OF-15-12 Geologic Map of the Piney Creek Quadrangle OF-15-12 Geologic Map of the Piney Creek Quadrangle, Arapahoe, Douglas, and Elbert Counties, Colorado
OF-15-01 Geologic Map of the Breeze Mountain Quadrangle OF-15-01 Geologic Map of the Breeze Mountain Quadrangle, Moffat and Routt Counties, Colorado
OF-15-07 Geologic Map of the Paonia Quadrangle OF-15-07 Geologic Map of the Paonia Quadrangle, Delta County, Colorado
OF-15-09 Geologic Map of the North Delta Quadrangle OF-15-09 Geologic Map of the North Delta Quadrangle, Delta County, Colorado
OF-15-05 Geologic Map of the Hayden Quadrangle OF-15-05 Geologic Map of the Hayden Quadrangle, Routt County, Colorado
OF-15-08 Geologic Map of the Lazear Quadrangle OF-15-08 Geologic Map of the Lazear Quadrangle, Delta County, Colorado
OF-15-06 Geologic Map of the Crawford Quadrangle OF-15-06 Geologic Map of the Crawford Quadrangle, Delta and Montrose Counties, Colorado
OF-14-05 Geologic Map of the Corcoran Point Quadrangle OF-14-05 Geologic Map of the Corcoran Point Quadrangle, Mesa County, Colorado
OF-14-07 Geologic Map of the Watkins SE Quadrangle OF-14-07 Geologic Map of the Watkins SE Quadrangle, Arapahoe and Elbert Counties, Colorado
OF-14-15 Geologic Map of the Hotchkiss Quadrangle OF-14-15 Geologic Map of the Hotchkiss Quadrangle, Delta County, Colorado
OF-14-11 Geologic Map of the Rules Hill Quadrangle OF-14-11 Geologic Map of the Rules Hill Quadrangle, La Plata County, Colorado
OF-14-14 Geologic Map of the Cattle Creek Quadrangle OF-14-14 Geologic Map of the Cattle Creek Quadrangle, Garfield County, Colorado