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Ice Age Ends Smashingly: Did A Comet Blow Up Over Eastern Canada? (More) (Carolina Bays)
Science News ^ | 6-1-2007 | Sid Perkins

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 ...


TOPICS: News/Current Events
KEYWORDS: canada; catastrophism; clovis; clovisimpact; comet; extinction; godsgravesglyphs; iceage; impact; smashingly
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1 posted on 06/02/2007 3:14:28 PM PDT by blam
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To: SunkenCiv

Catastrophism & GGG Ping.


2 posted on 06/02/2007 3:14:59 PM PDT by blam
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To: Renfield

You probably owe me an apology over the ‘scolding’ you gave me about the Carolina Bays (absolutely) not having a celestial origin.


3 posted on 06/02/2007 3:17:15 PM PDT by blam
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To: blam

Carolina Bays

4 posted on 06/02/2007 3:19:15 PM PDT by blam
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To: blam
Another source for those "round" areas, or "bays" could be simply arctic weather conditions for a long period of time.

As the freeze/thaw cycle does its work, some rocks rise, and other rocks fall through the soil. The net result is a circle of rocks of relatively similar size.

It's a least energy cost pathway sort of mathematical form.

No doubt one of the effects of the comet was to encourage the continuation of the glacial period for another thousand years, and that would have given us more circles ~ many of them quite large.

I've heard that the Carolinas got pretty cold in the Younger Dyrass. My own frontyard got pretty cold then, and even before that time. You can go back something like 600 million years to the "snowball earth" thing, and find out that recurring glaciation at the latitude where Virginia was located at that time probably created the 100,000,000 trillion glacial rocks located in the disaggregated schist just below the surface of the clay.

I even have a recurring salt spring on this lot!

5 posted on 06/02/2007 3:38:54 PM PDT by muawiyah
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To: blam

Carolina Bays

Did Asteroids And Comets Turn The Tides Of Civilization?

6 posted on 06/02/2007 3:39:39 PM PDT by blam
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To: muawiyah

Why are the circles elliptical and oriented in a direction? At Prudhoe Bay there are similar looking features shaped by prevailing wind.


7 posted on 06/02/2007 3:43:23 PM PDT by RightWhale (Repeal the Treaty)
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To: blam

Why would a comet suddenly “explode” just before impact?

further, why would a comet choose to “explode” and leave a layer of soot across N America like one would expect with a full eruption of Yellowstone?

just asking, LOL


8 posted on 06/02/2007 3:44:09 PM PDT by Vn_survivor_67-68
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To: muawiyah
"As the freeze/thaw cycle does its work, some rocks rise, and other rocks fall through the soil. The net result is a circle of rocks of relatively similar size."

I'm familiar with that action...however, it does not produce iridium or diamonds.

"In samples taken from 15 of the features, Howard and his colleagues found iridium-rich magnetic grains and carbon spherules with tiny diamond fragments similar to those found at Clovis archaeological sites."

9 posted on 06/02/2007 3:45:56 PM PDT by blam
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To: Vn_survivor_67-68
"further, why would a comet choose to “explode” and leave a layer of soot across N America like one would expect with a full eruption of Yellowstone?"

When Yellowstone erupts it leaves a six foot deep ash layer as far away as Nebraska. You know, little things like that. (Ahem)

It exploded for the same reason the Tunguska Event did in 1908.

10 posted on 06/02/2007 3:50:19 PM PDT by blam
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To: Vn_survivor_67-68
If the speed, angle of entry and mass of a comet are just right, it'll explode before hitting the ground.  It happens fairly often.
11 posted on 06/02/2007 3:53:22 PM PDT by Psycho_Bunny (If by "amnesty" you mean "Impeachment and removal from office", then I'm all for it.)
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To: blam

Causing genetic bottleneck?


12 posted on 06/02/2007 3:56:34 PM PDT by Domestic Church (AMDG...)
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To: RightWhale
"Why are the circles elliptical and oriented in a direction? At Prudhoe Bay there are similar looking features shaped by prevailing wind."

Go to this map here and 'scoot'over around the Bahamas...I can make out two possibly more suspicious circles in that area that seem to have some alignment to the Carolina Bays.

13 posted on 06/02/2007 4:00:53 PM PDT by blam
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To: blam

We are speaking of the ovals and circles on the coastal plaine, right? With the iridium layer being laid down almost simultaneously with the resumption of the freeze-thaw cycle (on a massive scale), all you’ve done is demonstrate that this was a big comet, not that it ploughed holes in the sand.


14 posted on 06/02/2007 4:02:25 PM PDT by muawiyah
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To: Vn_survivor_67-68

Why would a comet suddenly explode just before impact?

Picture an enormous celestial mudball with mixed densities hitting the pressurized atmosphere.


15 posted on 06/02/2007 4:03:33 PM PDT by Domestic Church (AMDG...)
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To: blam

Hmmm, comet debris over Eastern Canada...space microbes evolve into...Quebec?


16 posted on 06/02/2007 4:10:19 PM PDT by Sender ("America is at that awkward stage..." - Claire Wolfe)
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To: blam
A large comet or asteroid impact in a glacier ice sheet produced the Biblical Great Flood which brought the last Ice Age to an abrupt and sudden end.
17 posted on 06/02/2007 4:10:59 PM PDT by mjp (Live & let live. I don't want to live in Mexico, Marxico, or Muslimico. Statism & high taxes suck.)
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To: blam
Good article. This makes for some interesting research.


It exploded for the same reason the Tunguska Event did in 1908.

Incidentally, there is no truth to the persistent rumor that the Tunguska Event was caused by Darwin Central! Besides operative Tesla was working on something else at the time!

18 posted on 06/02/2007 4:15:52 PM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: blam
COMET/EARTH IMPACT CHRONOLOGY
19 posted on 06/02/2007 4:17:31 PM PDT by mjp (Live & let live. I don't want to live in Mexico, Marxico, or Muslimico. Statism & high taxes suck.)
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To: Domestic Church; muawiyah
"Causing genetic bottleneck?"

Some effect, no doubt.

Professor Bryan Sykes says that the Europeans were driven back to the Ice Age Refuges during the Younger Dryas. Professor Stephan Oppenheimer says that some European populations outside the refuges weathered the YD in place...so, there's some disagreement among experts.

Now, some genetists say that the Sa'ami's (Laplanders) left the refuges early at the end of the Ice Age and were isolated from the larger European population for a long time...I wonder if that isolation wasn't during the YD. The Sa'ami are so unique that they are described as having a Sa'ami Motif.

"It is curious, however, that the mitochondrial DNA of the Samis should differ so distinctly from that of other European peoples. The "Sami motif" which has been identified by researchers - a combination of three specific genetic mutations - is shared by more than one third of all tested Samis, but of all the gene tests conducted throughout the world, the same mutation has occurred in only six other samples, one Finnish and five Karelian."

20 posted on 06/02/2007 4:17:40 PM PDT by blam
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To: mjp
A large comet or asteroid impact in a glacier ice sheet produced the Biblical Great Flood which brought the last Ice Age to an abrupt and sudden end.

Are you serious about this, or was it a tongue-in-cheek post?

21 posted on 06/02/2007 4:25:17 PM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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To: Vn_survivor_67-68

Why would a comet suddenly “explode” just before impact?”

Suicide Comet???


22 posted on 06/02/2007 4:26:46 PM PDT by ridesthemiles
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To: muawiyah
"We are speaking of the ovals and circles on the coastal plaine, right? With the iridium layer being laid down almost simultaneously with the resumption of the freeze-thaw cycle (on a massive scale), all you’ve done is demonstrate that this was a big comet, not that it ploughed holes in the sand."

Damn, that does make sense.

It was J M Adovasio who said that the glacial edge (during the Ice Age) was just north of Meadowcroft that has been dated to at least 16,000 year ago...And, the Topper Site in South Carolina may be as old as 50k. Why would these people hang around in this arctic climate (necessary to create the circles) when they could go to balmy Florida? Maybe it wasn't cold enough there to make the Carolina Bays that way, huh?

23 posted on 06/02/2007 4:29:20 PM PDT by blam
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To: Coyoteman
It would have been one sudden flood and a gigantic rise in sea level...real quick and maybe to fast to outrun on foot? That flood would have survived in the collective memory of humans...probably worldwide.
24 posted on 06/02/2007 4:35:38 PM PDT by blam
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To: ridesthemiles
Re:Why would a comet suddenly “explode” just before impact?”

The earth atmosphere is very thick, when considering the speed of these objects and the energy they are spilling off.

It's reason Engineers use the term: "Breakup upon reentry"

25 posted on 06/02/2007 4:41:29 PM PDT by ChadGore (VISUALIZE 62,041,268 Bush fans. We Vote.)
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To: blam
Interesting comment.

After all, the “collective memory” of Neanderthals (ugly, hulking brutes, some larger than humans, found in caves, underground and “backwoods” resembles the ogres, dwarfs and giants of mythology.

Also: Dinosaur bones, dinosaur tracks, and T Rex and raptor skulls certainly explain the worldwide similarly and descriptions of dragons in all cultures.

26 posted on 06/02/2007 4:43:08 PM PDT by Robert A. Cook, PE (I can only donate monthly, but Hillary's ABBCNNBCBS continue to lie every day!)
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To: RightWhale
Re:

Why are the circles elliptical and oriented in a direction?

Angle of impact.

A 90 degree fall (head on / straight in) makes a perfectly round crater.

A 45 degree angle (glancing blow / side swipe) makes a perfect ellipse.

27 posted on 06/02/2007 4:48:05 PM PDT by ChadGore (VISUALIZE 62,041,268 Bush fans. We Vote.)
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To: Domestic Church

or a hot fudge sundae /obscure


28 posted on 06/02/2007 5:04:25 PM PDT by NonValueAdded (Fred Thompson in 2008 - there is no doubt about it! [GWB has jumped the duck])
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To: ChadGore

I read that the Chixlub meteorite entered at about a 35 degree angle coming from the south. I wouldn’t have wanted to be in North America 65 million years ago when it hit.


29 posted on 06/02/2007 5:07:32 PM PDT by blam
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To: Domestic Church
Causing genetic bottleneck?

That seems like one of the biggest problems with this theory. The genetic evidence does not show all of North America being repopulated from a small group of survivors of a catrastrophic event.

30 posted on 06/02/2007 5:32:02 PM PDT by ModelBreaker
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To: blam
Hmmm ~ could 'splain some whopping huge orthodontist bills ~ could have bought a Lexus.

Large teeth tend to splay out if the upper jaw is "smaller". This results in the lower teeth achieving a crooked alignment.

Best bet is to restrict breeding to those with larger upper jaws.

Prognathism is no guide to jaw size though ~ just to its position vis a vis the skull.

Here's Winston Churchill's denture:

While a student he went to Lapland to run around, eat the food, live the life for something like 6 months! It's worth reading about his health and that of his father to make you wonder if he/they weren't suffering from being forced to eat a Western diet rather than the high iron reindeer and seal for which they might have been designed.

Linnaeus did the same thing on a grant ~ went to Lapland to study plants and animals.

I think you asked if there were any figures on Sa'ami native intelligence ~ depends on who you count as a Sa'ami. Can't find the diminutive Norwegian Sa'ami in Churchill's woodpile, but I suspect he's there ~ his brand of heart trouble with repeated "attacks" is fairly typical of what you can find among those who inherited one of the genes for Scandinavian porphyria. His father's health problems are certainly typical.

31 posted on 06/02/2007 6:25:27 PM PDT by muawiyah
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To: ModelBreaker

The bottleneck only works numerically. A global striation of life depletion with some vast areas completely blanked out of zoological species above a certain weight range.


32 posted on 06/02/2007 7:28:38 PM PDT by Domestic Church (AMDG...)
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Did comet start deadly cold snap?
Canada.com | Monday, May 14, 2007 | Margaret Munro
Posted on 05/16/2007 6:00:33 PM EDT by Mike Darancette
http://www.freerepublic.com/focus/f-news/1834769/posts

Diamonds tell tale of comet that killed off the cavemen
Guardian | 5-20-07 | Robin McKie
Posted on 05/20/2007 7:50:33 PM EDT by Renfield
http://www.freerepublic.com/focus/f-news/1836898/posts

Catastrophic Comet Chilled and Killed Ice Age Beasts (and Clovis people)
Live Science | 05/21/07 | Jeanna Bryner
Posted on 05/22/2007 1:16:48 AM EDT by TigerLikesRooster
http://www.freerepublic.com/focus/f-news/1837610/posts

Oregon Researchers Involved In New Clovis-Age Impact Theory (More)
Eureka Alert
Posted on 05/23/2007 5:30:19 PM EDT by blam
http://www.freerepublic.com/focus/f-news/1838660/posts

Comet May Have Doomed Mammoths
Red Orbit | 5-26-07 | Betsy Mason
Posted on 05/26/2007 9:12:53 AM EDT by Renfield
http://www.freerepublic.com/focus/f-news/1840136/posts


33 posted on 06/02/2007 7:47:13 PM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated May 31, 2007.)
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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,
Simon Warwick-Smith


34 posted on 06/02/2007 7:49:14 PM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated May 31, 2007.)
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To: 75thOVI; AFPhys; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BenLurkin; Berosus; ...
This is the sixth topic about this, but it looks like it's gettin' good, so...
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·

35 posted on 06/02/2007 7:50:41 PM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated May 31, 2007.)
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Thanks Blam.

To all -- please ping me to other topics which are appropriate for the GGG list. Thanks.
Please FREEPMAIL me if you want on or off the
"Gods, Graves, Glyphs" PING list or GGG weekly digest
-- Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.
Gods, Graves, Glyphs (alpha order)

36 posted on 06/02/2007 7:51:12 PM PDT by SunkenCiv (Time heals all wounds, particularly when they're not yours. Profile updated May 31, 2007.)
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To: Vn_survivor_67-68
Why would a comet suddenly “explode” just before impact?

Rapid heating caused by friction with the atmosphere. Very common for "falling rocks".

37 posted on 06/02/2007 8:25:17 PM PDT by GingisK
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To: SunkenCiv

Earth In Upheaval

page 87.

Peculiar elliptical depressions, or “oval craters,” locally called “bays” are thickly scattered over the Carolina coast of the United States and more sparsely over the entire Atlantic coastal plain from southern New Jersey to northeastern Florida. These marshy depressions are numbered in the tens of thousands and, according to the latest estimate, their number may reach half a million. Measurements made on the more prominent ones, seaward from Darlington, show that the larger bays average 2200 feet in length, and in single cases exceed 8000 feet...

(here I go, Google Earth again!)


38 posted on 06/02/2007 9:17:47 PM PDT by Fred Nerks (Fair Dinkum!)
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To: muawiyah

Freeze Thaw cycles typically produce forms that are hexagonal in shape, not elliptical. I can’t say what these elliptical shapes are, but they do not look like anything formed by freeze thaw.


39 posted on 06/03/2007 7:20:51 AM PDT by centurion316 (Democrats - Supporting Al Qaida Worldwide)
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To: ChadGore

Try it. Report back.


40 posted on 06/03/2007 7:21:59 AM PDT by RightWhale (Repeal the Treaty)
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To: centurion316

Ten thousand years of ADDITIONAL weather can do a lot of stuff ~ the circles are known in other places.


41 posted on 06/03/2007 7:40:51 AM PDT by muawiyah
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To: muawiyah

Google Permafrost polygonal forms. Lots of research and literature on this topic, including many locations where these forms are artifacts of earlier climatic conditions. Has anyone published a paper suggesting the the Carolina Bays are permafrost artifacts?


42 posted on 06/03/2007 7:51:14 AM PDT by centurion316 (Democrats - Supporting Al Qaida Worldwide)
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To: centurion316

Your typical circle or oval as found in nature is obviously a “polygon”.


43 posted on 06/03/2007 8:08:12 AM PDT by muawiyah
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To: muawiyah

My backyard and beyond for five miles is pretty much these permafrost hexagons. They are fairly uniform in size, but I would have to guess how big they are. Maybe fifty feet across.


44 posted on 06/03/2007 8:10:45 AM PDT by RightWhale (Repeal the Treaty)
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To: RightWhale

Now, look down the road a couple of centuries to a time when there is no permafrost in the area and hurricanes regularly sweep up the Gulf of Alaska to laywaste Alaskan coastal areas ~ think of what those polygons are going to look like.


45 posted on 06/03/2007 8:16:26 AM PDT by muawiyah
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To: muawiyah

When the permafrost melts the land sinks and fills with water. Then the water fills with vegetation and eventually it becomes dry land again. The formation remains so you can see how it came about. Lots of low grade peat around here. We have examples of all stages of permafrost activity including pingos. Fascinating to watch and it changes fast enough to actually see it happen.


46 posted on 06/03/2007 8:20:57 AM PDT by RightWhale (Repeal the Treaty)
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To: Renfield; blam
You probably owe me an apology over the ‘scolding’ you gave me about the Carolina Bays (absolutely) not having a celestial origin. blam

And me as well, Renfield, for the caustic lecture you gave me about the demise of North American megafauna. I expressed the (to you) heretical notion that they might have suddenly perished by some means other than over-hunting by Clovis tribes.

While this new theory doesn't give any final answers, it lends credence to my long-held hunch that catastrophism or disease played a much greater role than over-hunting.

47 posted on 06/03/2007 8:28:22 AM PDT by Bernard Marx
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To: muawiyah

Benjamin Franklin was in haplogroup ‘V’ (Sa’ami).


48 posted on 06/03/2007 8:33:38 AM PDT by blam
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To: RightWhale; muawiyah

No point in trying to educate muawiyah, he believes what he wants to believe and is not going to be swayed by mere logic, evidence, facts, or anything else for that matter.

I personally think that the Carolina Bays were formed by the Little People, since it is a well known fact that the Irish were here long before Columbus and the Vikings.


49 posted on 06/03/2007 8:53:30 AM PDT by centurion316 (Democrats - Supporting Al Qaida Worldwide)
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To: blam

“...You probably owe me an apology over the ‘scolding’ you gave me about the Carolina Bays (absolutely) not having a celestial origin.....”

No, I don’t. Carolina Bays are NOT of celestial orgin; they are, as we discussed before, deflation basins. Many of the bays predate the 12,900 year age mentioned in the article, and some geologic formations have no bays, while other adjacent formations do.


50 posted on 06/03/2007 9:38:23 AM PDT by Renfield
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