Which option describes the process of exfoliation?
A) Fractures and cracks are formed when the rock forms by the cooling of lava.
B) Cracks open up parallel to the ground when surface rock expands slightly outward.
C) Bedding in sedimentary rocks causes planar breaks in the rock.
D) Stresses in the crust from plate tectonics cause fractures in many directions.

Question

Quizplus · Accepted Answer

Exfoliation occurs when surface rock expands slightly outward due to the reduction of pressure as overlying material is removed (e.g., through erosion), leading to the formation of cracks parallel to the ground. This process can cause the outer layers of rock to peel away in sheets or slabs.

Which Option Describes the Process of Exfoliation