________ are regularly spaced planar fracture sets in rocks that result from: expansional unloading, tectonic forces, or thermal contraction upon cooling (especially igneous rocks).
A)Cracks
B)Faults
C)Fissures
D)Joints

Question

Quizplus · Accepted Answer

Joints are regularly spaced planar fracture sets in rocks that result from various factors such as expansional unloading, tectonic forces, and thermal contraction upon cooling. Cracks and fissures are also fractures in rocks, but they may not necessarily be regularly spaced or planar. Faults, on the other hand, are larger-scale fractures in rocks that result in movement along the fracture plane.

________ Are Regularly Spaced Planar Fracture Sets in Rocks That