TY - RPRT TI - Mechanisms of fracture and friction of crustal rock in simulated geologic environments AU - Barry Kean Atkinson AU - N.J. Price AU - S.M. Dennis AU - P.G. Meredith AU - Duncan MacDonald AU - R.F. Holloway PY - 1981 DO - 10.3133/ofr81277 UR - https://pubs.usgs.gov/publication/ofr81277 ID - ofr81277 ER -