[meteorite-list] Perth meteorite
From: Tomk <tomk_at_meteoritecentral.com>
Date: Sat, 6 Mar 2010 14:05:20 +1100 Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAEG1VozY5HVEqthCFNdFxgfCgAAAEAAAAAwLoq/hQPlOhqFMFqpIraUBAAAAAA==_at_crystal-world.com> If W.A. museum claims ownership of the meteorite ,does that mean they will be liable for the damage it causes ? Tom Kapitany B.Sc. Geology/Botany Managing Director Crystal World & Prehistoric Journeys Australian Mineral Mines Pty. Ltd. 13 Olive Rd Devon Meadows 3977 Victoria Australia . Phone: (61-3) 59982493 Fax: (61-3) 59982685 Email: tomk at crystal-world.com Web: www.crystal-world.com www.collectorscorner.com.au -----Original Message----- From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of meteorite-list-request at meteoritecentral.com Sent: Saturday, 6 March 2010 1:16 PM To: meteorite-list at meteoritecentral.com Subject: Meteorite-list Digest, Vol 79, Issue 21 Send Meteorite-list mailing list submissions to meteorite-list at meteoritecentral.com To subscribe or unsubscribe via the World Wide Web, visit http://six.pairlist.net/mailman/listinfo/meteorite-list or, via email, send a message with subject or body 'help' to meteorite-list-request at meteoritecentral.com You can reach the person managing the list at meteorite-list-owner at meteoritecentral.com When replying, please edit your Subject line so it is more specific than "Re: Contents of Meteorite-list digest..." Today's Topics: 1. Perth Hammer? (Meteorites USA) 2. Fwd: METEORITES STOLEN IN JAPAN (Darryl Pitt) 3. Odd Stone (Meteorites USA) 4. Matt Morgan, where are you? (valparint at aol.com) 5. Cuddeback Dry Lake in California (GeoZay at aol.com) 6. Mars Express: Phobos Flyby Success (Ron Baalke) 7. Re: Odd Stone - Update (Meteorites USA) 8. Mars Exploration Rovers Update: February 24 - March 3, 2010 (Ron Baalke) 9. Re: Clue to Antarctica Space Blast (Sterling K. Webb) 10. Hole new theory on life (Greg Stanley) 11. Re: Odd Stone - Update (and another similar oddball) (Galactic Stone & Ironworks) 12. Meteorites and Humidity: Some Questions . . . (gracie) ---------------------------------------------------------------------- Message: 1 Date: Fri, 05 Mar 2010 09:01:46 -0800 From: Meteorites USA <eric at meteoritesusa.com> Subject: [meteorite-list] Perth Hammer? To: Meteorite-list <meteorite-list at meteoritecentral.com> Message-ID: <4B9138FA.7060304 at meteoritesusa.com> Content-Type: text/plain; charset=windows-1252; format=flowed Looks like we may have another. -------------------------------------------------------- ARTICLE: Museum investigates meteorite claims Glenn Cordingley From: PerthNow March 05, 2010 2:58PM SOURCE: http://www.perthnow.com.au/news/special-features/museum-investigates-meteori te-claims/story-e6frg1ac-1225837470139 WA Museum curators will investigate claims a meteorite crashed into a home of a north-eastern suburb in Perth. A museum spokesman said a woman had claimed a meteorite hit her Beechboro home last night. ?All we know is a house has been hit by a suspected meteorite but we have not had a chance to verify this,? a museum spokesman said. ?We are trying to get it over to the museum for one of our scientists to have a look at but at this stage we do not know if it?s a rock or a meteorite.? Email us: Send us your meteorite pictures Perth Observatory said it had received a ?couple of reports? last night from people phoning to say they had seen a light in the sky. ?At this stage no one seems to be able to put it all together, but if it was a meteor it belongs to the WA Government, observatory astronomer Ralph Martyn said. ?The reports at this stage are very sketchy.? He said the observatory was waiting to inspect a photograph of the object. ?A lot of people find slag out of glass furnaces and think they are meteorites as well, they kind of look the same.? -------------------------------------------------------- Have our friends in Australia heard anything more on this one? Regards, Eric Wichman Meteorites USA ------------------------------ Message: 2 Date: Fri, 5 Mar 2010 12:09:08 -0500 From: Darryl Pitt <darryl at dof3.com> Subject: [meteorite-list] Fwd: METEORITES STOLEN IN JAPAN To: Meteorite List <meteorite-list at meteoritecentral.com> Cc: drtanuki <drtanuki at yahoo.com>, Hiroko Nagahara <vice at meteoriticalsociety.org> Message-ID: <116117F3-B84D-43F3-BEDB-B89D7C8D5CEC at dof3.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes I've just received a couple of emails inquiring about the Meteoritical Society's vice department as implied by the email "vice at meteoritesociety.org " There is no such department. While wondering who to contact at the Society I happened to notice the vice-president of the Society is Japanese and that's her email. ;-) Begin forwarded message: > From: Darryl Pitt <darryl at dof3.com> > Date: March 5, 2010 11:30:02 AM EST > To: Meteorite List <meteorite-list at meteoritecentral.com> > Cc: drtanuki <drtanuki at yahoo.com>, Hiroko Nagahara <vice at meteoriticalsociety.org > > > Subject: [meteorite-list] METEORITES STOLEN IN JAPAN > > > > For Japanese and Japanese-speaking List Members in particular: > > It pains me to write the following, but I do so at the request of > dear friends Akiko Umai and Gene Oshima who run TIMA---the Tokyo > International Mineral Association---and the "Tokyo Show" of early > summer. > > Shoichi Saito is a Japanese meteorite dealer who had a little nook > in the TIMA offices at the Century Hyatt from which he transacted > business the last few years---primarily consignment pieces. As the > generous spirit he is, Gene subsidized Saito, whose business fell > into decline. I am now advised Saito and the entire inventory of > meteorites---including many specimens from Gene's personal > collection---have disappeared. > > I was just asked to contact the Meteoritical Society as my friends > were hopeful that Saito's membership in the Society might prompt > some type of intervention. More realistically, I am awaiting the > names of the missing meteorites. > > ______________________________________________ > Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list ------------------------------ Message: 3 Date: Fri, 05 Mar 2010 12:01:18 -0800 From: Meteorites USA <eric at meteoritesusa.com> Subject: [meteorite-list] Odd Stone To: Meteorite-list <meteorite-list at meteoritecentral.com> Message-ID: <4B91630E.3080803 at meteoritesusa.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Visible "metal" flecks, slight magnetism, odd inclusions. Olivine? http://www.meteoritesusa.com/odd-stones/ Any ideas? Opinions are appreciated. Regards, Eric Wichman ------------------------------ Message: 4 Date: Fri, 5 Mar 2010 13:12:24 -0700 From: <valparint at aol.com> Subject: [meteorite-list] Matt Morgan, where are you? To: <meteorite-list at meteoritecentral.com> Message-ID: <55D190EA5DE34ABB9827BCAE1B280AE2 at vpoffsiteweb.local> Content-Type: text/plain Matt, Seems your web site is inaccessible because the URL registration expired. Please contact me about my recent request. (www.valparint.com) Thanks. Paul Swartz ------------------------------ Message: 5 Date: Fri, 5 Mar 2010 15:52:53 EST From: GeoZay at aol.com Subject: [meteorite-list] Cuddeback Dry Lake in California To: meteorite-list at meteoritecentral.com Message-ID: <22749.353ecc29.38c2c925 at aol.com> Content-Type: text/plain; charset="US-ASCII" I'm trying to find a place to do my first meteorite hunt and I've been thinking about perhaps trying Cuddeback Dry Lake in California near Randsburg along highway 395. While searching various websites, I see that Bob Verish has found a meteorite there in 2000. So I guess it has potential. What makes me a little nervous is the various military bomb ranges in the area. On one map, I noticed a big circle to the north west of the lake designating a bombing training area. Does anyone know if any of these bomb training sites extends into the dry lake itself? My next concern is getting to the lake, its about 7 miles from highway 395 starting at a spot called Atolia. Does anyone know if this road is marked from Atolia and whether it is a good enuf road to make your way to the dry lake? Also does anyone know if the dry lake and the area leading up to it is BLM land? I presume its okay to camp once I'm beyond Atolia, but not sure. The maps I have access to don't show much detail...sure would like to see a Topo map for the region. Any suggestions would be appreciated. GeoZay ------------------------------ Message: 6 Date: Fri, 5 Mar 2010 13:34:36 -0800 (PST) From: Ron Baalke <baalke at zagami.jpl.nasa.gov> Subject: [meteorite-list] Mars Express: Phobos Flyby Success To: meteorite-list at meteoritecentral.com (Meteorite Mailing List) Message-ID: <201003052134.o25LYaLP007600 at zagami.jpl.nasa.gov> Content-Type: text/plain; charset=iso-8859-1 http://www.esa.int/SPECIALS/Mars_Express/SEMIPX6K56G_0.html Phobos Flyby Success European Space Agency 4 March 2010 Mars Express encountered Phobos last night, smoothly skimming past at just 67 km, the closest any manmade object has ever approached Mars' enigmatic moon. The data collected could help unlock the origin of not just Phobos but other "second generation" moons. Something is not right about Phobos. It looks like a solid object but previous flybys have shown that it is not dense enough to be solid all the way through. Instead, it must be 25-35% porous. This has led planetary scientists to believe that it is little more than a "rubble pile" circling Mars. Such a rubble pile would be composed of blocks both large and small resting together, with possibly large spaces between them where they do not fit easily together. Last night's flyby was close enough to give scientists their most exquisite data yet about the gravitational field of Phobos. Mars Express locked onto the radio signal from Earth at around 21:20 CET (20:20 UT). The radio frequency oscillators on the ground are 100 000 times more stable than those on the spacecraft, so for this experiment, which required the best precision possible, the signal was sent up to Mars Express and then returned by the spacecraft to the ground. The radio waves travel at the speed of light and took 6 minutes 34 seconds to travel from Earth to the spacecraft last night. So the round trip time was 13 minutes 8 seconds. Once the signal was received back at Earth, it was clearly strong and good. So strong that radio amateurs were also able to lock onto the signal, although their equipment would not be able to detect the subtle variations induced by the gravity of Phobos. Now that the data are all collected, the analysis can begin.First will be an estimate of the density variation across the moon. This will tell scientists just how much of Phobos' interior is likely to be composed of voids. "Phobos is probably a second-generation Solar System object," says Martin P??tzold, Universitat Koln, Cologne, Germany, and Principal Investigator of the Mars Radio Science (MaRS) experiment. Second generation means that it coalesced in orbit after Mars formed, rather than forming concurrently out of the same birth cloud as the Red Planet. There are other moons around other planets where this is thought to have been the case too, such as Amalthea around Jupiter. Whatever the precise origin, Phobos will eventually crumble back into this disrupted state. It is gradually spiralling towards Mars and will eventually be pulled apart. "It came from debris, it will return to debris," says P??tzold. In the meantime, it is there to be studied and explored. Last night's flyby was just one of a campaign of 12 Mars Express flybys taking place in February and March 2010. For the previous two, the radar was working, attempting to probe beneath the surface of the moon, looking for reflections from structures inside. In the coming flybys, the Mars Express camera will take over, providing high resolution pictures of the moon's surface. More information Updates as the flybys continue will be posted on the Mars Express blog <http://webservices.esa.int/blog/blog/7>. Contacts for editors: Martin Patzold Principal Investigator of the Mars Radio Science (MaRS) experiment Universitat Koln, Germany Email: mpaetzol at uni-koeln.de Olivier Witasse ESA Project Scientist Mars Express ESTEC, The Netherlands Email: owitasse at rssd.esa.int ------------------------------ Message: 7 Date: Fri, 05 Mar 2010 13:53:49 -0800 From: Meteorites USA <eric at meteoritesusa.com> Subject: Re: [meteorite-list] Odd Stone - Update To: meteorite-list at meteoritecentral.com Message-ID: <4B917D6D.2060805 at meteoritesusa.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Higher resolution images of Stone #1 has been uploaded to the page: Exterior - http://www.meteoritesusa.com/images/odd-stone-1-hires.jpg Interior - http://www.meteoritesusa.com/images/odd-stone-1a-hires.jpg Metal? - http://www.meteoritesusa.com/images/odd-stone-1b-hires.jpg I've also added Stone #2 to the page as well: Scroll down the page for photos of this meteorite. Stone #2 is no doubt a meteorite, but the type I'm not sure of. Nice crust, and gorgeous light interior with big dark clasts. http://www.meteoritesusa.com/odd-stones/ Thought and opinions are welcome and appreciated on both stones. Thanks to those who have provided private opinions thus far. Regards, Eric Wichman Meteorites USA On 3/5/2010 12:01 PM, Meteorites USA wrote: > Visible "metal" flecks, slight magnetism, odd inclusions. Olivine? > http://www.meteoritesusa.com/odd-stones/ > > Any ideas? Opinions are appreciated. > > Regards, > Eric Wichman > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > ------------------------------ Message: 8 Date: Fri, 5 Mar 2010 14:26:18 -0800 (PST) From: Ron Baalke <baalke at zagami.jpl.nasa.gov> Subject: [meteorite-list] Mars Exploration Rovers Update: February 24 - March 3, 2010 To: meteorite-list at meteoritecentral.com (Meteorite Mailing List) Message-ID: <201003052226.o25MQIIU011621 at zagami.jpl.nasa.gov> Content-Type: text/plain; charset=iso-8859-1 http://marsrovers.jpl.nasa.gov/mission/status.html SPIRIT UPDATE: Winter Preparations Nearly Complete - sols 2185-2191, February 24 - March 02, 2010: Spirit is in her winter position, still embedded in the area called "Troy" on the west side of Home Plate. Efforts are nearing completion to prepare the rover for winter. Because of the low power levels, multi-sol plans are being developed with reduced communication activity to save energy. Only one or two planning cycles occur each week. These plans have a single uplink to the rover and few Ultra-High Frequency (UHF) downlinks to return the data. The new long-range UHF communication table is onboard and various settings for winter are being finalized. As of Sol 2191 (March 2, 2010), the rover solar array energy production was to 153 watt-hours with an atmospheric opacity (tau) of 0.331 and a dust factor of 0.510. Total odometry is unchanged at 7,730.50 meters (4.80 miles). ------------------------------------------------------------------------ OPPORTUNITY UPDATE: Driving Around Material Ejected From Young Crater - sols 2166-2171, February 26 - March 03, 2010: Opportunity is continuing the circumnavigation of "Concepci?n" crater. During this period Opportunity traversed around a ray of ejecta that is comprised of rock debris from the impact that formed the crater. In Mars Reconnaissance Orbiter images these rocks and their shadows appear as dark streaks extending to the south and southwest from Concepci?n crater. Data collected on Sols 2165 (Feb. 25, 2010) and 2166 (Feb. 26, 2010), indicated potential targets for direct measurements with the Instrument Deployment Device (IDD). A 22-meter (72-foot) drive along the ejecta ray was performed on Sol 2167 (Feb. 27, 2010). However, because of the assessed mobility risks associated with this part of the jumbled rock field, no in-situ targets were approached. Instead the rover continued the circumnavigation campaign with an 18-meter (59-foot) drive around the ejecta ray on Sol 2171 (March 3, 2010). As of Sol 2171 (March 3, 2010), the solar array energy production was 278 watt-hours with an atmospheric opacity (tau) of 0.396 and a dust factor of 0.481. Total odometry is 19,399.57 meters (12 miles). ------------------------------ Message: 9 Date: Fri, 5 Mar 2010 16:49:17 -0600 From: "Sterling K. Webb" <sterling_k_webb at sbcglobal.net> Subject: Re: [meteorite-list] Clue to Antarctica Space Blast To: "Meteorite List" <meteorite-list at meteoritecentral.com> Cc: Paul Heinrich <oxytropidoceras at cox.net> Message-ID: <09EE4FC09A584EB8A4ECB308F71FBBA6 at ATARIENGINE2> Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Hi, Paul, Greg, List In February, 2006, SWRI published this paper in Science announcing the discovery of an new recent asteroid family associated with the asteroid 1270 Datura: http://www.boulder.swri.edu/~bottke/Reprints/Nesvorny_Vok_Bottke_Science_200 6_Datura_breakup.pdf A summary of its conclusions: "The newly identified family is a group of six 1- to 2.5-km-diameter asteroids, whose orbits are very tightly clustered near the inner main belt of the ~10-km-diameter object 1270 Datura... The result (of hundreds of numerical simulations) shows that the Datura cluster is 450 +/- 50 thousand years (ky) old (Fig. 1), considerably younger than other known asteroid families... We estimate that the disrupted parent body was ~15 km in diameter. Apparently, a substantial fraction of the parent body's mass was ejected to space as fragments ranging in size down to micrometer-sized dust particles. The production of these particles implies that the Datura cluster may be a source of some of the material in the circumsolar (zodiacal) dust cloud... We estimate that micrometer-sized Datura particles migrate by radiation effects from 2.235 AU to 1 AU in only ~2000 years. Therefore, a wave of micrometer-sized Datura particles may have reached Earth only a few thousand years after the formation of the Datura cluster. Signs of this event may be found by analyzing tracers of extraterrestrial dust in deep ocean sediments and Antarctic ice cores." I wonder if these researchers were following up on that last suggestion? At any rate, the minimum amount of dust found in these separated cores would require (they say) 3,000,000,000 kg of dust to reach the ice surface. The characteristics of the dust show it was not blown in, but was deposited at one time from above. This amount of dust is 100 times greater than the "normal" annual cosmic dustfall for the entire planet. This is too much to be accounted for by dust bands drifting in from the orbits of the Datura family. No, it would require a "chunk" to be delivered all at once. The impactor would have to be bigger than this minimum amount of 3 million tons. To account for this amount of dust would require a sphere of silicate about 130-135 meters in diameter. If the dust is found further afield in Antarctica or if not all of the body reached the ground as dust (it never does), you are probably talking about an impactor at least a quarter-kilometer in diameter. As an illustration of this problem, everyone seems to agree that Tunguska was an airburst of an object that had to weight at least 50,000 or 100,000 tons, and yet no convincing traces of the "impactor" can be demonstrated. This suggests that if three million tons of Datura-type dust reached the ice surface, the "impactor" could have been much, much larger than three million tons. Interestingly, ALL the news stories are ignoring the most amazing part of this story. There are TWO dust layers BOTH found 2000-3000 km apart. One is at 481,000 years ago and the other is at 434,000 years ago. Both produced big traces at both locations. So, we are talking about TWO big impactors in less than 50,000 years. One of the questions worth asking when talking about recent big impactors is "Anymore at home like you?" If, as Bottke says, the parent body was about 15 km and we have a 10 km body and six 1- to 2.5-km-diameter asteroids surviving from its breakup, they account for only 40% of the parent body. 60% of the original body is unaccounted for. Did all 60% get turned into dust? Or are there some undetected sub-kilometer bodies left over? 60% of that parent body is enough to make up 16,000 500-meter bodies. Even if 90% was turned to dust, that leaves 10% or enough for 1600 500-meter bodies. 1600 such bodies is more than enough potential impactors. So is 1% or 160 500-meter bodies. Of course, in the real world there is a variety of sizes created by a collision, but there seems to plenty of rocks to go around. Two massive airbursts over Antarctica in 47,000 years is pushing at the limits of shrugging things off as random chance. Antarctica is a mere 2.5% of the Earth's land surface. If two such bodies fell on it in a short window of time, we are dealing with a "shower." Shouldn't random chance suggest 40 times as many impacts for the rest of the Earth in that same 47,000 years? Has anyone gone into the freezer and pulled the old Greenland ice cores for 400 to 500 kyears ago? Can this type of analysis be performed on Greenland cores? They appear to only go back 500,000 years, are less complete at this age, and Greenland has only 14% of the area of Antarctica. I can't find any studies that show cosmic dust in the ice at that age (or that looked for it). The discovery of a fresh asteroid family has generated spectral studies of their surfaces, mostly to gauge the degree of "space weathering." Here's the result of optical spectroscopy using the large Gemini telescopes: http://www.gemini.edu/node/11082 They say: "Optical spectroscopy from the Gemini telescopes has revealed a relatively uncommon type of asteroid in the main-belt for the first time... They found that spectra of asteroids in the newly discovered Datura family have a deep absorption feature near 0.8 microns which classifies them as ?Q-type? asteroids. This spectral feature is produced by silicate material, in particular olivine and pyroxene. Most interestingly, the spectra of Q-type objects are well-matched to the most common type of meteorite found on Earth called an ordinary chondrite (OC)." The full paper on the spectra is available at: http://adsabs.harvard.edu/abs/2008A%26A...486L...9M OC's are only "ordinary" because they're common in this geological era. 75% of all current falls are OC's. There is a logic to the suggestion that geologically recent falls come from the most recent asteroidal breakups. Are today's ordinary chondrites common because they all came from the youngest families like Datura? Some think so. (The Datura spectra is an almost perfect match for the OC FAYETTEVILLE): http://www.sciencedaily.com/releases/2008/07/080710103903.htm This odd because Fayetteville is a breccia of two very different materials, and there is lots of argument about it. Perhaps it dates from the breakup and one of the materials is that of the disrupting body and the other is from the Datura family parent body (or Datura itself). Nobody knows (yet). It all makes me wonder if there is any other evidence of numerous impacts elsewhere on Earth between 400,000 and 500,000 years ago? Sterling K. Webb ---------------------------------------------------------------------------- --- ----- Original Message ----- From: "Paul Heinrich" <oxytropidoceras at cox.net> To: "Meteorite List" <meteorite-list at meteoritecentral.com> Sent: Wednesday, March 03, 2010 9:57 PM Subject: [meteorite-list] Clue to Antarctica Space Blast Greg wrote: ?Interesting http://news.bbc.co.uk/2/hi/science/nature/8547534.stm Clues to Antarctica space blast By Paul Rincon Science reporter, BBC News, The Woodlands, Texas? The paper is: Engrand, C. B. Narcisi, J. r. Petit, E. Dobrica, and J. Duprat, 2010, Isotopes of EPICA ? Dome C Extraterrestrial Dust Layers: Constraints on the Nature of the Impactors. 41st Lunar and Planetary Science Conference, held March 1-5, 2010 in The Woodlands, Texas. LPI Contribution No. 1533, p.1981 http://www.lpi.usra.edu/meetings/lpsc2010/pdf/1981.pdf http://adsabs.harvard.edu/abs/2010LPI....41.1981E Related papers are: 1. Misawa, K., M. Kohno, T. Tomiyama, T. Noguchi, T. Nakamura, K. Nagao, T.Mikouchi, and K. Nishiizumi, 2010, Two extraterrestrial dust horizons found in the Dome Fuji ice core, East Antarctica. Earth and Planetary Science Letters. vol. 289, no. 1-2, pp. 287-297. http://dx.doi.org/10.1016/j.epsl.2009.11.016 http://www.ssl.berkeley.edu/cosmochem/publications.html The PDF for the above paper can be downloaded from the link for this paper at: http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%23580 1%232010%23997109998%231578540%23FLA%23&_cdi=5801&_pubType=J&view=c&_auth=y& _acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=0377f75ed4c6eabaca0 119b87f30f76c 2. Narcisi, B., J. Robert Petit, and B. Delmonte, nd, Extended East Antarctic ice-core tephrostratigraphy Quaternary Science Reviews, Article in Press, Corrected Proof http://dx.doi.org/10.1016/j.quascirev.2009.07.009 3. Narcisi, B., J. R. Petit, and C. Engrand, 2007, First discovery of meteoritic events in deep Antarctic (EPICA-Dome C) ice cores. de la Recherche Scientifique & Universit? Paris Sud, Orsay, France) Geophysical Research Letters. vol. 34, no. 15, CiteID L1550 http://adsabs.harvard.edu/abs/2007GeoRL..3415502N http://www.agu.org/pubs/crossref/2007/2007GL030801.shtml A summary paper about the icecores: Wolff, E. W., C. Barbante. S. Becagli, and many, many others, 2010, Changes in environment over the last 800,000 years from chemical analysis. Quaternary Science Reviews. vol. 29, pp. 285?295. http://www.climate.unibe.ch/~stocker/papers/wolff10qsr.pdf http://www.climate.unibe.ch/~stocker/publications10.html Yours, Paul H. ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list at meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list ------------------------------ Message: 10 Date: Fri, 5 Mar 2010 15:22:22 -0800 From: Greg Stanley <stanleygregr at hotmail.com> Subject: [meteorite-list] Hole new theory on life To: <meteorite-list at meteoritecentral.com> Message-ID: <SNT117-W13D91BECAF2EE8894CE09BD2380 at phx.gbl> Content-Type: text/plain; charset="iso-8859-1" Just an amazing picture. Nice artical too. Greg S. http://www.nationalpost.com/news/canada/story.html?id=2644178 Microbes found in Arctic meteor crater could help point to life on Mars Randy Boswell, Canwest News Service? Published: Friday, March 05, 2010 Related Topics Oceanographer Dale Stokes surveys the Haughton Crater on Devon Island in Canada's Arctic. Ed Struzik, Canwest News Service Files Oceanographer Dale Stokes surveys the Haughton Crater on Devon Island in Canada's Arctic. Scientists studying an ancient meteorite crash site in the Canadian Arctic have detected traces of microbes that point to the key role played by impact craters in the evolution of life on Earth and could help determine whether life once existed on Mars. The discovery -- hailed by an 11-member team of researchers from Canada, Britain, the United States and Sweden as a scientific "first" -- was made at Devon Island's Haughton Crater, a uniquely dry and desolate geological gem probed frequently by experts from NASA because of its Mars-like features. "Meteorite impact craters have been proposed as possible sites to find microbial life on Mars, as they are a focus for heat and water circulation," says the research team, including University of Western Ontario geologist Gordon Osinski. The researchers examined meteorite-shocked rocks from numerous sites throughout the 24-kilometrewide crater and found telltale traces of sulphur left behind by heat-loving, "thermophilic" bacteria that moved into the crash site after the impact. "Evidence of widespread microbial activity" in the Canadian crater, the team says, has "shown for the first time that a crater was pervasively colonized by microbes, and that colonization of over 20 cubic kilometres of impact rock was rapid, within 10,000 years after impact, while the rock was still warm." The team concludes: "This emphasizes the potential of impact craters in the evolution of early life on Earth, and the search for life on other planets." Several of the researchers, including team leader John Parnell of the University of Aberdeen, have made previous findings at the Haughton Crater, highlighting its value in the search for extraterrestrial life as well as in detecting signs of tiny, primordial organisms from the dawn of Earth history. In 2005, a Parnell-led study at the Nunavut site yielded proof that billion-year-old "biomarkers" -- faint chemical traces of organic matter -- had survived the massive meteor strike that created the Haughton crater 23 million years ago. The latest project has yielded proof that the space rock that struck Devon Island created warm, protective niches for microscopic organisms, allowing them to flourish -- and leave fossilized signatures of their activity --at the impact site. The remoteness and "polar desert" environment of Devon Island means the crater has undergone much less change than other impact sites around the world, making it one of the best places on Earth to study a simulated Martian landscape. Spacecraft that have probed Mars in recent years have fuelled a belief among experts the planet once had water and supported rudimentary forms of life. Scientists seeking signs of extraterrestrial life are increasingly focused on developing techniques to detect infinitesimally small organisms, fossilized remnants of microbes or merely the faint traces of the biochemical building blocks needed as a base for life's primordial soup. In 2004, British scientist Charles Cockell described Devon Island as one of the Earth's best remaining examples of "the sort of habitat that would have given rise to life on Earth." And based on his studies of the Haughton Crater, Mr. Cockell stated at the time such impact sites offer a warm, hospitable habitat for bacteria and algae, and also for the "pre-biotic" proteins that had to come together for that first spark of life on Earth. Read more: http://www.nationalpost.com/news/canada/story.html?id=2644178#ixzz0hLbjvqJ8 The National Post is now on Facebook. Join our fan community today. _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/201469228/direct/01/ ------------------------------ Message: 11 Date: Fri, 5 Mar 2010 20:16:04 -0500 From: "Galactic Stone & Ironworks" <meteoritemike at gmail.com> Subject: Re: [meteorite-list] Odd Stone - Update (and another similar oddball) To: Meteorites USA <eric at meteoritesusa.com> Cc: meteorite-list at meteoritecentral.com Message-ID: <e51421551003051716i5028e775w974a50987379a29f at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi Eric and List, Your stone reminds me of one that I have had for a while. It exhibits very weak attraction to a magnet, and it looked like a weathered OC on the outside with typical windpolished desert varnish and lack of crust. When I windowed it, I say a mottled grey matrix with no visible chondrules. There are dark grey areas set in a lighter grey matrix. There is some visible oxidation on the cut face where there is presumably some metal, although I can't see it easily. This pieces weighs 14 grams. I am guessing it might be some kind of L6 or LL6, although it would be great if it was an achondrite. http://i268.photobucket.com/albums/jj24/Meteoritethrower/odd-2.jpg http://i268.photobucket.com/albums/jj24/Meteoritethrower/odd-3.jpg http://i268.photobucket.com/albums/jj24/Meteoritethrower/odd-1.jpg Best regards, MikeG On 3/5/10, Meteorites USA <eric at meteoritesusa.com> wrote: > Higher resolution images of Stone #1 has been uploaded to the page: > Exterior - http://www.meteoritesusa.com/images/odd-stone-1-hires.jpg > Interior - http://www.meteoritesusa.com/images/odd-stone-1a-hires.jpg > Metal? - http://www.meteoritesusa.com/images/odd-stone-1b-hires.jpg > > I've also added Stone #2 to the page as well: Scroll down the page for > photos of this meteorite. Stone #2 is no doubt a meteorite, but the type > I'm not sure of. Nice crust, and gorgeous light interior with big dark > clasts. > http://www.meteoritesusa.com/odd-stones/ > > Thought and opinions are welcome and appreciated on both stones. > > Thanks to those who have provided private opinions thus far. > > Regards, > Eric Wichman > Meteorites USA > > > On 3/5/2010 12:01 PM, Meteorites USA wrote: >> Visible "metal" flecks, slight magnetism, odd inclusions. Olivine? >> http://www.meteoritesusa.com/odd-stones/ >> >> Any ideas? Opinions are appreciated. >> >> Regards, >> Eric Wichman >> ______________________________________________ >> Visit the Archives at >> http://www.meteoritecentral.com/mailing-list-archives.html >> Meteorite-list mailing list >> Meteorite-list at meteoritecentral.com >> http://six.pairlist.net/mailman/listinfo/meteorite-list >> > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > -- ------------------------------------------------------------ Mike Gilmer - Galactic Stone & Ironworks Meteorites http://www.galactic-stone.com http://www.facebook.com/galacticstone ------------------------------------------------------------ ------------------------------ Message: 12 Date: Fri, 5 Mar 2010 20:41:13 -0500 From: "gracie" <gracie at sheverb.com> Subject: [meteorite-list] Meteorites and Humidity: Some Questions . . . To: "MeteorList" <meteorite-list at meteoritecentral.com> Message-ID: <94b161bd003540c9214e3ca67a410410.squirrel at www.sheverb.com> Content-Type: text/plain;charset=iso-8859-1 Hello Met List! Quick background info: About six or eight months ago, I began a meteorite collection. (I am so completely hooked.) I store them primarily in Riker boxes and some in the jewel cases they arrived in. I live in north central Florida and except for my air conditioned home, I don't have the meteorites in any other climate controlled container or cabinet. I'm noticing a few of the irons (Miles especially) and one or two of the stony irons to appear a little rustier than when they arrived. I've read the good information here (http://www.meteoritemarket.com/preserv.htm), but still have some questions. Given my location, is it unreasonable for me to expect that simply purchasing (and consistently replacing) desiccant for each Riker box and jewel box will stave off rust? I love having my meteorites on display and the notion of squirreling them away in airtight tupperware makes me sad. That being said, I would prefer to protect them than have them ruined by humidity. There are a number of places I can purchase desiccant online. Is there a preferred or recommended location? Finally, is a kit like this worth my time and money? http://www.bhigr.com/store/product.php?productid=453 Thanks so much for your help! Gracie ------------------------------ _______________________________________________ Meteorite-list mailing list Meteorite-list at meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list End of Meteorite-list Digest, Vol 79, Issue 21 ********************************************** -- I am using the free version of SPAMfighter. We are a community of 6 million users fighting spam. SPAMfighter has removed 2813 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this messageReceived on Fri 05 Mar 2010 10:05:20 PM PST |
 StumbleUpon del.icio.us reddit Yahoo MyWeb
|
