Q. 5 E5.0( 2 Votes )

Give reasons.

In the limestone region, surface drainage is rarely found.

Answer :

In regions rich in limestone, the erosive actions of the underground water with the limestone may result in the development of karst regions. The underground water is the major reason for the formation of the karst topography. It is formed due to the dissolution of limestone, dolomite and gypsum with the groundwater. It is created because of the gradation, erosion and deposition of these soluble rocks with the groundwater. Thus the surface run-off is much lesser in the regions.

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