Russia -1

Joined
Dec 13, 2002
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6,159
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buggerville nj
 
 
 
Anyone see that news article about the lake in Russia just vanishing into a sink hole? Weird stuff man.
 
Joined
Mar 30, 2005
Messages
473
Location
Mt. Pleasant, SC
""I am thinking, well, America has finally got to us," said one old woman, as she sat on the ground outside her house."
WTF does that mean? :confused: We've gotten the reputation of stealing lakes now? Kookie Russian.
 
Joined
Dec 13, 2004
Messages
768
Location
Red Triangle
Calcium carbonate. Limestone carverns exist all over the place. Wob is right. Sinkholes pop up all over, swallowing entire neighborhoods and streets, so it's not surprising to read that a lake disappeared.
 
Joined
Dec 13, 2004
Messages
768
Location
Red Triangle
1.) Picture with the ladder
This sinkhole in Logan County, KY is 70 feet deep. It opened in 1997 after heavy rains. The geology here is similar to the site chosen for the Kentucky TriModal Transpark.
Photo by Donnie Davis

2.) Picture with excavator in the hole
The $1 million repair of the Dishman Lane sinkhole collapse in Bowling Green, KY required removal of loose material down to bedrock. Note the disection of the rock above the cave by groundwater. The cave passage is 30 feet wide x 20 feet high, with a river in the bottom
Photo by Guy Briggs, 8/7/02
 
Joined
Dec 13, 2004
Messages
768
Location
Red Triangle
Sinkholes are natural phenomena in the landscape that covers the majority of the Barren River Area. These sinkholes have a variety of characteristics. The actual openings into subterranean caves may be large or small, and the area that they drain may encompass a few hundred square feet to many acres (Crawford, 1988). The topography of the land surrounding a sinkhole can be gentle and gradual slopes or steep and rugged terrain. Each sinkhole has unique characteristics.


Figure 10-1. Cross-sectional view of sinkholes.
(Source: N. Crawford, Karst Landscape Analysis: Warren County Comprehensive Plan, 1989)
The karst landscape associated with sinkholes is formed on carbonic rock (i.e., limestone and dolomite) as groundwater dissolves and enlarges subterranean openings. Openings start as small, hardly noticeable cracks in the rock. The groundwater seeping through the cracks is mildly acidic, giving it solvent power (Reeder, 1988). As the openings grow in size, they will reach closer to the ground surface. When they reach the surface, they open as sinkholes (Figure 10-1).

Sinkholes collect stormwater runoff and serve as injection points where runoff is transferred into underground aquifers. Like streams and rivers, sinkholes can flood when heavy rainfall occurs. Also, heavy rainfall or general changes in the volume of water drained into a sinkhole, perhaps resulting from urban land development in the area, can contribute to sinkholes collapsing. Sinkhole flooding and collapse can cause significant, localized property damage. Property owners, developers, and planners should be educated about and prepared to address the threats associated with sinkholes.
 

concretejungle

SILVER Star
Joined
Oct 27, 2003
Messages
9,615
Location
North Cadillac
 
 
 
I'm surprised those geologist are standing that close to the edge of such a verticle cliff of unconfined soil. That thing could give way.
 
Joined
Mar 10, 2005
Messages
53
Location
Harvard, IL USA
Happened in Louisiana once, too. By accident.

Lake Peigneur, near New Iberia, Louisiana.

A team from Texaco was drilling for oil in a lake, and accidentally drilled into a salt mine 1600 feet under the surface of the lake....

the lake began draining into the salt mine. (Miraculously all the miners escaped unharmed!)

As it drained, the hole got bigger and bigger and bigger.... Sucked entire barges under and everything. eventually the whole lake was drained and the river that ran from the lake to the Gulf of Mexico reversed flow and refilled the lake with brackish water.

http://members.tripod.com/earthdude1/texaco/texaco.html

Steve
 
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