Re: [meteorite-list] Rocks from Space Picture of the Day - December 15, 2009
Nice one, Gary. Go with the flow! Thanks for sharing, Michael. Linton - Original Message - From: Michael Johnson mich...@rocksfromspace.org To: meteorite-list@meteoritecentral.com Sent: Monday, December 14, 2009 9:12 PM Subject: [meteorite-list] Rocks from Space Picture of the Day - December 15,2009 http://www.rocksfromspace.org/December_15_2009.html __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mammoth-killing comet hypothesis pooped on again
http://www.canada.com/technology/MAMMOTH+DISCOVERY/2340164/story.html Mammoth discovery: researchers find woolly beasts went extinct slowly By Margaret Munro, Canwest News ServiceDecember 14, 2009 The bones of the woolly mammoth may be spectacular, but scientists say droppings reveal a more complete story about the shaggy beast's demise. Genetic fossils left by feces and urine show the woolly mammoths grazed along the Yukon River thousands of years longer than previously believed, an international team reported Monday. One of the samples, taken from ancient permafrost, indicates the creatures were still around as recently as 7,600 to 10,000 years ago. The findings blow holes in a theory that the mammoths and other ice age megafauna like sabre-toothed tigers were wiped out when a comet or some sort of extraterrestrial impact hit the earth 13,000 years ago. Overkill by early hunters when they arrived in North America or some sort of hyperdisease have also been invoked to try explain the extinctions. Our findings suggest that these events, if they occurred as classically conceived, did not deliver the death blow, the team reports in the Proceedings of the National Academy of Sciences. Rather the new evidence points to a slow decline over several thousand years. It's provocative, but I think goes a distance to understanding the dynamics of what happened, says co-author Duane Froese, an earth scientist at the University of Alberta, who led the team to a well-preserved ancient outcropping of permafrost on the banks of the Yukon River in Alaska. The DNA in the permafrost has been frozen in place since it hit the ground and points to the increasing value of droppings, which are much more plentiful that bones and fossils. An animal leaves only one skeleton, Froese told Canwest News Service on Monday. But they shed DNA throughout their lifetime in their feces and urine. He says the DNA the team has uncovered in the permafrost gives an intriguing snap shot of when central Alaska and the Yukon was a much drier, colder place. While covered with trees today, it would have been windswept grassland 10,000 years ago. And the frozen dirt reveals the region was one of the ghost ranges of the mammoth as the population dwindled away. DNA from the mammoth and prehistoric horse was found in a permafrost layer that dates to between 10,500 and 7,600 years ago, which is between 2,600 and 5,600 years after the animals' supposed extinction. The findings indicate the mammoth and horse coexisted with the first human immigrants in America for 3,500 years and were therefore not wiped out by human beings or natural disasters within a few hundred years, as common theories otherwise argue, team leader Eske Willerslev of the University of Copenhagen said in a statement released with the study. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Duluth, MN fireball video 11DEC09
Dear List Members, A fireball video from Duluth, MN on 11DEC09. It was seen from MN to the Dakotas: http://lunarmeteoritehunters.blogspot.com/2009/12/duluth-mn-fireball-11dec09-15dec09.html Best Regards, Dirk Ross...Tokyo __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] (AD) HALF PRICE 2ND ROUND/SALE
Hi list.I really want to move these last pieces so all half price if interested.I added a couple more far below what they should go for,so here is the final half price list 1.santa do vitoria palmar 58 gram slice $250/$125 2.vaca muerta 6 gram part-slice $40/$20 3. canyon diablo 15 grams $25/$12.50 4.henbury 13 grams $25/$12.50 5.tatahouine 1 gram $10/$5 6.unclassified stone ind. 31 grams $30/$15 7.mercedes 32 gram fragment smf/eduardo card $100 8.nwa 047 .78 gra, part slice eucrite $50/$25 _ Again off list and as usual free shipping.Im making way for a huge piece I just got in a trade. Steve R. Arnold, Chicago!! __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Unveiling Mysterious Possible Comet Strikes on Earth
Unveiling Mysterious Possible Comet Strikes on Earth Science Daily, Dec. 15, 2009 http://www.sciencedaily.com/releases/2009/12/091214075217.htm Yours, Paul H. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Ordinary chondrites - rarest to the most common classes
G'mornin' listites,, What is the least common type of ordinary chondrite, as well as the most common? Thanks --- Melanie IMCA: 2975 eBay: metmel2775 Known on SkyRock Cafe as SpaceCollector09 Unclassified meteorites are like a box of chocolates... you never know what you're gonna get! __ Looking for the perfect gift? Give the gift of Flickr! http://www.flickr.com/gift/ __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Science Daily Article About Pleistocene Extinctions in
Ancient DNA from Dirt, Not Fossilized Bones, Shows Late Survival of Woolly Mammoth and Other Ice Age Megafauna, Science Daily, December 14, 2009 http://www.sciencedaily.com/releases/2009/12/091214151946.htm I am waiting for this paper to be published. a related article is: Mammoths Survived In Britain Until 14,000 Years Ago, New Discovery Suggests, Science Daily, June 18, 2009 http://www.sciencedaily.com/releases/2009/06/090617201758.htm The papers are: Lister, A. M., 2009, te-glacial mammoth skeletons (Mammuthu sprimigenius) from Condover (Shropshire, UK): anatomy, pathology, taphonomy and chronological significance. Geological Journal. vol. 44, no. 4, pp. 447-479. http://www3.interscience.wiley.com/journal/122440134/abstract http://www3.interscience.wiley.com/journal/122458788/issue Allen, J. R. M., J. D. Scourse, A. R. Hall,and G. R. Coope, 2009, Palaeoenvironmental context of the Late-glacial woolly mammoth (Mammuthus primigenius) discoveries at Condover, Shropshire, UK. Geological Journal. vol. 44, no. 4, pp. 414-446 http://www3.interscience.wiley.com/journal/122425954/abstract http://www3.interscience.wiley.com/journal/122458788/issue Scourse, J. D., G. R. Coope, J. R. M. Allen, A. M. Lister, R. A. Housley, R. E. M. Hedges, A. S. G. Jones, and R. Watkins, 2009, Late-glacial remains of woolly mammoth (Mammuthus primigenius) from Shropshire, UK: stratigraphy, sedimentology and geochronology of the Condover site. Geological Journal. vol. 44, no. 4, pp. 392-413. http://www3.interscience.wiley.com/journal/122425957/abstract http://www3.interscience.wiley.com/journal/122458788/issue Yours, Paul H, __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Absence of Evidence for a Meteorite Impact Event 13, 000 Years Ago
Absence of Evidence for a Meteorite Impact Event 13,000 Years Ago Science Daily, Dec. 14, 2009) — An international team of scientists led by researchers at the University of Hawaii at Manoa has found no evidence supporting an extraterrestrial impact event at the onset of the Younger Dryas approximately 13,000 years ago. http://www.sciencedaily.com/releases/2009/12/091208132734.htm The paper is: Paquay, F. S. G. Ravizza, S. Goderis, P. Claeys, S. Goderis, F. Vanhaeck, M. Boyd, T. A. Surovell, V. T. Holliday, and C. V. Haynes, Jr., 2009, Absence of geochemical evidence for an impact event at the Bølling–Allerød/Younger Dryas transition. Proceedings of the National Academy of Sciences Published online before print December 10, 2009, doi: 10.1073/pnas.0908874106 http://www.pnas.org/content/early/2009/12/09/0908874106 http://www.pnas.org/search?fulltext=Pleistocene+extinctionsortspec=datesubmit=Submitandorexactfulltext=phrase Yours, Paul H. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD-Christmas Countdown Clearance
Aloha listees, With just ten more days before xmas, present purchasing procrastinators (like me) have a lot of discounted meteorites to choose from in my ebay auction ending this Saturday, December 19 starting at 7:30 am PST / 10:30 am Eastern / 3:30 pm London / 5:30 pm Helsinki / 11:30 pm Singapore. Park Forest L5 4.6g slice w/ dual lithologies, currently at $99 Chinga Ataxite 173g Mirror Finish Slice, starts at $199 NWA x poss type 3 Chondrule Lovers endcut starts at $530 NWA 2975 Martian shergottite individuals 0.16, 0.56, from $59 D'Orbigny Angrite 0.03, 0.10, 0.23g frags, starting from $12 Juancheng H5 Oriented 5.42g individual w/ flowlines, $19 Allende CV3.2 3.44g AAA fragment w/ huge CAI, $8.77/g Allende CV3.2 Slices Individuals starting at only $10/g Murchison CM2 0.03, 0.27, 0.42g Fresh crusted frags Camel Donga Euc 5.93g Flowlined beauty, starting @ $75 Millbillillie Euc 18.85g AAA Private Reserve steal $225 NWA 1877 Oli Dio 3.25g Very Rare big frag, starts @ 99¢ NWA 5701 L3 10.6g Fresh crusted slab, starts @ 99¢ ... and the usual assortment of quality NWA x stones, slices pallasite, Bassikounou, Chergach, Bilanga, Henbury, Mundrabilla, a Drop Dead Gorgeous Red Crystal Mantle Xenolith (Olivine bomb) SLICE, Galileoscope, Apollo 11 40th Anniversary patch, and an Aerogel silica chunk. A lot of cool stocking stuffers at all budget levels - See them all here: http://shop.ebay.com/fujmon/m.html Remember that you can count on the Big Kahuna to provide you with the highest quality authentic meteorites at the lowest prices on earth. Gary Fujihara Big Kahuna Meteorites (IMCA#1693) 105 Puhili Place, Hilo, Hawaii 96720 (808) 640-9161 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Huge Geminid captured
Aloha listees, I received an email from astro-friend Wally Pacholka, who is an astrophotographer extraordinaire, and who visited us on Mauna Kea earlier in the year for our Dark Sky Star Party http://astroday.net/DSSP.html. In the email, Wally attached an incredible image of a Geminid fireball he caught Sunday night during the peak. It is perhaps one of the most brilliant Geminids I have seen, both pictorially and in person. Wally says that the Geminid shower from where he was located was terrific last night - one of the best I have seen [except nov 2001 leonids], and goes on to mention that this photo may be the largest Geminid catch on record. Have a look here: http://astroday.net/Images/_Geminid-Pacholka.jpg By the way, Wally has a website, where many of his extraordinary astrophotos are posted and available in prints for sale: http://AstroPics.com Gary Fujihara Big Kahuna Meteorites (IMCA#1693) 105 Puhili Place, Hilo, Hawaii 96720 (808) 640-9161 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Its Not A Crater
Hey Guys, Thanks for all of the great feedback on this. I think the prevailing theory would be: an animal started a hole maybe digging for remnants of a salt block and then erosion and heifers made the hole bigger over time. The hole is right next to the path the cows take through the pasture and it was clear that the cows had stepped all over the hole. Not sure they started it, but they certainly could have made it worse. Next time I'm out there I will ask the farmer about the salt block. I'll also try to metal detect a little more around the hole. I'm having a lot of problems with false positives on my metal detector. I also don't think it will go very deep, so it wasn't very useful trying to diagnose this hole. The hole gave off beeps, but most of the land around PA gives off beeps. The detector I'm using is: http://www.kellycodetectors.com/minelab/minelab-relicdetectors.htm If the farmer says no to the salt block, I'm not sure how I should proceed, but I'll cross that bridge when I come to it. Thanks again for the feedback! Mike On Tue, Dec 15, 2009 at 1:03 AM, Mark Bowling mina...@yahoo.com wrote: A fence will not be a deterrent for deer, and they'll get to the salt blocks left for the cows. I thought it was interesting that it's along side the path. Good luck none the less! I would definitely follow up... Mark --- On Mon, 12/14/09, Mike Hankey mike.han...@gmail.com wrote: From: Mike Hankey mike.han...@gmail.com Subject: Re: [meteorite-list] Its Not A Crater To: Dave Myers whitefalcons...@yahoo.com Cc: meteoritelist meteorite-list@meteoritecentral.com Date: Monday, December 14, 2009, 5:10 PM Dave, Thanks for the reply. This is a cow pasture and there are a lot of hoof prints in and around the hole (around the entire field really). I will ask him about the salt blocks. The pasture is fenced in, so if he did leave anything out, it wouldn't be for deer, but only cows. Thanks, Mike On Mon, Dec 14, 2009 at 7:06 PM, Dave Myers whitefalcons...@yahoo.com wrote: Hi Mike and list, coming from a family of farmers in Ohio, (and deer hunters,) It looks from the photos that there are a lot of animal tracks around it, I would ask the farmer if salt blocks were placed there for years. The animals will dig a pit after many years! even a couple. If he says No, Get a back hole and dig! Dave --- On Mon, 12/14/09, Mike Hankey mike.han...@gmail.com wrote: From: Mike Hankey mike.han...@gmail.com Subject: [meteorite-list] Its Not A Crater To: meteoritelist meteorite-list@meteoritecentral.com Date: Monday, December 14, 2009, 10:37 PM Hi Guys, I was wondering around the fields of Lancaster PA near the high mass zone of the newly computed fall line and happened across a really weird hole. The hole is 5 feet wide, 6 feet long and about 16 inches deep. I posted pictures and information here: http://www.mikesastrophotos.com/baltimore-pa-meteor/its-not-a-crater/ I'm not saying this is a crater by any means and I understand that meteorites do not make craters 99.9% of the time, however I still think its really weird and I wanted to get some feedback as to what you guys think. Please read the post and look at the pictures and lmk your thoughts. Thanks, Mike __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Huge Geminid captured
I received an email from astro-friend Wally Pacholka, who is an astrophotographer extraordinaire, It is indeed one of the nicer one's I've seen. The sparkle look appears to be due to the use of a star filter of some kind however. Still, very nice looking. geozay __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Its Not A Crater
Hey Mike, This is definitely cow related. I grew up on a dairy farm, and you saw these all the time along cow paths. They're going for the water. As soon as I saw it, I knew what it was! But then, when Nininger studied the Brenham crater, it was thought to be a buffalo wallow (hog waller). Phil Whitmer __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] New Paper About cometary airbursts, atmospheric chemistry, and the Younger Dryas
There is a new paper available online about cometary airbursts, atmospheric chemistry, and the hypothesized Younger Dryas impact. It is: Melott, A. L., B. C. Thomas, G. Dreschhoff, C. K. Johnson, 2009, Cometary airbursts and atmospheric chemistry: Tunguska and a candidate Younger Dryas event.arXiv:0907.1067v3 [astro-ph.EP] Its web page and abstract is at http://arxiv.org/abs/0907.1067 The PDF file of it is at http://arxiv.org/pdf/0907.1067v3 Comments: Accepted for publication in Geology. Replaced to conform with version shortened to meet publication size limits Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Atmospheric and Oceanic Physics (physics.ao-ph); Geophysics (physics.geo-ph) Cite as:arXiv:0907.1067v3 [astro-ph.EP] Yours, Paul H. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] YD impacts: Something happened, but what and when?
Hi Paul, Darren, all - A couple of points are in order here. To show you how underfunded impact research is, for several decades Chichxulub was thought to be the only impact associated with the KT boundary, and now we have Shiva. AS regards the hypothesized YD impactors, we are not talking about KT sized impactors. Traces are in the range of parts per million to parts per billion, and then in a very very thing layer. (Consider the searches at Tunguska.) Further, the 14C dates from this period are known to be funky, often by several thousand years, making the search harder, and making sediment core sample dating very very difficult. And since the impacts were not KT sized, you can expect wide regional variations. We know mammoth survived on Wrangel Island until very late. There's anothef factor here, which is that a small impact in the right place can trigger extreme effects, say one around glacial Lake Agassiz. Aside from passing on some of the peoples' memories of these impacts: http://forum.palanth.com/index.php/topic,1093.0.html and noting the quarry abandonment, there's not much more I can add o this one. (But if any list member wants a copy of the Trempealeau petroglyph, email me.) Tomorrow's AGU session promises to be interesting and lively. E.P. Grondine Man and Impact in the Americas __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Personal Meteorite Collection Sale
Hi All, I hate to do this, but I've decided to sell some of my most prized collection pieces, including my only West Texas (Ash Creek) found before the first rain with absolutely pristine fusion crust and pale white interior! I also have two half cuts of a very rare unwa stone achondrite? eucrite? (unknown) with a HUGE iron inclusion, a WHITE matrix, and superb CRACKLY fusion crust. Contact me off-list for a complete list of pieces, prices and terms of sale. Regards, Eric Wichman Meteorites USA Meteorite Blog Meteorite Wiki __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] NASA Partners with Saudi Arabia on Moon and Asteroid Research
Dec. 15, 2009 Michael Braukus Headquarters, Washington 202-358-1979 michael.j.brau...@nasa.gov Michael Mewhinney Ames Research Center, Moffett Field, Calif. 650-604-3937 michael.mewhin...@nasa.gov RELEASE: 09-284 NASA PARTNERS WITH SAUDI ARABIA ON MOON AND ASTEROID RESEARCH WASHINGTON -- NASA and the Kingdom of Saudi Arabia's King Abdulaziz City for Science and Technology (KACST) have signed a joint statement that allows for collaboration in lunar and asteroid science research. The partnership recognizes the Saudi Lunar and Near-Earth Object Science Center as an affiliate partner with the NASA Lunar Science Institute at NASA's Ames Research Center in Moffett Field, Calif. This collaboration is within the scope of the Memorandum of Understanding on Science and Technology signed between the Kingdom of Saudi Arabia and the United States of America last year and later ratified by the Council of Ministers, said H.H. Dr. Turki Bin Saud Bin Mohammed Al-Saud, vice president for Research Institutes, KACST. The international interest in lunar science and, more recently, near Earth objects led to the establishment of the Saudi Lunar and Near Earth Object Science Center as a focal point for lunar science and NEO studies in the Kingdom of Saudi Arabia. Furthermore, we are looking forward to our expanding collaboration with NASA for the benefit of both countries. NASA's Lunar Science Institute exists to conduct cutting-edge lunar science and train the next generation of lunar scientists and explorers, said Greg Schmidt, institute deputy director at Ames. Our international partnerships are critical for meeting these objectives, and we are very excited by the important science, training and education that our new Saudi colleagues bring to the NASA Lunar Science Institute. This is an important advance in our growing program of bilateral science and technology cooperation, said U.S. Ambassador to Saudi Arabia James Smith. It will help realize President Obama's goal, expressed in his June 4 speech to the Muslim world, of increasing our cooperation on science and technology, which we believe closely corresponds to King Abdullah's vision. The Saudi science center's proposal brings technical and engineering expertise to advance the broad goals of lunar science at the institute. Specific areas of lunar study of both scientific and cultural importance include radar and infrared imaging, laser ranging and imaging, and topographical studies. The center's studies in near-Earth object science also offer important contributions to an area of importance to NASA. The Saudi Lunar and Near Earth Object Science Center's primary mission is to direct all lunar and near Earth object related research within the Kingdom of Saudi Arabia, said Dr. Haithem Altwaijry, deputy director of the National Satellite Technology Program at KACST. It will reach out to students in addition to researchers and present fertile ground for scientific research. NASA welcomes international cooperation for mutual benefit with organizations large and small in all regions of the world, said Michael O'Brien, assistant administrator for external relations at NASA Headquarters in Washington. Our continuing discussions with Saudi Arabian officials may lead to future joint scientific collaboration in other areas of mutual interest. To learn more about the NASA Lunar Science Institute visit: http://lunarscience.nasa.gov -end- __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Trough Deposits on Mars Point to Complex Hydrologic Past
http://www.psi.edu/press/ Trough Deposits on Mars Point to Complex Hydrologic Past Ed Stiles Public Information Office Planetary Science Institute 520-248-7119 psin...@psi.edu Dec. 15, 2009 - Catherine Weitz, a senior scientist at the Tucson-based Planetary Science Institute, has reported new evidence for multiple, water-related geologic processes on Mars. She and her colleagues studied light-toned deposits (LTDs) within troughs of the Noctis Labyrinthus region in western Valles Marineris using data gathered by three Mars Reconnaissance Orbiter (MRO) instruments: the High Resolution Imaging Science Experiment (HiRISE) camera, the Context Camera (CTX) and the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). Weitz presented the research results today during a morning session of the American Geophysical Union Conference in San Francisco, Calif. We analyzed ten troughs containing well-exposed LTDs, and we found a lot of variability that we didn't expect to see, she said. We found that each of the troughs with LTDs has a unique mineralogy, and, therefore, the processes occurring in each trough were very localized. Weitz and her team identified various types of clays, hydrated silicas, and sulfates in these small basins, which are typically 30 to 100 kilometers across. One LTD included dozens of beds of varying thickness, brightness, color and erosional structure, suggesting that significant amounts of water once existed there. In addition, sulfates were mixed with clays within the deposits, indicating that ph levels may have fluctuated between acidic and alkaline conditions. Another LTD is buried several meters beneath wind-deposited material and is only exposed in the trough's upper walls, indicating it is older than the trough. In still another area, clays are buried beneath younger plains along the trough floor, while in the same trough, but a few kilometers away, there are exposures of hydrated silica and calcium sulfate. The wide variability in deposits and mineralogy in these and the other basins suggests a complex hydrologic history, including multiple events in some troughs, Weitz said. Clearly, these areas were affected by water, she added. In some cases there had to be multiple events. But we don't know how much water was involved or whether it was always a flowing liquid. It might have been groundwater coming from Tharsis, the large volcanic complex to the west, she said. There could have been active volcanism that produced water by melting snow, ice, or underground, hydrothermal processes. These little basins could then have filled or partially filled with some of that water. Another possibility is that material was already in several of the troughs, perhaps as volcanic ash or lava flows, and some kind of hydrothermal activity may have altered these pre-existing deposits. Weitz and her colleagues identified LTDs using the wide-range CTX camera that covers about a 30 km swath at a spatial resolution of 6 meters per pixel. Then they zeroed in on the areas of interest using HiRISE visible light images that cover about a 5-km-wide area with a resolution of about 26 centimeters per pixel. Finally, the corresponding CRISM data -- in the visible and near infrared regions -- revealed the hydrated minerals within each LTD. It's great to have these complementary data sets, Weitz said. Together, the synthesis of these three datasets provides valuable morphologic and mineralogic information needed to interpret the geologic setting and origin of the light-toned deposits within the troughs of Noctis. The LTDs both pre-date and post-date trough formation and occurred between the Noachian (4.6 to 3.5 million years ago) and Amazonian (1.8 billion years ago to the present) eras. The sediments in the LTDs could have formed at the bottom of lakes or pools, but materials also could have been deposited by the wind or fallen as volcanic ash and then been altered by water. Noctis Labyrinthus is a region of Mars that's located between the volcanic Tharsis upland and Valles Marineris, a huge system of canyons. Those working with Weitz on the research include Janice Bishop, of SETI Institute/NASA Ames; Leah Roach, of Frontier Technology; Ralph Milliken, of the Jet Propulsion Laboratory/Caltech; and J. Alexis Rodriguez, of the Planetary Science Institute. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Magazine
Hello Everyone: Just to let you know that it looks like we will have the February issue of Meteorite magazine sent out by the printers in time for the Tucson Gem and Mineral Show! Since US snail mail is so slow, I am not sure if those copies will arrive prior to the show, but I should have extra copies with me during the show. The articles in the issue will be: The Remarkable Meteorite Fall on Lolland, Part 2, by Thomas Grau Return to Buzzard Coulee, by Ralph Croning and Naomi Davis A Star (Chaser) is Born, by Ruben Garcia Discovery of a Meteorite Impact in Southeast Morocco by Abderrahmane Ibhi, Hassane Nachit, and El Hassan Abia Holbrook-One More Little Adventure, by Fred Mason The ASU Meteorite Collection, by Al Mitterling Beginner's Luck, by Lisa Marie Morrison The Rob Elliott Meteorite Auction, by Angus Self Sharing the Enthusiasm, by Matt Smith Star Slough and Pwdre Ser, by David Andrew White and Angel Nieves-Rivera Now, down to business: We are already thinking about the May issue of Meteorite. Our deadline is February 21, so if you are interested in submitting an article, we need to have it by then. Please let me know if you are planning on writing an article or wondering if what you are thinking of writing would be of interest to us and our readers. We can also talk about this at the Gem and Mineral Show, but that is fairly close to the deadline! We hope to hear from you soon. Larry and Nancy Lebofsky __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] ScaleCubes.com
I just wanted to say THANKS to JEFF! I just received my cube today! What an awesome specimen! I like my number too... So cool! These things are heavy... ;) For those of you who haven't yet acquired one you need to pick one up now. The low numbers are going fast. Good thing I got mine! Keep it up Jeff! Regards, Eric Jeff Kuyken wrote: Hi all, I recently decided to try something a little different and had some scale cubes made up. Not your usual cubes either as these are made from Tungsten Carbide with a tolerance of around just 0.05mm or less making them about the most precise cubes I know of. Anyhow, you can read all about it and the story behind them here: http://www.scalecubes.com/about.html Each cube has their own individual serial number on the bottom. The list of available numbers is on the site and I intend to do the best I can with requests. But if it becomes too difficult with specific requests then I will remove that option. In all likelyhood, once this initial offer has been made to the Met List, I will likely remove the serial number option before posting them for sale elsewhere. If anyone has any questions please feel free to contact me off-list. Cheers, Jeff __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Huge Geminid captured
Great shot, Gary! Wally sure gets some good ones. I've got a couple of his prints right here on my wall. I spent a couple hours out in the lounge chair Sunday night, and saw 25 or 30 nice, bright meteors. None quite that nice, though! Thanks for sharing. Linton - Original Message - From: Gary Fujihara fuj...@mac.com To: MeteorList meteorite-list@meteoritecentral.com Sent: Tuesday, December 15, 2009 8:59 AM Subject: [meteorite-list] Huge Geminid captured Aloha listees, I received an email from astro-friend Wally Pacholka, who is an astrophotographer extraordinaire, and who visited us on Mauna Kea earlier in the year for our Dark Sky Star Party http://astroday.net/DSSP.html. In the email, Wally attached an incredible image of a Geminid fireball he caught Sunday night during the peak. It is perhaps one of the most brilliant Geminids I have seen, both pictorially and in person. Wally says that the Geminid shower from where he was located was terrific last night - one of the best I have seen [except nov 2001 leonids], and goes on to mention that this photo may be the largest Geminid catch on record. Have a look here: http://astroday.net/Images/_Geminid-Pacholka.jpg By the way, Wally has a website, where many of his extraordinary astrophotos are posted and available in prints for sale: http://AstroPics.com Gary Fujihara Big Kahuna Meteorites (IMCA#1693) 105 Puhili Place, Hilo, Hawaii 96720 (808) 640-9161 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Looking for the Following Specimens
Hello all I am on the hunt for the following specimens for scientific research, the request is for samples as close to 1cm cubed as possible but they can be individuals, fragments, etc. Park Holbrook Leedy Bruderheim Tenham Portales Valley Kernouve St-Severin Estacado Queens Mercy Butsura If you have any of these please get back to me with price. Thanks and Happy Holidays, Rob Wesel www.nakhladogmeteorites.com www.facebook.com/nakhladog -- We are the music makers... and we are the dreamers of the dreams. Willy Wonka, 1971 __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fireball seen in Gainesville, FL
Hi List, I'm mostly a lurker, but just wanted to report that my husband just walked in the door excitedly telling me he saw a large greenish fireball over our house as he came up the driveway. I'm heading outside now so he can show me exactly which direction it came from and how long it lasted. Hopefully there will be further reports of this event! (So disappointed I didn't see it!) Gracie __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Fireball seen in Gainesville, FL
Quick update: The fireball appeared below Aldebaran fairly low in the sky, and fell straight down to the south/southwest. He said the light was so bright it lit up the roof of our house and the surrounding area. I'm really hoping for more reports tomorrow. Whee! Hi List, I'm mostly a lurker, but just wanted to report that my husband just walked in the door excitedly telling me he saw a large greenish fireball over our house as he came up the driveway. I'm heading outside now so he can show me exactly which direction it came from and how long it lasted. Hopefully there will be further reports of this event! (So disappointed I didn't see it!) Gracie __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rocks from Space Picture of the Day - December 16, 2009
http://www.rocksfromspace.org/December_16_2009.html __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
