Posted on 06/02/2007 3:14:23 PM PDT by blam
Ice Age Ends Smashingly: Did a comet blow up over eastern Canada?
Sid Perkins
Evidence unearthed at more than two dozen sites across North America suggests that an extraterrestrial object exploded in Earth's atmosphere above Canada about 12,900 years ago, just as the climate was warming at the end of the last ice age. The explosion sparked immense wildfires, devastated North America's ecosystems and prehistoric cultures, and triggered a millennium-long cold spell, scientists say.
IT'S IN THERE. A layer of carbon-rich sediment (arrow) found here at Murray Springs, Ariz., and elsewhere across North America, provides evidence that an extraterrestrial object blew up over Canada 12,900 years ago. The hallmarks include lumps of glasslike carbon (top), carbon spherules (middle, in cross section), and magnetic grains rich in iridium (bottom). West; (middle inset): Cannon Microprobe
At sites stretching from California to the Carolinas and as far north as Alberta and Saskatchewan—many of which were home to prehistoric people of the Clovis culture—researchers have long noted an enigmatic layer of carbon-rich sediment that was laid down nearly 13 millennia ago. "Clovis artifacts are never found above this black mat," says Allen West, a geophysicist with Geoscience Consulting in Dewey, Ariz. The layer, typically a few millimeters thick, lies between older, underlying strata that are chock-full of mammoth bones and younger, fossilfree sediments immediately above, he notes.
New analyses of samples taken from 26 of those sites reveal several hallmarks of an extraterrestrial object's impact, West and his colleagues reported at the spring meeting of the American Geophysical Union in Acapulco, Mexico.
Samples from the base of the black mat yield most of the clues to its extraterrestrial origin, says Richard B. Firestone, West's coworker and a nuclear physicist at the Lawrence Berkeley (Calif.)
(Excerpt) Read more at sciencenews.org ...
Here is a brief but interesting echange on this subject.
The Chixculub meteor came in at about a 35 degree angle and has a distorted crater.
For the same reason an egg will explode if you put it in the microwave?...............
well then......we’d best start building tesla towers, yes?
(this thread is so old I had to go to post #1 to remember what it was about, LOL)
Ummm, I thought Winston Churchill’s Dad’s “health problems” had more than a little to do with tertiary syphillis.
He had other problems long before syphilis if, in fact, that’s what it was.
So many theories, so little proof. So this is why the flash-frozen mammoths have fresh grass in their stomachs?
Ping.
I have been watching a 5 part series called ~North American Comet Catastrophe 10,900 BC over on youtube this morning. Firestone and West are on the panel, really interesting viewing.
http://www.youtube.com/watch?v=f1GCgOI3B1o
BTTT for the obscure Lucifers Hammer reference
Anybody who hasn't read "Lucifer's Hammer" is hopelessly out of touch, anyway. ;)
I just completed reading the book below on this subject (at SunkenCiv's urging), it was a very good read and I recommend it.
The Cycle of Cosmic Catastrophes: How a Stone-Age Comet Changed the Course of World Culture
I still plan to track down a book about supernovae explosions as the cause of mass extinctions, it came out sometime in the past ten years (I think). This isn’t the LaViolette stuff either (PL’s claim was something called a galactic core explosion I think).
cosmic ray bombardment:
Astronomy Picture of the Day 9-12-02
NASA | 9-12-02 | Robert Nemiroff and Jerry Bonnell
Posted on 09/12/2002 1:37:17 AM EDT by petuniasevan
http://www.freerepublic.com/focus/f-chat/749126/posts
Bright star: Four centuries later, fresh insight into historic find
Yahoo (AFP) | Wed Oct 27, 2:00 PM ET
Posted on 10/30/2004 3:09:45 AM EDT by Thinkin’ Gal
http://www.freerepublic.com/focus/f-news/1262401/posts
BUMP!
:’) Topic’s from June.
http://www.freerepublic.com/focus/f-news/1843831/posts?page=10#10
http://www.freerepublic.com/focus/f-news/1843831/posts?page=11#11
http://www.freerepublic.com/focus/f-news/1843831/posts?page=15#15
http://www.freerepublic.com/focus/f-news/1843831/posts?page=37#37
http://www.freerepublic.com/focus/f-news/1843831/posts?page=52#52
http://www.freerepublic.com/focus/f-news/1843831/posts?page=83#83
“I would guess no because of the heat.”
Now that I have read “The Cycle of Cosmic Catstrophes”, I think they agree with my posted guess. Very large chunks of ice blown out of the glaciers by very large boloid.
Yes, me too now.
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