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Subsidence frequently causes major problems in karst terrains, where dissolution of limestone by fluid flow in the subsurface creates voids (i.e., caves).If the roof of a void becomes too weak, it can collapse and the overlying rock and earth will fall into the space, causing subsidence at the surface.
The Red Lake sinkhole in Croatia. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.
May 3, 2003 (collapsed) Former location of the formation in New Hampshire The Old Man of the Mountain , also called the Great Stone Face and the Profile , [ 1 ] [ 2 ] was a series of five granite cliff ledges on Cannon Mountain in Franconia, New Hampshire , United States, that appeared to be the jagged profile of a human face when viewed from ...
The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). [2] Although sometimes described as a crater , the feature is actually a type of sinkhole , as it is formed through subsidence and collapse rather than an explosion or ...
Collapse-related: Sinkhole: a depression formed as a result of the collapse of rocks lying above a hollow. This is common in karst regions. Kettle: a shallow, sediment-filled body of water formed by melting glacial remnants in terminal moraines. [3] Thermokarst hollow: caused by volume loss of the ground as the result of permafrost thawing.
The Aberfan disaster (Welsh: Trychineb Aberfan) was the catastrophic collapse of a colliery spoil tip on 21 October 1966. The tip had been created on a mountain slope above the Welsh village of Aberfan, near Merthyr Tydfil, and overlaid a natural spring.
Collapsed to the ground due to cardiorespiratory arrest during training. Despite ambulances arriving to try to revive him, he was pronounced dead after 40 minutes. [247] 3 December 2022: Erion Kajtazi: 17 Trepça '89: Collapsed to the ground due to cardiorespiratory arrest during a match. [248] 15 February 2023: Arne Espeel 25 Winkel Sport B
Collapsed after a 10-ton truck crossed the bridge, which had a 5-ton limit. Old bridge remains at bottom of river. [33] Heron Road Bridge: Ottawa: Canada 10 August 1966: Concrete road bridge Collapsed during construction due to use of green lumber and the lack of diagonal bracing on the wooden support forms for concrete pour. 9 killed Rebuilt.