When overlaying rocks are removed from granite that formed deep beneath Earth’s surface, pressure decreases, and the granite cracks into large, curved sheets through a process called
Joints are formed through tensile stress. They are fractures found in rocks that are breaking away from each other but show little to no separation when the rock has not weathered. They become more apparent upon weathering, especially in brittle rocks. They are usually vertical than horizontal when they split rocks into two sections.
