Origin, damping, and pattern of development of faults in granite

摘要: Observations of brittle fractures in the granite Massif de la Borne as well other rocks allow us to discuss different hypotheses regarding origin faults. It seems that all faults originate by shear along a preexisting plane which can be an important fracture (joint, former fault) or microflaw (pore, grain boundary). The on gives rise array en echelon cracks makes rock less resistant and permits lengthening fault. We also found arrangement “horsetail” damping movements then propose pattern for development They propagate initiating cracks. are damped horsetails permit, connection relays, creation larger