TY - RPRT TI - Patterns and origin of radial dike swarms associated with West Spanish Peak and Dike Mountain, south-central Colorado AU - Ross B. Johnson PY - 1961 DO - 10.1130/0016-7606(1961)72[579:paoord]2.0.co;2 UR - https://pubs.usgs.gov/publication/70220624 ID - 70220624 ER -