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Describe how the following features are formed (i)Rock pedestal (ii)Oasis

      

Describe how the following features are formed
i)Rock pedestal
ii)Oasis

  

Answers


Davis
i)A rock outcrops with alternating hard and soft rocks exist in the desert.
-Wind abrasion attacks the rock outcrop and the soft layers are eroded faster
-With time a rock with weird shape is formed.The feature is known as a rock pedestral

ii)Mechanical weathering attacks and breaks rock into small particles
-Wind deflation blows away the loose unconsolidated material
-This leads to the formation of an irregular hollow
-Chemical weathering deepens the hollow until it reaches the water table
-When water seeps into the hollow an Oasis is formed.
Githiari answered the question on October 30, 2017 at 08:20


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