Broken Ice Dam Blamed For 300-Year Chill

New Scientist ^ | 1-10-2006 | Kurt Kleiner

[Mike Darancette]

How "sudden" is sudden?

The lake may have emptied within months. That's pretty good considering that the lake 11,000 ya that drained into the great lakes then into the Atlantic was larger than all the great lakes put together.

[phoenix0468]

Yes, I agree with this assessment. There were most likely areas that were quite temperate, and probably even tropical at the equator. Or, there is the possibility that the ice age was not even that at all, but a product of the shifting of the earths axis and therefore the location of the polar regions. What if the polar regions of say 100,000 years ago were just a couple hundred miles south (referring to the arctic region of course) of where it is now. It has been determined that the polar regions are in a constant state of flux and the north pole's location is moving towards Russia. Could this explain both continental drift and temperal variations around the world throughout it's history?

[SunkenCiv]

Thanks Blam. A similar bursting ice dam created the Channeled Scablands in the NW US, and a similar burst produced some formations somewhere in the former USSR, I think in central Asia, n of Afghanistan someplace. Also, there was a burst ice dam detected leakin' a lake in n Europe somewhere, into the North Sea, if memory serves. But I was pretty young back then... ;')

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[Interesting Times]

Ping.

[Dustbunny]

Some researchers think the cooling might have been caused by normal fluctuations in solar radiation.

Well dah.

And here I was to blame Bush and our SUV.

[elli1]

Relatively recent research on Ice Age as a global event here:

Glacial Records Depict Ice Age Climate in Synch Worldwide

[phoenix0468]

Which would make my theory absolutely absurd. Well, you know I'm not a geologist, nor am I an anthropologist, so I can really just have a lightly educated opinion on the matter. Thanks for the info!!

[CarolinaGuitarman]

Klingon? Surely that is not a logical conclusion. Fascinating. :)

[To Hell With Poverty]

No, *I* broke the dam!!

[RightWhale]

Albert Einstein was willing to consider that the earth might shift its axis now and then, and even that the crust might slip on the inner core.

[blam]

"Albert Einstein was willing to consider that the earth might shift its axis now and then, and even that the crust might slip on the inner core."

I don't find the idea as foreign as I once did.

[zot]

Thanks for the ping. Just what we were talking about the other day.

It looks like the ice sheet on North America melted from the top, leaving ice walls around the edges, and then broke through the ice walls in several places.

I wonder why the ice sheet on North America melted but the ice sheet on Greenland didn't.

[FreeAtlanta]

Frozen Klingon

[Drammach]

"They say the water broke out to the north rather than down the St Lawrence and Mississippi. Is that what you get from this?"

Like blam said, the biggest (final) flood went north, but prior to the last, there were several other flooding events, some of which flowed southward, some which were "domino" effect floods, ( i.e., glacial lakes emptied into others, then into Lake Aggassiz, then channeled down available outlets..

Here's a good link with history of Lake Agassiz..

Lake Agassiz

( Grew up in North Dakota, proud member, Lake Agassiz Rock Club.. )

[SunkenCiv]

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