Geologic maps of the Eureka Gulch area, Central City district, Gilpin County, Colorado

These maps are of the historic Eureka Gulch area of the Central City silver district, southern Gilpin County, Colorado. The mapping was done on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission, as part of a study of the Central City and Idaho Springs districts and was designed to furnish geologic data for use in appraising the uranium reserves of the area.