TY - RPRT TI - Structure associated with rock creep in the Black Hills, South Dakota AU - J.J. Norton AU - J. A. Redden PY - 1960 DO - 10.1130/0016-7606(1960)71[1109:sawrci]2.0.co;2 UR - https://pubs.usgs.gov/publication/70207019 ID - 70207019 ER -