[meteorite-list] AD (again!) for Libyan Desert Glass 191 grams
Seems that none of my submissions are getting to the list. If anyone IS getting these emails could they please advise me?! Sorry if this is a double or even post. I am having probs posting to the Metlist! 191g of LDG complete with impacted pebbles and a wonderful tactility!! thanks and sorry for repost! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=270708008081ssPageName=STRK:MESELX:IT dave IMCA #0092 Sec.BIMS __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD Zaklodzie, Camel Donga, Millbillillie and many more
Dear List Members, I have a few really good meteorites for sale : - Zaklodzie a rare Primitive Enstatite Achondrite 59.9 slice. Specimen contain all 3 zones what is rare on this meteorite and graphite nodules (last slice available with graphite!!). This is Museum slice of one or rarest subgroup. Size is 137x43x3 mm. Last such pieces available! Photos : https://picasaweb.google.com/illaenus/Zaklodzie59g# More detailed information on email. - Two small slices of Zaklodzie (form 2 #8211; 3g) with relict of chondrule! https://picasaweb.google.com/illaenus/Zaklodzie?authkey=Gv1sRgCImJhoPY0d_gjwE# - Camel Donga Eucrite 107 gram specimen. About 50 % of crust, specimen break up in atmosphere, on broken surface I found a dropets of shing cust (see photos). https://picasaweb.google.com/illaenus/CamelDonga107?authkey=Gv1sRgCNXGzs7Pq7zoew# - Millbillillie individual, 203 gram 99% crusted eucrite, with super fresh fusion crust. Currently hard to find such big ones. Hard to get such big one now. https://picasaweb.google.com/illaenus/Millbillillie203g# - two pieces of NWA 2690 - 336 and 337 gram (both with cut window). https://picasaweb.google.com/illaenus/NWA2690336grams# and https://picasaweb.google.com/illaenus/NWA2690405g?authkey=Gv1sRgCM_atuimm-CdOQ# (this one still have fragmental glossy crust) - NWA 2696, 688 gram of Howardite. Cool, big specimen: https://picasaweb.google.com/illaenus/NWA2696Howardite687G?authkey=Gv1sRgCIDSvfzj-MjbNA# - Amazing half specimen of Ghubara 1734 gram one, with in situ photo, look at amazing texture (zoom to see details) : https://picasaweb.google.com/illaenus/Ghubara1734g?authkey=Gv1sRgCJiI8eHg_4ec3AE# - Gao Guenie, beauty individual 756 gram, with regmaglipts few flow lines and strange inclusion (visible on second photo). https://picasaweb.google.com/illaenus/Gao756g?authkey=Gv1sRgCJj1tJS__P3y0QE# - big sized chondrite breccia NWA, 9.8 kg, huge solid and fresh inside chondrite. https://picasaweb.google.com/illaenus/NWA98Kg# - beauty crusted, regmaglipted chondrite NWA 1.8 kg https://picasaweb.google.com/illaenus/NWA18Kg# All question please send to my address illae...@gmail.com Kind Regards Tomasz Jakubowski IMCA #2321 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Nice Franconia Meteorite Auction ending today!
You don't see many if any Franconias for sale in this size range anymore... http://cgi.ebay.com/Franconia-Meteorite-42-5-gram-Nice-/250772196963?pt=LH_DefaultDomain_0hash=item3a63300e63 More up for auction too! Jim Wooddell http://desertsunburn.no-ip.org __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD (again!) for Libyan Desert Glass 191 grams
This one made it. I am having trouble too! Jim On Fri, Feb 18, 2011 at 2:14 AM, dave entropyd...@ntlworld.com wrote: Seems that none of my submissions are getting to the list. If anyone IS getting these emails could they please advise me?! Sorry if this is a double or even post. I am having probs posting to the Metlist! 191g of LDG complete with impacted pebbles and a wonderful tactility!! thanks and sorry for repost! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=270708008081ssPageName=STRK:MESELX:IT dave IMCA #0092 Sec.BIMS __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Pasamonte-B
I am seeking information about the so-called Pasamonte-B meteorite. This is not the 1933 Pasamonte polymict eucrite, but as I understand it, an ordinary chondrite, perhaps an L6. Thanks, Carl Agee -- Carl B. Agee Director and Curator, Institute of Meteoritics Professor, Earth and Planetary Sciences MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 Tel: (505) 750-7172 Fax: (505) 277-3577 Email: a...@unm.edu http://epswww.unm.edu/iom/pers/agee.html -- Carl B. Agee Director and Curator, Institute of Meteoritics Professor, Earth and Planetary Sciences MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 Tel: (505) 750-7172 Fax: (505) 277-3577 Email: a...@unm.edu http://epswww.unm.edu/iom/pers/agee.html __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Pasamonte-B
Hello Mr. Agee, On January 26, 2002, Michael Cottingham sent this to the Met.List: PASAMONTE (B), L6 chondrite, Union County, New Mexico. Found August 2001. Total known weight is 185 grams! My wife Wren (= Wren Cottingham) and I (= Michael Cottingham) spent a lot of time this summer hunting the Pasamonte Strewnfield looking for more of the Pasamonte eucrite. This eucrite is way too fragile to have survived on the ground since its fall but I needed to get this search out of my mind once and for all. We hiked and searched the Pasamonte strewnfield for several hundred hours and probably walked over 100 miles searching and searching. While we didn't find any of the eucrites, we did find this one little stone tucked away in an eroded area. Gary Huss at ASU did the work on this stone and it is an L6. The closest landmark was the Pasamonte Ranch - hence the name Pasamonte (b). N 36 degree 14. 562 by W 103 degree 45.515 - this is where the stone was found. I am keeping the main mass for now (40.59 grams), ASU got ~24 grams (Email dated Saturday, January 26, 2002). Maybe Michael has further information on this L6 chondrite! Best regards, Bernd __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Pasamonte-B
Maybe Michael Cottingham can assist. Pasamonte (b) was recovered from Union County, New Mexico during August of 2001. One stone chondrite meteorite, 185 grams, was found by Michael Cottingham who wrote the following on this find; My wife Wren and I spent a lot of time this summer hunting The Pasamonte Strewnfield looking for more of the Pasamonte (Eucrite). This Eucrite is way too fragile to have survived on the ground since its fallbut I needed to get this search out of my mind once and for all. We hiked and searched the Pasamonte Strewnfield for several hundred hours and probably walked over 100 milessearching...searching. While we didn't find any of the Eucriteswe did find this one little stone tucked away in an eroded area. Gary Huss at ASU did the work on this stone and it is an L6. I think it is very pretty and with a low known weight very desirable. The closest landmark was the Pasamonte Ranch. hence the name Pasamonte (b). N 36 degree 14. 562 by W 103 degree 45.515. this is w the stone was found. Arizona State University got ~24 grams for the classification work. Description by Mark Bostick. Chris. Spratt Victoria, BC __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD (again!) for Libyan Desert Glass 191 grams
I got it too. Jim Wooddell jimwoodd...@gmail.com wrote: This one made it. I am having trouble too! Jim On Fri, Feb 18, 2011 at 2:14 AM, dave entropyd...@ntlworld.com wrote: Seems that none of my submissions are getting to the list. If anyone IS getting these emails could they please advise me?! Sorry if this is a double or even post. I am having probs posting to the Metlist! 191g of LDG complete with impacted pebbles and a wonderful tactility!! thanks and sorry for repost! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=270708008081ssPageName=STRK:MESELX:IT dave IMCA #0092 Sec.BIMS __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- Stuart McDaniel Lawndale, NC __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] OT: need folks who use PDS websites
I have been tasked with updating/revising/redoing the Planetary Data Systems Small Bodies Node (PDS-SBN) website. PDS archives data primarily from NASA missions but also from other observations that support NASA missions. The Small Bodies Node of course handles the asteroids, comets and dust so, I'm not too far off topic by posting to this forum. The current (old) site is located at http://pdssbn.astro.umd.edu/ The new site which we are still working on is at http://icarus.astro.umd.edu/ First, if you have used the site before, we want to make sure that the new site is better. Second, I've run into a few questions that we are having problems answering internally because we are too close to the project so we want to know how some users feel. Plus, internally we use the site slightly differently than real users out in the world might... If you are interested please take a look through. Please let me know via private email (let's not spam the list even more than I'm already doing). My email is warne...@astro.umd.edu Information to include that will help me to debug issues: + OS, browser you are using + description of problem + URL of page where problem is occurring + a screen capture jpg (especially if the problem is related to how the page looks) Okay, question for now, should we break out by instrument (and then maybe by mission phase) or by mission phase (and then by instrument if needed)? http://icarus.astro.umd.edu/data_sb/missions/deepimpact/index_new2.shtml OR http://icarus.astro.umd.edu/data_sb/missions/deepimpact/index_new3.shtml Clear Skies! Elizabeth Warner warne...@astro.umd.edu __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: New auctions - great material!
Dear List, I have a great run of auctions ending in 48 hours: http://shop.ebay.com/historic-meteorites/m.html A great mix of everything: historics, NWA, planetary, Tagish, Taza, and even a couple crabs :) Many items still at 99 cents and the potential for many bargains. Thanks for looking and have a fantastic weekend! -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 -- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] RE Where Did We Come From?
Great piece. The focus is science with some excellent comments about how difficult meteorites are to find. They even mentioned meteorites from the Moon, considered since 1999 as the most coveted of all according to the article Mining for Meteorites in Smithsonian Magazine. It seems that the media falls to mention them often enough. Maybe it is because most treasure hunters consider them out of reach. I hope some lucky meteorite hunter finds the first lunar meteorite on this continent this year. Happy Hunting, Adam - Original Message From: Ruben Garcia mrmeteor...@gmail.com To: actionshoot...@carolina.rr.com Cc: meteorite-list@meteoritecentral.com; Carl 's carloselgua...@hotmail.com Sent: Thu, February 17, 2011 6:44:48 AM Subject: Re: [meteorite-list] RE Where Did We Come From? Thanks Guys! That was fun to film and really fun to watch, I'm thinking this TV thing might be cool! For those of you that missed it, fear not! Here it is the first 25 minutes condensed into 7 minutes: http://www.youtube.com/user/meteorfright#p/u/0/Fx06oOzVb5M Behind the scenes photos: For behind the scenes photos click here: http://s260.photobucket.com/albums/ii35/meteoritemall/Ruben%20Garcia%20on%20NOVA%20Science%20NOW%20TV%20show/ More info here: http://www.MrMeteorite.Com On Thu, Feb 17, 2011 at 7:34 AM, actionshoot...@carolina.rr.com wrote: That was an awesome show.very informative. My wife loved it too!! Good job Ruben!! I bet NdGT is cool to work with. Carl 's carloselgua...@hotmail.com wrote: Hey Ruben, Caught the first 15 minutes! Great job! Carl2 Ruben wrote: ...The NOVA ScienceNOW episode entitled “Where Did We Come From? “will air on Wednesday, February 16, 2011... __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- Stuart McDaniel Lawndale, NC __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- Rock On! Ruben Garcia Website: http://www.mr-meteorite.net Articles: http://www.meteorite.com/blog/ Videos: http://www.youtube.com/profile?user=meteorfright#p/u __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] bog iron
not meteorite but a nice meteowrong. Anyone wants some $1 kg plus you pay shipping. Slice it it looks like an iron. Like nantan. Is excreting iron sulfite. I have 300kg availible. Nice meteowrong __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Can WISE Find the Hypothetical 'Tyche'?
http://www.jpl.nasa.gov/news/news.cfm?release=2011-060 Can WISE Find the Hypothetical 'Tyche'? Jet Propulsion Laboratory February 18, 2011 Background In November 2010, the scientific journal Icarus published a paper by astrophysicists John Matese and Daniel Whitmire, who proposed the existence of a binary companion to our sun, larger than Jupiter, in the long-hypothesized Oort cloud -- a faraway repository of small icy bodies at the edge of our solar system. The researchers use the name Tyche for the hypothetical planet. Their paper argues that evidence for the planet would have been recorded by the Wide-field Infrared Survey Explorer (WISE). WISE is a NASA mission, launched in December 2009, which scanned the entire celestial sky at four infrared wavelengths about 1.5 times. It captured more than 2.7 million images of objects in space, ranging from faraway galaxies to asteroids and comets relatively close to Earth. Recently, WISE completed an extended mission, allowing it to finish a complete scan of the asteroid belt, and two complete scans of the more distant universe, in two infrared bands. So far, the mission's discoveries of previously unknown objects include an ultra-cold star or brown dwarf, 20 comets, 134 near-Earth objects (NEOs), and more than 33,000 asteroids in the main belt between Mars and Jupiter. Following its successful survey, WISE was put into hibernation in February 2011. Analysis of WISE data continues. A preliminary public release of the first 14 weeks of data is planned for April 2011, and the final release of the full survey is planned for March 2012. Frequently Asked Questions Q: When could data from WISE confirm or rule out the existence of the hypothesized planet Tyche? A: It is too early to know whether WISE data confirms or rules out a large object in the Oort cloud. Analysis over the next couple of years will be needed to determine if WISE has actually detected such a world or not. The first 14 weeks of data, being released in April 2011, are unlikely to be sufficient. The full survey, scheduled for release in March 2012, should provide greater insight. Once the WISE data are fully processed, released and analyzed, the Tyche hypothesis that Matese and Whitmire propose will be tested. Q: Is it a certainty that WISE would have observed such a planet if it exists? A: It is likely but not a foregone conclusion that WISE could confirm whether or not Tyche exists. Since WISE surveyed the whole sky once, then covered the entire sky again in two of its infrared bands six months later, WISE would see a change in the apparent position of a large planet body in the Oort cloud over the six-month period. The two bands used in the second sky coverage were designed to identify very small, cold stars (or brown dwarfs) -- which are much like planets larger than Jupiter, as Tyche is hypothesized to be. Q: If Tyche does exist, why would it have taken so long to find another planet in our solar system? A: Tyche would be too cold and faint for a visible light telescope to identify. Sensitive infrared telescopes could pick up the glow from such an object, if they looked in the right direction. WISE is a sensitive infrared telescope that looks in all directions. Q: Why is the hypothesized object dubbed Tyche, and why choose a Greek name when the names of other planets derive from Roman mythology? A: In the 1980s, a different companion to the sun was hypothesized. That object, named for the Greek goddess Nemesis, was proposed to explain periodic mass extinctions on the Earth. Nemesis would have followed a highly elliptical orbit, perturbing comets in the Oort Cloud roughly every 26 million years and sending a shower of comets toward the inner solar system. Some of these comets would have slammed into Earth, causing catastrophic results to life. Recent scientific analysis no longer supports the idea that extinctions on Earth happen at regular, repeating intervals. Thus, the Nemesis hypothesis is no longer needed. However, it is still possible that the sun could have a distant, unseen companion in a more circular orbit with a period of a few million years -- one that would not cause devastating effects to terrestrial life. To distinguish this object from the malevolent Nemesis, astronomers chose the name of Nemesis's benevolent sister in Greek mythology, Tyche. JPL manages and operates the Wide-field Infrared Survey Explorer for NASA's Science Mission Directorate, Washington. The principal investigator, Edward Wright, is at UCLA. The mission was competitively selected under NASA's Explorers Program managed by the Goddard Space Flight Center, Greenbelt, Md. The science instrument was built by the Space Dynamics Laboratory, Logan, Utah, and the spacecraft was built by Ball Aerospace Technologies Corp., Boulder, Colo. Science operations and data processing take place at the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena. Caltech manages
[meteorite-list] AD: Ebay - Ivuna, North Chile, NWA 4379, NWA 4482, NWA 5240 and LDG gems
Dear list members, A few small meteorite slices and fragments next to LDG and other stuff are available on E-Bay ending in about 2 days (Sunday morning PDT). No reserve, low starting bid, some still at USD 1.99 ! Please have a look if interested. More meteorites soon on Ebay like Assisi, Bjurböle, Daniel's Kuil, Ella Island, Ibbenbüren, Sacramento Mts Thanks and enjoy your weekend. Thomas www.saharagems.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Odyssey THEMIS Images: February 14-18, 2011
MARS ODYSSEY THEMIS IMAGES February 14-18, 2011 o Doublet Crater (14 February 2011) http://themis.asu.edu/node/5577 o Channel (15 February 2011) http://themis.asu.edu/node/5578 o Pityusa Patera (16 February 2011) http://themis.asu.edu/node/5579 o Wind and Rock (17 February 2011) http://themis.asu.edu/node/5580 o Delta (18 February 2011) http://themis.asu.edu/node/5581 All of the THEMIS images are archived here: http://themis.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in co.oration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD: Ebay - Ivuna, North Chile meteorites .....
Hi all, So sorry, here the link to my auctions: http://stores.ebay.com/SAHARAGEMS-DESERT-STONES-and-more?_rdc=1 Anyway, Have a nice weekend once again... Thomas __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Wanted: Tucson Show Photo Pages Videos
Dear List, If you have a photo page or YouTube video from the 2011 Tucson Show please send me the URL off list and I'll add in the upcoming February issue of Meteorite Times. The February issue should be up around the 25th. Thank you! Paul __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] OT (Sorta...) Why Are Death Valley's Rocks Moving Themselves?
Interesting photo- wish I could crawl out of my chair in Ohio and go check those rocks out. I know this has been discussed on the list before. Have a good night. Mike http://www.foxnews.com/scitech/2011/02/18/death-valleys-rocks-moving-racetrack-playa/ Why Are Death Valley's Rocks Moving Themselves? By Philip Schewe Published February 18, 2011 | Inside Science News Service Death Valley National Park contains many mysteries, including one of nature's strangest phenomena: rocks that seem to move around all on their own. In the remote, almost totally dry lakebed called Racetrack Playa, some of the rocks move themselves across the desert floor when people aren't watching. Scientists know the rocks move because they leave narrow tracks trailing behind them, but they haven't actually seen it happen. And although one can't entirely rule out the possibility of some prank being played, at least some of the rocks appear to be moving under natural circumstances. It doesn't rain often in Racetrack Playa, and when it does the lakebed can flood. The rocks don't float exactly, but the main explanation for their movement is that moisture can make the mud on which the rocks sit more slick, making it easier for high winds to push the rocks along. Another explanation offered is that the temporary deposit of water, chilled to form extensive sheets of ice, might help to reflect and focus the winds, making it easier for the rocks to move. The winds required to move rocks in this way would seem to be at the level of 100 mph or more. That's why the rocks are sometimes referred to as sailing stones. They are rare but they have been noticed in Racetrack Playa and a few other arid places around the world subject to occasional floods Ralph Lorenz, a scientist at Johns Hopkins University, offers a new explanation. The rocks are actually lifted up by the ice, or at least made more buoyant by the ice, making it easier for the rocks to migrate. If the rocks are moving about on ice rafts, the ground below cannot offer as much resistance against their motion and the winds needed for movement wouldn't have to be as great, he argued. So why hasn't the motion been observed? Movement happens for only tens of seconds, at intervals spaced typically by several years, said Lorenz. This would demand exceptional patience as well as luck. So, the rocks are probably traveling on the coldest and windiest days that occur over a period of several years. The most likely time would be in the very early dawn. Little wonder no one is around to witness the event. Lorenz and his colleagues would like to install inexpensive time-lapse monitoring of the Playa area, using digital cameras. The lakebed is about 2.5 miles long and 1.25 miles wide. They have also performed some laboratory tests by blowing on ice-assisted rocks. These simple tests support the ice-raft hypothesis. The results appear in the January 2011 issue of the American Journal of Physics. An additional reason for studying the rocks of Racetrack Playa is that its qualities resemble those at a drying-up lake on Saturn's moon Titan. Pictures taken by the Cassini-Huygens mission reveal what look like river channels, cobblestones, and lake beds or mud flats. Only at Titan's Ontario Lacus, as one interesting site is called, the runoff consists of liquid hydrocarbons, not water. Some pictures even seem to be showing a bathtub ring left by what is probably a drying lake. One of Lorenz's colleagues, Brian K. Jackson, who works at NASA's Goddard Space Flight Center, also likes the idea that their research at Racetrack Playa has a dual purpose. It's been exciting trying to solve a mystery that has resisted solution for sixty years, Jackson said. Scientific accounts of the Racetrack Playa rocks go back to at least 1948, and there were certainly stories about the playa long before that. And Jackson also believes discoveries in Death Valley, here on Earth, will help us to better understand similar real estate on Titan or Mars. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] OT (Sorta...) Why Are Death Valley's Rocks Moving Themselves?
On Feb 18, 2011, at 7:24 PM, Michael Groetz mpg4...@gmail.com wrote: Interesting photo- wish I could crawl out of my chair in Ohio and go check those rocks out. I know this has been discussed on the list before. Have a good night. Mike http://www.foxnews.com/scitech/2011/02/18/death-valleys-rocks-moving-racetrack-playa/ Why Are Death Valley's Rocks Moving Themselves? By Philip Schewe Published February 18, 2011 | Inside Science News Service Death Valley National Park contains many mysteries, including one of nature's strangest phenomena: rocks that seem to move around all on their own. In the remote, almost totally dry lakebed called Racetrack Playa, some of the rocks move themselves across the desert floor when people aren't watching. Scientists know the rocks move because they leave narrow tracks trailing behind them, but they haven't actually seen it happen. And although one can't entirely rule out the possibility of some prank being played, at least some of the rocks appear to be moving under natural circumstances. It doesn't rain often in Racetrack Playa, and when it does the lakebed can flood. The rocks don't float exactly, but the main explanation for their movement is that moisture can make the mud on which the rocks sit more slick, making it easier for high winds to push the rocks along. Another explanation offered is that the temporary deposit of water, chilled to form extensive sheets of ice, might help to reflect and focus the winds, making it easier for the rocks to move. The winds required to move rocks in this way would seem to be at the level of 100 mph or more. That's why the rocks are sometimes referred to as sailing stones. They are rare but they have been noticed in Racetrack Playa and a few other arid places around the world subject to occasional floods Ralph Lorenz, a scientist at Johns Hopkins University, offers a new explanation. The rocks are actually lifted up by the ice, or at least made more buoyant by the ice, making it easier for the rocks to migrate. If the rocks are moving about on ice rafts, the ground below cannot offer as much resistance against their motion and the winds needed for movement wouldn't have to be as great, he argued. So why hasn't the motion been observed? Movement happens for only tens of seconds, at intervals spaced typically by several years, said Lorenz. This would demand exceptional patience as well as luck. So, the rocks are probably traveling on the coldest and windiest days that occur over a period of several years. The most likely time would be in the very early dawn. Little wonder no one is around to witness the event. Lorenz and his colleagues would like to install inexpensive time-lapse monitoring of the Playa area, using digital cameras. The lakebed is about 2.5 miles long and 1.25 miles wide. They have also performed some laboratory tests by blowing on ice-assisted rocks. These simple tests support the ice-raft hypothesis. The results appear in the January 2011 issue of the American Journal of Physics. An additional reason for studying the rocks of Racetrack Playa is that its qualities resemble those at a drying-up lake on Saturn's moon Titan. Pictures taken by the Cassini-Huygens mission reveal what look like river channels, cobblestones, and lake beds or mud flats. Only at Titan's Ontario Lacus, as one interesting site is called, the runoff consists of liquid hydrocarbons, not water. Some pictures even seem to be showing a bathtub ring left by what is probably a drying lake. One of Lorenz's colleagues, Brian K. Jackson, who works at NASA's Goddard Space Flight Center, also likes the idea that their research at Racetrack Playa has a dual purpose. It's been exciting trying to solve a mystery that has resisted solution for sixty years, Jackson said. Scientific accounts of the Racetrack Playa rocks go back to at least 1948, and there were certainly stories about the playa long before that. And Jackson also believes discoveries in Death Valley, here on Earth, will help us to better understand similar real estate on Titan or Mars. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Italy Meteor 18FEB2011
Dear List, Another beautiful meteor seen in Italy: http://lunarmeteoritehunters.blogspot.com/2011/02/breaking-news-italy-bolide-meteor.html Dirk Ross...Tokyo __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] OT (Sorta...) Why Are Death Valley's Rocks Moving Themselves?
Mike List - I've found my own playa with sailing stones just a couple weeks ago while meteorite hunting in Tyler Valley here in California's beautiful Mojave desert. Pict at the link below. http://www.mikestang.com/user/cimage/TylerValley09.JPG Regards, ~Michael Mulgrew On Fri, Feb 18, 2011 at 5:24 PM, Michael Groetz mpg4...@gmail.com wrote: Interesting photo- wish I could crawl out of my chair in Ohio and go check those rocks out. I know this has been discussed on the list before. Have a good night. Mike http://www.foxnews.com/scitech/2011/02/18/death-valleys-rocks-moving-racetrack-playa/ Why Are Death Valley's Rocks Moving Themselves? By Philip Schewe Published February 18, 2011 | Inside Science News Service Death Valley National Park contains many mysteries, including one of nature's strangest phenomena: rocks that seem to move around all on their own. In the remote, almost totally dry lakebed called Racetrack Playa, some of the rocks move themselves across the desert floor when people aren't watching. Scientists know the rocks move because they leave narrow tracks trailing behind them, but they haven't actually seen it happen. And although one can't entirely rule out the possibility of some prank being played, at least some of the rocks appear to be moving under natural circumstances. It doesn't rain often in Racetrack Playa, and when it does the lakebed can flood. The rocks don't float exactly, but the main explanation for their movement is that moisture can make the mud on which the rocks sit more slick, making it easier for high winds to push the rocks along. Another explanation offered is that the temporary deposit of water, chilled to form extensive sheets of ice, might help to reflect and focus the winds, making it easier for the rocks to move. The winds required to move rocks in this way would seem to be at the level of 100 mph or more. That's why the rocks are sometimes referred to as sailing stones. They are rare but they have been noticed in Racetrack Playa and a few other arid places around the world subject to occasional floods Ralph Lorenz, a scientist at Johns Hopkins University, offers a new explanation. The rocks are actually lifted up by the ice, or at least made more buoyant by the ice, making it easier for the rocks to migrate. If the rocks are moving about on ice rafts, the ground below cannot offer as much resistance against their motion and the winds needed for movement wouldn't have to be as great, he argued. So why hasn't the motion been observed? Movement happens for only tens of seconds, at intervals spaced typically by several years, said Lorenz. This would demand exceptional patience as well as luck. So, the rocks are probably traveling on the coldest and windiest days that occur over a period of several years. The most likely time would be in the very early dawn. Little wonder no one is around to witness the event. Lorenz and his colleagues would like to install inexpensive time-lapse monitoring of the Playa area, using digital cameras. The lakebed is about 2.5 miles long and 1.25 miles wide. They have also performed some laboratory tests by blowing on ice-assisted rocks. These simple tests support the ice-raft hypothesis. The results appear in the January 2011 issue of the American Journal of Physics. An additional reason for studying the rocks of Racetrack Playa is that its qualities resemble those at a drying-up lake on Saturn's moon Titan. Pictures taken by the Cassini-Huygens mission reveal what look like river channels, cobblestones, and lake beds or mud flats. Only at Titan's Ontario Lacus, as one interesting site is called, the runoff consists of liquid hydrocarbons, not water. Some pictures even seem to be showing a bathtub ring left by what is probably a drying lake. One of Lorenz's colleagues, Brian K. Jackson, who works at NASA's Goddard Space Flight Center, also likes the idea that their research at Racetrack Playa has a dual purpose. It's been exciting trying to solve a mystery that has resisted solution for sixty years, Jackson said. Scientific accounts of the Racetrack Playa rocks go back to at least 1948, and there were certainly stories about the playa long before that. And Jackson also believes discoveries in Death Valley, here on Earth, will help us to better understand similar real estate on Titan or Mars. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@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@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
