Sink Holes : Scary, Deep, Huge, Naturally Formed Holes In Ground

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 Sink Holes: Scary, Deep, Huge, Naturally Formed Gapping Holes In Ground  

   Revealing the reason for its formation, types and the regions most affected.



Sinkholes, also known as shake-holes, swallow-holes, are pits in the ground that form in the areas where water gathers without external damage. As the water drains below ground, it can dissolve subterranean caverns, particularly in the areas where the bedrock contains water-soluble evaporate rocks such as salt, gypsum or of carbonate rocks such as limestone or dolomite.

Usually Sinkholes formation is gradual with time, but sometimes there is sudden formation of these holes which will swallow the houses, roads and cars in the urban area. The holes can sometimes measure at just a few feet, or they can be large enough to swallow an entire structure. The reason for their formation may be natural or because of humans.

 

Types

  • Cover Collapse Sinkholes: This type of sinkhole occurs when a solution cavity occurs on a limestone to such a size that the underlying cover material can no longer sustain its own weight. The collapse can be catastrophic and very abrupt.
  • Cover Subsidence Sinkholes: It occurs when the cover material is very incohesive and permeable. The individual grains of sand move downward in sequence to replace grains that have already moved downward to replace dissolved limestone.
  • Solution Sinkholes: These sinkholes occur in areas where limestone is exposed from the surface or covered by thin layers of soil or sand. This results in gradual downward movement of the land surface and the development of a depression that collects increasing amounts of surface runoffs.

 


 

Regions 

The Sinkholes normally occur in the countries like China, Mexico and Japan while 20% of USA is prone to them. Also, the Guatemala City is no stranger for Sinkholes. Elsewhere in the world you'll find the Sinkholes in Khammouan Mountains of Lamo and Mamo plateau in Papua New Guinea. Geologists have found the largest known Sinkholes in Venezuela, which is in sandstone form. In Yucatan Peninsula and Tamaulipas, there is deepest water-filled Sinkhole called as Zacaton, which is 1112 feet deep. 

[Tip: Beware and be cautious while travelling to these places, as there are high chances the Sinkholes will swallow you in these regions.]

 

Signs/Symptoms/Warnings

Structural cracks on wall or floor of buildings, formation of small ponds after rains, falling or slumping of trees and fence posts, damaged electrical utility lines, and so on. 

 

 

Hope you found this article Informative. Do share your thoughts in the comment box.

 


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