Geology · Structural Geology
What are exfoliation joints?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1They are formed when erosion removes overlying rocks, reducing compressive load and allowing lateral expansion.
- 2They are formed by the cooling of hot rock masses, particularly lava, expressed as vertical columnar joints.
- 3They are formed during deformation episodes when differential stress is high enough to induce tensile failure.
- 4They are special cases of unloading joints formed parallel to the present land surface in rocks of high compressive strength.✓
Correct answer
They are special cases of unloading joints formed parallel to the present land surface in rocks of high compressive strength.
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