunar regolith is 6 ppm methane, not 60 ppb methane. Is the moon alive? Nature 226 251 (1970) Science 171(3970) 474 (1971) idiot -- Uncle Al http://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals) http://www.mazepath.com/uncleal/lajos.htm#a2 |
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"Plumes of methane identified on Mars."
On Oct 23, 12:18 pm, Uncle Al wrote:
Robert Clark wrote: Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment,[snip crap] Bob Clark Hey ****ing stooopid - lunar regolith is 6 ppm methane, not 60 ppb methane. Is the moon alive? Nature 226 251 (1970) Science 171(3970) 474 (1971) idiot -- Uncle Alhttp://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals)http://www.mazepath.com/uncleal/lajos.htm#a2 Our Selene/moon is way more alive than is Mars, and at least our moon has unlimited access to the 1.4 kw/m2 of sunlight, plus having loads of local secondary/recoil IR to boot and perhaps more radioactive material than anyone can appreciate. Inside of Selene could be any number of interesting though low density substances, although the crust and surface seems to be more than good enough as is, with 260 ppm of h2o and otherwise loads of accessible He3 to burn (so to speak). ~ BG |
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"Plumes of methane identified on Mars."
On Oct 23, 8:57 am, Robert Clark wrote:
Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment, says Atreya. For example, microbes could be living in deep groundwater below a perma-frost zone, and their waste methane could percolate up and leak out. The methane could also come from chemical reactions in which buried volcanic rocks rich in the mineral olivine interact with water. A third possibility is that the methane is escaping from buried clathrates, deposits of methane ice formed long ago by one of the other two mechanisms."http://www.nature.com/news/2008/081021/full/4551018a.html This is a major big deal if confirmed. Especially interesting is that high concentrations were found in the area Nili Fossae. A report presented at the "Workshop on Martian Phyllosilicates: Recorders of Aqueous Processes?" this month argues that carbonate best fits the spectra in some deposits in the Nili Fossae region on Mars: PHYLLOSILICATES, ZEOLITES, AND CARBONATE NEAR NILI FOSSAE, MARS: EVIDENCE FOR DISTINCT ENVIRONMENTS OF AQUEOUS ALTERATION. B.L. Ehlmann1, J.F. Mustard1, G.A. Swayze2, J.J. Wray3, O.S. Barnouin- Jha4, J.L. Bishop5, D.J. Des Marais6, F. Poulet7, L.H. Roach1, R.E. Milliken8, R.N. Clark2, S.L. Murchie4, and the MRO CRISM Team. 1Dept. of Geological Sciences, Brown University, 2U.S. Geological Survey, Denver, 3Cornell University, 4JHU-Applied Physics Laboratory 5SETI Institute 6NASA Ames 7IAS, Universit¨¦ Paris-Sud, 8JPL-Caltech ). Martian Phyllosilicates: Recorders of Aqueous Processes (2008).http://www..lpi.usra.edu/meetings/aq...8/pdf/7019.pdf However, there are some discrepancies from a pure carbonate spectra in the spectra from the deposits in Nili Fossae that prevents the researchers from making a definitive identification. Because of this, they offered some other possible explanations he NEW SECONDARY MINERALS DETECTED BY MRO CRISM AND THEIR GEOLOGIC SETTINGS: KAOLINITE, CHLORITE, ILLITE/MUSCOVITE, AND THE POSSIBILITY OF SERPENTINE OR CARBONATE IN NILI FOSSAE. B.L. Ehlmann1, J.F. Mustard1, J.L. Bishop2, G.A. Swayze3, S.M. Pelkey1, R.N. Clark3, R.E. Milliken4, F. Poulet5, W.M. Calvin6, S.L. Murchie7, L.H. Roach1, J.L. Griffes8 and the MRO CRISM Team. 1Dept. of Geological Sciences, Brown University ), 2SETI Institute 3U.S. Geological Survey, Denver 4JPL-Caltech 5IAS, Universit¨¦ Paris-Sud 6Dept. of Geological Sciences and Engineering, University of Nevada, Reno, 7JHU-Applied Physics Laboratory 8CEPS, Smithsonian Institution. Seventh International Conference on Mars.http://www.lpi.usra.edu/meetings/7th...7/pdf/3270.pdf Most notable in regard to the methane detection in Nili Fossae is that one of the alternative explanations for the deposits is serpentine. Interestingly, serpentine can arise from aqueous alteration of olivine, and olivine was also seen in Nili Fossae in close proximity to these deposits: Serpentinite. "In the presence of carbon dioxide, however, serpentinitization may form either magnesite (MgCO3) or generate methane (CH4). It is thought that some hydrocarbon gases may be produced by serpentinite reactions within the oceanic crust, and the serpentinite reaction is a key argument for the theory of abiogenic petroleum origin. Reaction 2a: Olivine + Water + Carbonic acid ˇú Serpentine + Magnetite + Methane (Fe,Mg)_2SiO_4 + nH_2O + CO_2 ˇú Mg_3Si_2O_5(OH)_4 + Fe_3O_4 + CH_4 or, in balanced form: 18Mg2SiO4 + 6Fe2SiO4 + 26H2O + CO2 ˇú 12Mg3Si2O5(OH)4 + 4Fe3O4 + CH4"http://en.wikipedia.org/wiki/Serpentinite If the methane is being produced continually in this area, this could mean this process requiring liquid water is ongoing on Mars. Bob Clark Without ever uncovering one part per billion in h2o within surface processed samples, it seems rather unlikely there's any biological hot spots of organic produced methane that's existing anywhere near the surface. Going deep into the mostly dry-ice frozen crust of Mars will be extremely spendy and perhaps another decade time consuming. Is it ever going to become worth all the tea in China? (I don't think so) ~ BG |
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"Plumes of methane identified on Mars."
On Oct 23, 8:57*am, Robert Clark wrote:
Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment, says Atreya. For example, microbes could be living in deep groundwater below a perma-frost zone, and their waste methane could percolate up and leak out. The methane could also come from chemical reactions in which buried volcanic rocks rich in the mineral olivine interact with water. A third possibility is that the methane is escaping from buried clathrates, deposits of methane ice formed long ago by one of the other two mechanisms."http://www.nature.com/news/2008/081021/full/4551018a.html The default state of carbon in the solar system is methane (CH4). Only hydrogen, helium and water (H2O) exceed methane in abundance. Methane to water ratio is 1:2 http://en.wikipedia.org/wiki/Cosmoch...e_Solar_System Methane still survives in the outer planets because of their distance from the Sun. If Titan were located in the vicinity of Mars, solar radiation would convert water into oxygen, which would burn methane into CO2. Harmon Craig established that methane, released by mid-ocean volcanoes, is abiogenic: http://scrippsnews.ucsd.edu/Releases/?releaseID=550 Abiogenic methane or its combustion product CO2 is characterized by an elevated content of carbon-13. Nilli Fossae may be still releasing volcanic gases. John Curtis |
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"Plumes of methane identified on Mars."
On Oct 24, 10:04*am, John Curtis wrote:
On Oct 23, 8:57*am, Robert Clark wrote: Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment, says Atreya. For example, microbes could be living in deep groundwater below a perma-frost zone, and their waste methane could percolate up and leak out. The methane could also come from chemical reactions in which buried volcanic rocks rich in the mineral olivine interact with water. A third possibility is that the methane is escaping from buried clathrates, deposits of methane ice formed long ago by one of the other two mechanisms."http://www.nature.com/news/2008/081021/full/4551018a.html The default state of carbon in the solar system is methane (CH4). Only hydrogen, helium and water (H2O) exceed methane in abundance. Methane to water ratio is 1:2http://en.wikipedia.org/wiki/Cosmochemical_Periodic_Table_of_the_Elem... Methane still survives in the outer planets because of their distance from the Sun. If Titan were located in the vicinity of Mars, solar radiation would convert water into oxygen, which would burn methane into CO2. Harmon Craig established that methane, released by mid-ocean volcanoes, is abiogenic:http://scrippsnews.ucsd.edu/Releases/?releaseID=550 Abiogenic methane or its combustion product CO2 is characterized by an elevated content of carbon-13. Nilli Fossae may be still releasing volcanic gases. John Curtis Good point about determining if the methane is biogenic or not from the carbon-13 content. I don't think the current Mars orbiters or telescopes from Earth have sufficient sensitivity to determine that but it may be later orbiters or perhaps lander craft at these high methane locations could be given instruments to determine this. - Bob Clark |
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"Plumes of methane identified on Mars."
On Oct 24, 8:55 am, Robert Clark wrote:
On Oct 24, 10:04 am, John Curtis wrote: On Oct 23, 8:57 am, Robert Clark wrote: Plumes of methane identified on Mars. Published online 21 October 2008 | 455, 1018 (2008) | "Whether the methane plumes are biological or geological in origin is impossible to know at the moment, says Atreya. For example, microbes could be living in deep groundwater below a perma-frost zone, and their waste methane could percolate up and leak out. The methane could also come from chemical reactions in which buried volcanic rocks rich in the mineral olivine interact with water. A third possibility is that the methane is escaping from buried clathrates, deposits of methane ice formed long ago by one of the other two mechanisms."http://www.nature.com/news/2008/081021/full/4551018a.html The default state of carbon in the solar system is methane (CH4). Only hydrogen, helium and water (H2O) exceed methane in abundance. Methane to water ratio is 1:2http://en.wikipedia.org/wiki/Cosmochemical_Periodic_Table_of_the_Elem... Methane still survives in the outer planets because of their distance from the Sun. If Titan were located in the vicinity of Mars, solar radiation would convert water into oxygen, which would burn methane into CO2. Harmon Craig established that methane, released by mid-ocean volcanoes, is abiogenic:http://scrippsnews.ucsd.edu/Releases/?releaseID=550 Abiogenic methane or its combustion product CO2 is characterized by an elevated content of carbon-13. Nilli Fossae may be still releasing volcanic gases. John Curtis Good point about determining if the methane is biogenic or not from the carbon-13 content. I don't think the current Mars orbiters or telescopes from Earth have sufficient sensitivity to determine that but it may be later orbiters or perhaps lander craft at these high methane locations could be given instruments to determine this. - Bob Clark The existing mass spectrometer that is on the surface of Mars and supposedly functioning according to spec, has yet to register one part per billion of h2o. It's not looking good on behalf of anything biogenic taking place, unless it's somewhat rad-hard DNA is extra special or beyond weird as to anything we've ever come across. ~ BG |
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