OF-03-21 Geologic Map of the Electra Lake 7.5-Minute Quadrangle OF-03-21 Geologic Map of the Electra Lake 7.5-Minute Quadrangle, La Plata County, Colorado
OF-03-06 Geologic Map of Black Forest Quadrangle OF-03-06 Geologic Map of Black Forest Quadrangle, El Paso County, Colorado
OF-03-14 History OF-03-14 History, Geology and Environmental Setting of Selected Mines in the Upper Alamosa River Basin, Rio Grande National Forest, Conejos and Rio Grande Counties, Colorado
OF-03-15 Geologic map of the Taylor Ranch Quadrangle OF-03-15 Geologic map of the Taylor Ranch Quadrangle, Costilla County, Colorado
OF-03-04 Published Faults of the Colorado Front Range (detail) OF-03-04 Published Faults of the Colorado Front Range
OF-03-08 Geologic Map of Falcon NW Quadrangle OF-03-08 Geologic Map of Falcon NW Quadrangle, El Paso County, Colorado
IS-60 Colorado Late Cenozoic Fault and Fold Database and Internet Map Server IS-60 Colorado Late Cenozoic Fault and Fold Database and Internet Map Server
OF-02-01 Geologic Map of the Hermosa Quadrangle OF-02-01 Geologic Map of the Hermosa Quadrangle, La Plata County, Colorado
OF-02-02 Geologic Map of the Elsmere Quadrangle OF-02-02 Geologic Map of the Elsmere Quadrangle, El Paso County, Colorado
OF-02-03 Geologic Map of the Keystone Quadrangle OF-02-03 Geologic Map of the Keystone Quadrangle, Summit County, Colorado
OF-02-04 Geologic Map of the Monument Quadrangle OF-02-04 Geologic Map of the Monument Quadrangle, El Paso County, Colorado
OF-02-05 Geologic Map of the Cheyenne Mountain Quadrangle OF-02-05 Geologic Map of the Cheyenne Mountain Quadrangle, El Paso County, Colorado