Exfoliation occurs within rocks of uniform structures mainly in arid and semi-arid areas.
-During the day, temperatures are high and the rocks are heated on the surface and the inner part is cooler making the rock surface to expand.
-During the night, temperatures are lower and the rocks will cool and contract on the surface.
-Continued expansion and contraction makes the rock surface to develop cracks which will finally break and peels off in cured sheets, this is exfoliation.
Kavungya answered the question on June 4, 2019 at 12:18
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