Mines, Mountain Roads, and Rocks: Geologic Road Logs of the Ouray Area (Ouray County Historical Society Guidebook Series, Guidebook No. 1)

This well-illustrated publication discusses how the northwestern San Juan Mountains of Southwestern Colorado and the rich ore bodies they contain formed and describes the historic mining districts of the area. It provides point-by-point descriptions of the mines, rocks, and other features along the roads and jeep trails that provide access to the mountains. Geologic History and Rock Units: Precambrian, Paleozoic, Cambrian, Ordovician, Silurian Devonian, Mississippian, Pennsylvania, Permian, Mesozoic, Triassic, Jurassic, Cretaceous, Cenozoi,c Tertiary, Quaternary. Emplacement of Ore Bodies: Late Cretaceous, Early Tertiary, Middle Tertiary, Later Tertiary, Quaternary, Recent. Mining Districts of the Ouray Area: Ouray (Uncompahgre), Upper Uncompahgre, Red Mountain, Sneffels - Telluride, Poughkeepsie, Mineral Point, Engineer Mountain, Eureka. Geologic Roadlogs of the Ouray Area: Ouray to Red Mountain Pass, Ouray to Camp Bird, Camp Bird to Yankee Boy Basin, Yankee Boy Road to Governor Basin, Camp Bird Millsite to Imogene Pass, Ouray to Portland Mine, Ironton to Brown Mountain, Red Mountain - Guston Loop, Red Mountain Pass to Ingram Pass, State Bridge to Engineer Pass, Engineer Junction to Animas Forks, North Fork to Mineral Point, Ironton Park to Animas Forks, Placer Gulch - Picayune Gulch.