Changes

'''Fracture'''—Approximately planar surface along which originally contiguous rocks have broken and separated and along which the relative displacement of originally adjacent points across the fracture is small compared with fracture length.<ref name=ch02r10>Pollard, D., D., Segall, P., 1987, Theoretical displacements add stresses near fractures with applications to fault, joints, veins, dikes, and solution surfaces, in Atkinson, B., K., ed., Fracture Mechanics of Rock: London, Academic Press, p. 277–349.</ref>

'''Fracture'''—Approximately planar surface along which originally contiguous rocks have broken and separated and along which the relative displacement of originally adjacent points across the fracture is small compared with fracture length.<ref name=ch02r10>Pollard, D., D., Segall, P., 1987, Theoretical displacements add stresses near fractures with applications to fault, joints, veins, dikes, and solution surfaces, in Atkinson, B., K., ed., Fracture Mechanics of Rock: London, Academic Press, p. 277–349.</ref>

'''Fracture Reservoir'''—Reservoir in which most of the [[permeability]] and some of the porosity is provided by open fractures.

'''Fracture Reservoir'''—Reservoir in which most of the [[permeability]] and some of the [[porosity]] is provided by open fractures.

'''Fracture Trap'''—Trap in which lateral boundaries of the trap are provided by change from fractured reservoir to unfractured or less fractured rock or by change from open, permeable fractures to cement-filled or narrow-aperture, low-permeability fractures.

'''Fracture Trap'''—Trap in which lateral boundaries of the trap are provided by change from fractured reservoir to unfractured or less fractured rock or by change from open, permeable fractures to cement-filled or narrow-aperture, low-permeability fractures.