[meteorite-list] Here we go again
Okay-- here's my question-- could an impact that leaves no crater cause global (or large-fraction-of-the-global) forest fires? My idea of what causes firest fires in large impacts-- like Chixalub (sp? too lazy to look it up this morning) is molten splash launched from the-- wait for it-- crater. Impactites and tektites, if you will. http://www.thisiswesternmorningnews.co.uk/news/Comet-strike-end-world-scenario/article-265193-detail/article.html Comet strike would be cataclysmic A DEVASTATING collision between the Earth and a wayward comet which wiped out nearly every living thing across an entire continent will happen again and cost millions of lives, a Westcountry scientist claims. The three-mile wide comet, named Clovis after the fledgling North American civilisation it drove to extinction, exploded in the atmosphere 13,000 years ago with a force of 20 million megatons larger than a simultaneous blast by all the nuclear weapons in history, says Professor Chris Turney, of the University of Exeter. It left no impact crater but sparked the biggest wildfires in history, which stretched across the continent and suffocated humans and animals with overwhelming amounts of soot and smoke, leaving the few survivors with no vegetation or prey to live on. Fiery debris from the comet also melted huge portions of the ice sheet, which drastically altered the planet's climate. Massive volumes of fresh water found their way into the oceans and changed their currents, plunging the Earth into an Ice Age for 1,000 years. Although NASA is tracking up to 5,000 comets and asteroids throughout the Solar System, of which 700 are over a mile wide, scientists say the vastness of space means many inevitably have not been detected, and only one has to be on a collision course with Earth to cause unprecedented carnage. The theory is the subject of a new TV documentary on the History Channel at 8pm tonight. Speaking on the programme, Prof Turney, professor of physical geography at the University of Exeter, said another large comet would cause unimaginable damage. He said: We're just starting to work out for a fact that comets are far more frequent than we were led to believe. If it just exploded as an air burst, it would fry a city and basically just destroy it. There would not really be much left at all, apart from a bit of rubble. It would be the end of the world scenario for those people. Experts believe the aftermath of such an impact would accelerate global warming and cause the destruction of large areas of coastline around the world as sea levels rose. Prof Turney said the Clovis explosion caused the largest forest fires ever seen. It would have been a very strange place with charcoal and dust everywhere on the surface where these fires had gone through, he said. Prof Turney said it was only pure chance the famous Tunguska Event, a meteorite which exploded above Siberia exactly 100 years ago, destroyed a remote area of forest instead of heavily populated cities like London, Paris or New York. Had it entered the atmosphere a few hours earlier, it would have hit Western Europe, potentially costing millions of lives, he said. If the comet of Tunguska had actually exploded over London, it would have caused widespread devastation. We were just incredibly fortunate that this thing exploded over Siberia. It was a total fluke. The Tunguska meteorite was just 165ft in diameter, compared with the three-mile wide Clovis comet. Clovis archaeological sites across North America show a two-inch carbon mat in the rock dating back 13,000 years, indicating huge amounts of soot in the atmosphere, as well as elements like iridium, which is brought to Earth from space. At the time, much of the continent was covered by forests and vast grasslands, enabling wildfires to spread uncontrollably. Huge shockwaves from the explosion started hurricane-force winds which fanned the flames at incredible speeds across the land. As the soot fell onto the ice sheet, the darker material absorbed more sunlight which melted the ice and forced fresh water into the oceans, sending global temperatures plunging by 5C to 10C. Prehistoric Megastorms: Comet Storm is on the History Channel at 8pm tonight. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Here we go again
The widespread return to the surface of the planet of countless molten rock debris which didn't attain escape velocity. That's one way. The heat genetated by a huge explosive blast either on the surface or in the atmosphere is at leastone more. There must be other options. Jerry Flaherty - Original Message - From: Darren Garrison [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, August 13, 2008 11:08 AM Subject: [meteorite-list] Here we go again Okay-- here's my question-- could an impact that leaves no crater cause global (or large-fraction-of-the-global) forest fires? My idea of what causes firest fires in large impacts-- like Chixalub (sp? too lazy to look it up this morning) is molten splash launched from the-- wait for it-- crater. Impactites and tektites, if you will. http://www.thisiswesternmorningnews.co.uk/news/Comet-strike-end-world-scenario/article-265193-detail/article.html Comet strike would be cataclysmic A DEVASTATING collision between the Earth and a wayward comet which wiped out nearly every living thing across an entire continent will happen again and cost millions of lives, a Westcountry scientist claims. The three-mile wide comet, named Clovis after the fledgling North American civilisation it drove to extinction, exploded in the atmosphere 13,000 years ago with a force of 20 million megatons - larger than a simultaneous blast by all the nuclear weapons in history, says Professor Chris Turney, of the University of Exeter. It left no impact crater but sparked the biggest wildfires in history, which stretched across the continent and suffocated humans and animals with overwhelming amounts of soot and smoke, leaving the few survivors with no vegetation or prey to live on. Fiery debris from the comet also melted huge portions of the ice sheet, which drastically altered the planet's climate. Massive volumes of fresh water found their way into the oceans and changed their currents, plunging the Earth into an Ice Age for 1,000 years. Although NASA is tracking up to 5,000 comets and asteroids throughout the Solar System, of which 700 are over a mile wide, scientists say the vastness of space means many inevitably have not been detected, and only one has to be on a collision course with Earth to cause unprecedented carnage. The theory is the subject of a new TV documentary on the History Channel at 8pm tonight. Speaking on the programme, Prof Turney, professor of physical geography at the University of Exeter, said another large comet would cause unimaginable damage. He said: We're just starting to work out for a fact that comets are far more frequent than we were led to believe. If it just exploded as an air burst, it would fry a city and basically just destroy it. There would not really be much left at all, apart from a bit of rubble. It would be the end of the world scenario for those people. Experts believe the aftermath of such an impact would accelerate global warming and cause the destruction of large areas of coastline around the world as sea levels rose. Prof Turney said the Clovis explosion caused the largest forest fires ever seen. It would have been a very strange place with charcoal and dust everywhere on the surface where these fires had gone through, he said. Prof Turney said it was only pure chance the famous Tunguska Event, a meteorite which exploded above Siberia exactly 100 years ago, destroyed a remote area of forest instead of heavily populated cities like London, Paris or New York. Had it entered the atmosphere a few hours earlier, it would have hit Western Europe, potentially costing millions of lives, he said. If the comet of Tunguska had actually exploded over London, it would have caused widespread devastation. We were just incredibly fortunate that this thing exploded over Siberia. It was a total fluke. The Tunguska meteorite was just 165ft in diameter, compared with the three-mile wide Clovis comet. Clovis archaeological sites across North America show a two-inch carbon mat in the rock dating back 13,000 years, indicating huge amounts of soot in the atmosphere, as well as elements like iridium, which is brought to Earth from space. At the time, much of the continent was covered by forests and vast grasslands, enabling wildfires to spread uncontrollably. Huge shockwaves from the explosion started hurricane-force winds which fanned the flames at incredible speeds across the land. As the soot fell onto the ice sheet, the darker material absorbed more sunlight which melted the ice and forced fresh water into the oceans, sending global temperatures plunging by 5C to 10C. Prehistoric Megastorms: Comet Storm is on the History Channel at 8pm tonight. __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Here we go again...
Gary, I remember receiving a sample of this rock, and my impression was that it is a plutonic rock, probably rich in hornblende. It's unusual shape and the location of find is from glaciation that brought this rock to NH. These odd boulders are called 'erratics'-- rocks out of place by glaciers that were widespread in the north during the last Ice Age. He is convinced that this thing is from Mars, because God revealed it to him. As for the sermon that you most likely will receive, if is is short, probably OK, but be ready for a long eye glazing one... HA ! HA! Steve Schoner/AMS IMCA #4470 -- Gary K. Foote [EMAIL PROTECTED] wrote: Though I hate to admit it, I live in northern New Hampshire. I'll track this thing down and get over there to get some better pics soon. I'll probably have to stand for a sermon first though, not that it would be a bad thing :) Gary http://www.meteorite-dealers.com On 30 Mar 2006 at 15:16, Steve Schoner wrote: See ebay item # 6615436460 Starting bid $20,000,000.00 I remember gettng a chunk of this some years ago, before I fell ill. Meteorite? humm Any care to bid? The seller should trust in God and put it up at $1, and see if any are moved to move it. Steve Schoner/AMS IMCA #4470 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Here we go again...
See ebay item # 6615436460 Starting bid $20,000,000.00 I remember gettng a chunk of this some years ago, before I fell ill. Meteorite? humm Any care to bid? The seller should trust in God and put it up at $1, and see if any are moved to move it. Steve Schoner/AMS IMCA #4470 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Here we go again...
Though I hate to admit it, I live in northern New Hampshire. I'll track this thing down and get over there to get some better pics soon. I'll probably have to stand for a sermon first though, not that it would be a bad thing :) Gary http://www.meteorite-dealers.com On 30 Mar 2006 at 15:16, Steve Schoner wrote: See ebay item # 6615436460 Starting bid $20,000,000.00 I remember gettng a chunk of this some years ago, before I fell ill. Meteorite? humm Any care to bid? The seller should trust in God and put it up at $1, and see if any are moved to move it. Steve Schoner/AMS IMCA #4470 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Here we are
Greetings and salutations all exchanged. Best to all. Bill __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] here we come
Hi all.I look forward to seeing everyone tomorrow.I hope the show is going well.I am really eager to get going and buying.See ya all tomorrow. steve arnold, chicago,tucson bound = Steve R.Arnold, Chicago, IL, 60120 I. M. C. A. MEMBER #6728 Illinois Meteorites website url http://stormbringer60120.tripod.com http://members.ebay.com/aboutme/illinoismeteorites/ __ Do you Yahoo!? All your favorites on one personal page Try My Yahoo! http://my.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Here we go; I hope... Gibeon
If this works.. well even if it doesn't work thanks for the posts trying to help. I am looking to purchase a large Gibeon say 2 to 10 kilos. As most of you know I cut and etch, so the shape does not need to be nice. I am more interested in a price that makes sense for me. Of course if you have one or a suggestion were I might find one, please contact me off list. Thanks to all. [EMAIL PROTECTED] Mike Miller // E-Bay flattoprocks Website // www.meteoritefinder.com __ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
