_______are regularly spaced planar fracture sets in rocks that result from: expansional unloading, tectonic forces, or thermal contraction upon cooling (especially igneous rocks).

Question

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Joints are natural fractures or separations in rocks that occur without displacement, often resulting from the processes mentioned such as expansional unloading, tectonic forces, or thermal contraction.

_______Are Regularly Spaced Planar Fracture Sets in Rocks That Result