Provides data about the geologic hazards in the Crested Butte-Gunnison Area, Gunnison County. Includes general geology and physiography; geology and analysis of landslides-earthflows, unstable slopes, rockfalls, mudflow-debris fans, high water table. Includes notes on avalanches, seismicity, expansive soil, subsidence, radioactivity, design of hazards maps, and mapping techniques. 34 pages. 20 figures. 9 plates (1:24,000).