Shear (geology)
= Shear (geology)
{wiki=Shear_(geology)}
In geology, "shear" refers to a type of stress or deformation that occurs when forces act parallel to a material's surface. It involves the sliding motion of one part of a material or rock relative to another, typically in a horizontal plane. Shear stress is a critical factor in various geologic processes, including faulting, folding, and the flow of rocks within the Earth's crust.