NOVA: Sinkholes—Buried Alive ... Sinkholes & Karst | Page 2 | Emergency Preparedness

NOVA: Sinkholes—Buried Alive ... Sinkholes & Karst

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earthenstead

Central Arkansas

Farm Hand

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1 Feb ’15 - 6:14 pm

KVR said
looks like sandstone and slate

It seems that depending on the composition of the sandstone, it can be a Karst. You could see if Googling the name of your formation + Karst yields any search results to tell you if yours could be Karst.

I just found a great pdf map of Karst for the United States.

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2 Feb ’15 - 9:13 am

Thanks, I'll have to do some more research on this

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19 Mar ’16 - 9:09 am

Holy crap

This giant sinkhole is so vast that it threatens to swallow the bungalow that sits just beside it.

The cavernous hole has emerged in the back garden of the home in Scorrier, Cornwall, and it drops approximately 90m deep to water.

However, experts believe it could be as much as FIVE TIMES deeper and may eventually open up to destroy the nearby property that is fortunately unoccupied.

Since drilling was begun to explore the depths of the mine, half a garage and a patio has already disappeared into the hole.

more https://ca.news.yahoo.com/huge-300ft-sinkhole-opens-just-142821900.html

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