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Saturday, October 13, 2018

Kasrt Topography





Karst topography


Kasrt is a landscape formed from the “dissolution" of soluble rock including limestone dolomite, gypsum and salt etc.  Kasrt features are formed by internal drainage, substance and callapse friggered by development of underline cave. Rainwater become acidic as it come in contact with CO2 in the atmosphere and the soil . Kasrt topography  is a landscape create by groundwater dissolving sedimentary rock . This create landform such as sinkhole, caves, tunnels, natural Bridge and seeps etc .It is a reason where the terrain has been dissolved by chemical weathering of the Bedrock . These are the area which is composed of carbonate rocks.
Groundwater is it typically slightly acidic and react chemically with subsurface Rock especially those ors made up of highly soluble limestone .surface flow in this area are broken by water.



Different type of karst topography
  • On the Surface
      
      Below the Surface  

On the Surface

 The surface. Karst topography area are found in almost every part of the world but most occur in humid environment .Humid climate allow for a greater quantity of flowing water. There are some noticeable difference between humid temperature and humid environment  .The human temperate climate are developed while humid tropical climate are dominated by hiils. Now there we describe some surface features of caste topography
Sinkhole:   These are the rounded 
depression in the landscape. Sinkhole are often collapsed cave and quite deep or they are Shallow holes. It collect surface water running of the surrounding land and runoff goes directly into groundwater. It's also known as Cenote. it is a depression or hole in the ground cause by the some form of collapse of surface layer and some other causes chemical dissolution of carbonate.


Sinkholes can also form when natural water such as rainfall developed on the carbonate rock such as limestone, dolomite. it's create depression and producing sinkholes. Sinkholes also form human activities like mines and salt cavern  storage in the salt Dome.



Spring:   A spring is a any natural situation where water flow from an aquifer to the Earth surface. It is a component of the Hydrosphere. Its natural resource and discharge of groundwater from the rock or soil to the surface. A spring may be result of karst topography where surface water has infiltrate the Earth surface, becoming part of groundwater still other spring are the result of pressure from the underground source in the earth. When it can contact with volcano it known as hot Springs


Natural Bridge:   A natural arch or a natural Bridge is a Rock formation. Most natural arch form as a narrow Bridge by the erosion of Cliff, with the software rock stratum eroding out until the rock shelter. In the other words Bridge that are the remnant collapse cave.


Below the ground
One of the most important features of the cast topography is cave limestone formation associated with large groundwater flow in cast terrains
Cave formation Speleology ( study of caves )
It is a interesting feature of karst topography. Cave are inaugurated cavity in limestone produced by solution and aided by erosion. They form along path of greatest Grand water solution. Cave entrance and terminations can be found in the bottom of dolines(sinkhole).  Cave process can be determined in one of three ways i.e
o   Linear
o   Angular
o   Sinuous /undolate
  Linear is straight linear process with no change in groundwater full stop angular is consisting of sharp almost 90° change in cave path both up and down full stop seniors is a curved path of very smooth change in height
  Belum Cave ( Andhra Pradesh )


The Belum Caves is the largest and longest cave on the

 Indian subcontinent, known

 for its speleothems, such as stalactite and stalagmite formations.



Other structures of caves
For short Notes plz visit 

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