[blam]

I think this is about the same area and time that what is believed to have been the largest earthquake ever occurred.

Weight redistribution from the Ice Age melt probably caused both.

[TheRobb7]

"Dating a massive undersea slide"

Reminds me of a blind date 20 years ago...........

[expatpat]

Where did the earthquake occur?

[RightWhale]

Crustal rebound. The same thing will save us when Antarctica and Greenland lose their icecaps.

[rwgal]

Not to be a fatalist, but when it happens again, and it will, the world will be "surprised" ...mother nature has a way of doing things her way....

Meadow Muffin

[Coyoteman]

Interesting post, Blam.

Thanks.

[blam]

Catastrophism Ping.

Study Sees North Sea Tsunami Risk

It was a catastrophe of apocalyptic proportions. An earthquake shook Norway's coast between Bergen and Trondheim about 8,150 years ago. The tremors ripped pieces of land the size of Iceland from shallow water and sent them crashing into the deep sea. Like a stone thrown into a pond, the landslide produced ripples of waves that spread at the speed of a train -- powerful tsunamis racing across the North Sea. Along the beaches of Scotland the waves were up to six meters (20 feet) high. Geologists have discovered a ravaged Stone-Age site there.

[Dad yer funny]

bookmark ping-a-ling , & THANKS blam

[Redleg Duke]

Bush's fault! Halliburton did it under orders from Cheney!

[SunkenCiv]

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[SunkenCiv]

Thanks Blam.

To all -- please ping me to other topics which are appropriate for the GGG list. Thanks.

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[michaelbix]

I probably should post a "comment" but this tsunami was caused by a combination of factors: 1 - since the last Ice Age the oceans have risen 150 metres (450')... yes... and toward the end of that Atlantic Ocean water finally made it over a ridge that separated the warm Atlantic from the cold Arctic water off the coast of Norway 2 - much of the extended coast of Norway, now underwater as part of its "continental shelf," was frozen tundra and when it was submerged it started to thaw. The warm Atlantic water hitting it accelerated that thaw 3 - frozen in the tundra (just like in Siberia and northern Canada now) were large amounts of methane clathrate, a form of methane that can expand with explosive rapidity... like "burps" 4 - laid over a bed of methane clathrate was a huge post-glacial deposit of gravel, mud and stone... perched at the edge of the deep ocean.

A big methane "burp" somehow got this huge mass moving downhill, and the largest landslide in known history spread down the slope and across the deep ocean floor - displacing an enomous amount of water and causing tsunamis in all the adjacent coastal areas.

Read all about it (and see the video) at http://www.fettes.com/Shetland/tsunami%20deposits.htm