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Scientists find signs of 13,000-year-old extinction event
Chicago Tribune ^ | January 2, 2009 | Robert Mitchum

Posted on 01/01/2009 2:09:17 PM PST by neverdem

Comet may have exploded over planet, causing fires, die-offs, researchers say

A meteorite colliding with the Earth 65 million years ago is considered to be the most likely reason dinosaurs vanished from the planet. Now a team of scientists says it has found new evidence that an object from space caused a similar extinction event only 13,000 years ago.

In an article to be published Friday in the journal Science, researchers present what one author calls the "smoking bullet"—proof that an exploding comet triggered the sudden, thousand-year freeze that killed off mammoths, saber-toothed tigers and other large mammals that used to live in North America.

Working at multiple sites across the continent, researchers found nanodiamonds—microscopic particles thought to be found on comets—in a 13,000-year-old layer of carbon-rich soil.

The authors, led by University of Oregon anthropologist Douglas Kennett, theorize that the comet exploded above the Earth's surface, raining fragments upon North America and starting fires across the continent. That would have ushered in an abrupt global cooling and caused the "megafauna" extinction.

In the layer with the nanodiamonds, fossils of the large mammals are abundant. After that layer, they disappear, said Allen West, an Arizona geophysicist and one of the paper's authors.

"It's extraordinary that tens of millions of animals disappeared synchronously at exactly the time when the diamonds and carbon layer are laid down across the continent," West said.

West said the event also would have affected human populations of the time. Artifacts from the Clovis culture of humans—an early hunter-gatherer society—also disappear after the 13,000-year layer, suggesting they, too, were killed off by the comet or its aftereffects.

Many archeologists remain skeptical of the comet theory, said Daniel Amick, an associate professor of anthropology at Loyola University Chicago who studies the Clovis culture.

"When most archeologists heard...,"

(Excerpt) Read more at chicagotribune.com ...


TOPICS: Culture/Society; News/Current Events
KEYWORDS: catastrophism; clovis; clovisimpact; comet; globalcooling; godsgravesglyphs; impact; megafaunaextinction; nanodiamonds; oldearthspeculation; science
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1 posted on 01/01/2009 2:09:19 PM PST by neverdem
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To: neverdem

Thanks for posting the article.


“The possibility of a comet causing catastrophic climate change and extinction relatively recently in Earth’s long history suggests scientists shouldn’t dismiss the possibility of it happening again, West said.”

One reason the NEAR observatories have been built all over the world.


2 posted on 01/01/2009 2:16:53 PM PST by UCANSEE2 (The Last Boy Scout)
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To: El Gato; Ernest_at_the_Beach; Robert A. Cook, PE; lepton; LadyDoc; jb6; tiamat; PGalt; Dianna; ...
Exposing Obama's Genome - And Oprah Winfrey's, Brad Pitts', and yours

Can aircraft trails affect climate?

Diabetes can slow the brain, study finds

FReepmail me if you want on or off my health and science ping list. Happy New Year!

3 posted on 01/01/2009 2:21:11 PM PST by neverdem (Xin loi minh oi)
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To: UCANSEE2
This was one of the best science stories of the year. It explained the near extinction of the Clovis culture, the elimination of saber toothed tigers and mastadons, the clogging of the St. Lawrence valley with ice (from the break up of the residual icecap in Canada), the Younger Dryas event, and most of all, why there was gold on top of the hills in Southern Indiana (rather than down in the valleys or deep inside the hillsides like it normally is everywhere else on Earth).

Ain't every day you get one like that!

4 posted on 01/01/2009 2:22:49 PM PST by muawiyah
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To: neverdem

Sounds plausible to me.

Something has to explain the posies in the stomachs of the mammoths found in the ice.

And the coal found on the East coast of the US. Like a rumpled rug, the surface of the earth folded in upon itself. The surface, covered in vegetation and thick tree trunks, made the veins of coal we mine today.

Flash fire made it charcoal and then it was buried deep.


5 posted on 01/01/2009 2:24:35 PM PST by Battle Axe (Repent for the coming of the Lord is nigh!)
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To: neverdem

bump for later


6 posted on 01/01/2009 2:26:58 PM PST by randomhero97 ("First you want to kill me, now you want to kiss me. Blow!" - Ash)
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To: neverdem
"When most archeologists heard about it they were somewhat dismissive," Amick said. "We would think, 'How in the world could we have missed this?"

lol...spoken as if they've never missed anything before.

7 posted on 01/01/2009 2:33:25 PM PST by Mr. Mojo
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To: neverdem

Basically, that would mean one impact caused it (Ontario Impact), and one ended it (Quebec Air Blast) 2500 years later...


8 posted on 01/01/2009 2:40:23 PM PST by xcamel (The urge to save humanity is always a false front for the urge to rule it. - H. L. Mencken)
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To: muawiyah
This was one of the best science stories of the year.

Yes. And a whole lot likelier than global warming from SUV's.

9 posted on 01/01/2009 2:41:10 PM PST by UCANSEE2 (The Last Boy Scout)
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To: UCANSEE2
One reason the NEAR observatories have been built all over the world.

We'll probably get just enough warning for a quick trip to the liquor store.

I think that these events happen more often than we'd like to imagine, last one 1908.

10 posted on 01/01/2009 2:41:30 PM PST by Mike Darancette
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To: Mr. Mojo
lol...spoken as if they've never missed anything before.

Hey, we do the best we can. This stuff isn't as easy as it looks!

11 posted on 01/01/2009 2:44:41 PM PST by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: UCANSEE2

If one shows up, I hope Morgan Freeman is president rather than THE ONE.


12 posted on 01/01/2009 2:45:00 PM PST by RobbyS (ECCE homo)
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To: neverdem

So we have Yellowstone, and several other supervolcanoes around the world, Comets, Asteroids, lions tigers and bears oh no, and our prime worry is supposed to be non-existent AGW? LOL!


13 posted on 01/01/2009 2:45:14 PM PST by HerrBlucher
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To: neverdem
... proof that an exploding comet triggered the sudden, thousand-year freeze that killed off mammoths, saber-toothed tigers and other large mammals that used to live in North America.

Exculpatory evidence that my ancestors were not at fault.

14 posted on 01/01/2009 2:52:40 PM PST by RobinOfKingston (Democrats, the party of evil. Republicans, the party of stupid.)
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To: Coyoteman
This one indeed looks like the "smoking bullet" — nanodiamonds and millions of fossils of the large mammals all found in the 13,000 year strata, and only in that layer. Proof, no. But I'd bet on it.
15 posted on 01/01/2009 2:56:49 PM PST by Mr. Mojo
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To: neverdem

Only 20 days left to say “Bush’s Fault!”


16 posted on 01/01/2009 3:00:07 PM PST by ozzymandus
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To: Mr. Mojo
This one indeed looks like the "smoking bullet" — nanodiamonds and millions of fossils of the large mammals all found in the 13,000 year strata, and only in that layer. Proof, no. But I'd bet on it.

I agree, tt does look good. Archaeologists and other scientists have been wondering what reversed the glacial retreat for decades.

17 posted on 01/01/2009 3:01:19 PM PST by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: neverdem

Was it brought in by an SUV? Or did it come on its own? Or did the humans do something that did climate change?


18 posted on 01/01/2009 3:14:52 PM PST by YOUGOTIT (The Greatest Threat to our Security is the Royal 100 Club)
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To: muawiyah; neverdem

Yup.

The early explorers/gold miners in Alaska were amazed to find what has been called “muck”.

Hard pack of mud, plant debris, and bones, mashed together and mixed up like it had gone through a cosmic blender.

More and more evidence to support the theory that there was some kind of cataclysmic event, maybe not worldwide, but a large part of it focused on northern North America, that coincided with the beginning of the end of the last ice age.


19 posted on 01/01/2009 3:15:16 PM PST by djf (< Tagline closed until further notice. Awaiting bailout >)
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To: neverdem
Comet may have exploded over planet, causing fires, die-offs, researchers say

LOL

operative word, "may have"

20 posted on 01/01/2009 3:17:01 PM PST by org.whodat (Conservatives don't vote for Bailouts for Super-Rich Bankers! Republicans do!)
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To: RobinOfKingston
Exculpatory evidence that my ancestors were not at fault.

We can't go that far... It could have been some bad ju-ju ceremonies of your ancestors that attracted the comet in the first place!

21 posted on 01/01/2009 3:21:50 PM PST by PugetSoundSoldier (Indignation over the sting of truth is the defense of the indefensible)
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To: neverdem
I used to think that an extintion level impact was folly. Then, in the early 90's, NASA showed the video of the three massive comet impacts into Jupiter(I think it was Jupiter).

It's happened on this planet and it's clearly happened on other planets in the last 20 years - don't know why we don't think it could happen here in the foreseeable future.

22 posted on 01/01/2009 3:25:27 PM PST by Big_Monkey
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To: ozzymandus
Only 20 days left to say “Bush’s Fault!”

Don't count on it. We will see many articles or discussions with sentences like, "..., the problem that 0bama inherited from Bush's administration,..." or, "... the problem is not new. It is the result of the previous administration's policies...". I suspect at least we'll see those the next four or (God forbid) eight years.

23 posted on 01/01/2009 3:28:16 PM PST by paudio (Conservatism is a word with various meanings. To win, we need unified issue and message.)
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To: neverdem; SunkenCiv
Exploding Asteroid Theory Strengthened By New Evidence Located In Ohio, Indiana
24 posted on 01/01/2009 3:30:01 PM PST by blam
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To: Mr. Mojo

According to the Mayan/Olmec/Aztec calendar (the same calendar adopted by the Aztecs), the last great period of destruction occurred 13,000 years ago, when the Earth was rattled by Earthquakes,volcanic eruptions, and terrible floods: events they blamed on a cosmic calamity, and which they, and other ancient peoples, associated with the Great Serpent, which was associated with Venus.

[PDF] The Meaning of the December 21, 2012 Mayan Calendar End Date
65k - Adobe PDF - View as html
Here’s what happened during the last significant alignment, 13,000 years ago, when the ... 13,000 years ago, and which grew to favor left-brained “male” ...
www.mayamysteryschool.com/pdf files/DirectorMay2006.pdf

2012 The World Ends - BrainMind.com - Rhawn Joseph, Ph.D.
Over a thousand years ago, the Mayan priests calculated the solar year at 365. ... The figure of 13,000 years ago also corresponds to a date which marks the point ...
brainmind.com/MeteorStorm.html - 138k - Cached

And within the prophecies there is mention of a great “recharging light” to our sun.

All just totally coincidental this evening. I just happened to be delving into some of the Mayan Calender stuff and the turning of the new age. The figure 13,000 years ago stuck out like a sore thumb as it is recorded in the Mayan calender. Lots of things seem to correlate including our crossing the axis of the galaxy, even the last thought pole reversal happens in that timeframe.


25 posted on 01/01/2009 3:32:10 PM PST by EBH ( Directive 10-289)
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To: paudio

I know, the RATS and MSM will be blaming Bush for everything that happens for Obama’s entire term, but after Bush leaves office, it won’t matter, it will just be transparent excuse-making.


26 posted on 01/01/2009 3:38:53 PM PST by ozzymandus
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To: neverdem
Artifacts from the Clovis culture of humans...

Were they near Australia?

27 posted on 01/01/2009 3:39:13 PM PST by GOPJ (GM's market value is a third of Bed, Bath and Beyond. Why is GM "too big to fail"? Steyn)
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To: neverdem
The Clovis culture (sometimes referred to as the Llano culture[1]) is a prehistoric Paleoindian culture that first appears in the archaeological record of North America around 11,500 rcbp radiocarbon years ago, at the end of the last glacial period.

Wekipedia

Nevermind - got it...

28 posted on 01/01/2009 3:41:40 PM PST by GOPJ (GM's market value is a third of Bed, Bath and Beyond. Why is GM "too big to fail"? Steyn)
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To: blam
Greater Dryas?
29 posted on 01/01/2009 3:42:29 PM PST by Little Bill (Just a Poor White Person , clinging to God, Guns, and the Constitution)
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To: EBH

http://www.youtube.com/watch?v=S6UDRqYcMhg

Leaked Nasa Nibiru Planet X Doomsday Photos May 2008

Just those fascinating links and connections.


30 posted on 01/01/2009 3:57:42 PM PST by EBH ( Directive 10-289)
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To: blam

Thanks for the link. Happy New Year!


31 posted on 01/01/2009 4:01:04 PM PST by neverdem (Xin loi minh oi)
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To: djf

There were also linguistic studies in North America that suggested that NorthAm languages were a subset of South American languages, due to greater language diversity in the South American continent.
Yet North America was settled first.
This scenario gives another answer. There were lots of people in North America, but many of the North Americans (and their languages) were wiped out 13000 years ago. The surviving South American populations were thus larger as well as over a greater area, allowing their linguistic diversity to continue to increase.

This may also explain why the oldest mitrochondrial DNA on the continent is the Pacific Northwest. Lots of mountains to protect you from the asteroid strike, and ocean food sources that make the land extinctions less likely to make the people extinct.


32 posted on 01/01/2009 4:14:29 PM PST by tbw2 (Freeper sci-fi - "Humanity's Edge" - on amazon.com)
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To: neverdem

bump


33 posted on 01/01/2009 4:23:56 PM PST by indthkr
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To: blam

I note how this possible event has been linked to the Carolina Bays.

Some of those Bays are lakes. Has anyone ever done any core sample drillings of the lake bottoms?

Should be a simple matter to figure out almost EXACTLY how old they are.


34 posted on 01/01/2009 4:27:57 PM PST by djf (< Tagline closed until further notice. Awaiting bailout >)
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To: All
Meteors may have caused global cooling, researchers say

International Herald Tribune(NY Times)

35 posted on 01/01/2009 4:31:15 PM PST by neverdem (Xin loi minh oi)
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To: EBH

Thanks for the link. Happy New Year!


36 posted on 01/01/2009 4:33:43 PM PST by neverdem (Xin loi minh oi)
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The Cycle of Cosmic Catastrophes: Flood, Fire, and Famine in the History of Civilization The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization

by Richard Firestone,
Allen West, and
Simon Warwick-Smith


37 posted on 01/01/2009 4:33:53 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
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To: blam; 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BBell; ...
Thanks blam!
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·
 

38 posted on 01/01/2009 4:34:26 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
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To: Coyoteman
Hey, we do the best we can. This stuff isn't as easy as it looks!

Don't get too worked up about it. It's just a theory, like Darwin's. ;-)

39 posted on 01/01/2009 4:36:17 PM PST by Does so (Got Pirates? Use von Luckner's SEEADLER technique—perfected in WW1. The original Q-ship!)
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What killed the mammoths and other behemoths?
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40 posted on 01/01/2009 4:36:39 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; 31R1O; ...

· join list or digest · view topics · view or post blog · bookmark · post a topic ·

 
Gods
Graves
Glyphs
Thanks neverdem for the topic (which is an update), and thanks to Blam for the pings.

To all -- please ping me to other topics which are appropriate for the GGG list.
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41 posted on 01/01/2009 4:38:15 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
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To: neverdem
"Thanks for the link. Happy New Year!"

Happy New Year to you too.

42 posted on 01/01/2009 4:41:49 PM PST by blam
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To: djf
"Some of those Bays are lakes. Has anyone ever done any core sample drillings of the lake bottoms?"

See the links in post #40.

43 posted on 01/01/2009 4:44:45 PM PST by blam
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To: ozzymandus
>"Only 20 days left to say “Bush’s Fault!”

Ya thunk? Why stop just because he's not there?

44 posted on 01/01/2009 4:50:19 PM PST by rawcatslyentist (Proud non productive worker under directive 10-289)
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To: Does so
Don't get too worked up about it. It's just a theory, like Darwin's. ;-)

Science is all about theories. There is no higher level of explanation. As Heinlein noted:

Piling up facts is not science--science is facts-and-theories. Facts alone have limited use and lack meaning: a valid theory organizes them into far greater usefulness.

A powerful theory not only embraces old facts and new but also discloses unsuspected facts [1980:480-182].

And don't cite "laws." Theories explain laws.

I am rather sensitive to this terminology because the "its just a theory" nonsense is generally promoted by those who have little interest in science, but a lot of interest in pushing their particular religious belief at the expense of science. If you do not fall into this category, then my apologies in advance.

But this particular archaeological discovery may just be the "smoking gun" to explain a lot of different things that have puzzled us for decades.

45 posted on 01/01/2009 5:25:27 PM PST by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: neverdem

bump


46 posted on 01/01/2009 5:30:35 PM PST by Captain Beyond (The Hammer of the gods! (Just a cool line from a Led Zep song))
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To: EBH

Y2K all over again!


47 posted on 01/01/2009 7:03:21 PM PST by dominic flandry
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To: djf; SunkenCiv; blam; Coyoteman; All

The Carolina Bays are discussed in considerable detail in Fireston’s fascinating book shown in Comment #37. The article also mentions signs of the comet having exploded over the Chicago area. Actually, Firestone’s book shows a view of Lake Michigan indicating that two objects may have crashed into the lake. After looking closely it seemed to me that there would have been 3 objects with the smaller one between to two larger ones. Look at a regular map and you can see the rounded edges. The alignment of many of the eliptical bays converge on that general area as well.

Happy New Year to all my fellow scientifically interested FReepers. It is a fascinating world out there.


48 posted on 01/01/2009 7:16:31 PM PST by gleeaikin
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To: neverdem
Researchers found the highest concentration of nanodiamonds at a site in eastern Michigan, which suggests the comet may have exploded somewhere over the Great Lakes, West said.

"We think that Chicago might well have been very near ground zero," West said. "If you'd been in Chicago back in that time, it would've been one very bad day."


13,000 years too soon.
49 posted on 01/01/2009 7:24:26 PM PST by aruanan
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To: neverdem
IIRC, some investigators believe that there is a relationship between this microdiamond/carbon layer event and the formation of the

"Carolina Bays"

50 posted on 01/01/2009 7:28:30 PM PST by TXnMA ("Allah": Satan's current alias...!!)
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