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The sand geyser could have happened during the quake of 1886, which left cracks in the nearby tabby walls and laid waste to much of Charleston. It's more likely, though, that it happened 500 years earlier, Talwani said. He will take samples for carbon dating to find out.
Talwani has dug 115 of these trenches around the Lowcountry in the last 25 years. This is his first in the Summerville area. A pattern has emerged. Earthquakes strong enough to cause sand blows, which include the 1886 earthquake, hit the Charleston area about every 500 years.
Originally posted by tsurfer2000h
reply to post by getreadyalready
I went to check out that thread you put up and the video has been deleted. I would like to checked it out. If it would have come back in the search I wouldn't have started this one. I just found this an interesting video of something I have never seen before.