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Geological Engineering · Q78

Geomorphology and Surface Processes

Engineering and GATE · Geological Engineering · question 78

Q78

What causes exfoliation in rocks?

A.
Repeated glaciation
B.
Salt crystal growth
C.
Pressure release from erosion
Answer
D.
Biotic decay

Answer: Option C

Solution

Answer: Option C
Solution:
Exfoliation occurs when overlying rock is removed (unloading), reducing pressure and causing layers to peel off like onion skins.Typical in granitic terrains.