Exfoliation is a type of weathering in which curved and concentric sets of joints break away in successive layers.
What is exfoliation?
- Exfoliation is the separation of successive thin shells, or spalls, from massive rock such as granite or basalt.
- It is common in areas with moderate rainfall.
- Individual sheets or plates can range in thickness from a few millimeters to a few meters.
- Exfoliation, according to some geologists, occurs when rocks formed at depth are exposed to the bottom surface.
- However, the fractures are frequently not parallel to the ground surface, and this is interpreted as evidence of another method of formation.
Therefore, exfoliation is a type of weathering in which curved and concentric sets of joints break away in successive layers.
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