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The Book Cliffs coal field in Garfield and Mesa counties, Colorado

Erdmann, C. E. (Charles Edgar), 1897-1971 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1934. 1934

A brief review of the geology of the San Juan region of southwestern Colorado

Cross, Whitman, 1854-1949, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1935. 1935

Burial and thermal history of the Paradox Basin, Utah and Colorado, and petroleum potential of the m

Nuccio, Vito F.
Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 1996. 1996

The Carboniferous formations and faunas of Colorado

Girty, George Herbert, 1869-1939, author.
Washington : Department of the Interior, United States Geological Survey, 1903. 1903

The Chinle (Upper Triassic) and Sundance (Upper Jurassic) Formations in north-central Colorado : a d

Pipiringos, G. N. (George Nicholas), 1918- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969. 1969

The climax molybdenum deposit, Colorado

Butler, B. S. (Bert Sylvenus), 1877-1960 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1933. 1933

Economic geology of Gilpin county and adjacent parts of Clear Creek and Boulder counties, Colorado

Bastin, Edson S. (Edson Sunderland), 1878-1953, author.
Washington : Department of the Interior, United States Geological Survey, 1917. 1917

Eocene glacial deposits in southwestern Colorado

Atwood, Wallace Walter, 1872-1949, author.
Washington : Department of the Interior, United States Geological Survey, 1916. 1915

Geochemical, biogeochemical, and sedimentological studies of the Green River formation, Wyoming, Uta

[Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1991. 1991

The geologic story of Colorado's Sangre de Cristo range a description of the rocks and landscapes of

Lindsey, David A.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2010. 2010

Geology and fluorspar deposits, Northgate district, Colorado

Steven, Thomas A. (Thomas August), 1917-2013 author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1960. 1960

Geology and ore deposits near Lake City, Colorado

Irving, J. D. (John Duer), 1874-1918 author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1911. 1911

Geology and ore deposits of the Creede district, Colorado

Emmons, William H. (William Harvey), 1876-1948, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1923. 1923

Geology and ore deposits of the Montezuma Quadrangle, Colorado

Lovering, T. S. (Thomas Seward), 1896-1991.
Washington : United States Department of the Interior, Geological Survey, 1935. 1935

Geology and paleontology of the Raton mesa and other regions in Colorado and New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, United States Geological Survey, 1917. 1917

Geology and underground waters of the Arkansas Valley in eastern Colorado

Darton, Nelson Horatio, 1865-1948, author.
Washington : Department of the Interior, United States Geological Survey, 1906. 1906

Geology of the Littleton quadrangle,Jefferson, Douglas, and Arapahoe dcunties, Colorado

Scott, Glenn R., 1918-2012 author.
Washington, D.C. : Government Printing Office 1962

Geology of the Uravan mineral belt

Fischer, R. P. (Richard Philip), 1910-1991 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1952. 1952

Godiva Rim Member--a new stratigraphic unit of the Green River Formation in southwest Wyoming and no

Roehler, Henry W.
Washington : U.S. G.P.O., 1991. 1991

Holocene alpine soils in gneissic cirque deposits, Colorado Front Range

Birkeland, Peter W., author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987. 1987

Las Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado

Tweto, Ogden, 1912-1983.
[Washington, D.C.] : U.S. Dept. of the Interior, U.S. Geological Survey, 1983. 1983

Oil shale in Northwestern Colorado and adjacent areas

Winchester, Dean E. (Dean Eddy), 1883-1936 author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1916. 1916

On hypersthene-andesite and on triclinic pyroxene in augitic rocks

Cross, Whitman, 1854-1949, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1883. 1883

Ore deposits in the vicinity of the London fault of Colorado

Singewald, Q. D. (Quentin Dreyer), 1902-1987, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1941. 1941

Physiography and quaternary geology of the San Juan Mountains, Colorado

Atwood, Wallace Walter, 1872-1949, author.
Washington : United States Department of the Interior, Geological Survey, 1932. 1932

Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado

Sheridan, Douglas M., 1921- author.
[Reston, Va.] : Department of the Interior, United States Geological Survey, 1984. 1984

Quaternary geology of the Grand and Battlement Mesas Area, Colorado

Yeend, Warren E., 1936- author.
Washington : United States Department of the Interior, Geological Survey, 1969. 1969

Reconnaissance of the Book cliffs coal field between Grand river, Colorado and Sunnyside, Utah

Richardson, G. B. (George Burr), 1872-1949, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1909. 1909

Relation of the Cretaceous formations to the Rocky Mountains in Colorado and New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, United States Geological Survey, 1916. 1915

Ride the Rockies, Crested Butte to Georgetown, June 12-17, 2011, 412 miles, geology highlights.

[Denver, Colo.] : U.S. Department of the Interior, U.S. Geological Survey, 2011. 2011

Stratigraphy and refractory clayrocks of the Dakota group along the northern Front Range, Colorado

Waagé, Karl M., author
Washington, D.C. : United States Department of the Interior, Geological Survey, 1961. 1961

Upper Cretaceous and Tertiary formations of the western part of the San Juan Basin, Colorado and New

Reeside, John B. (John Bernard), 1889-1958, author.
Washington : Department of the Interior, United States Geological Survey, 1924. 1924

Variations in vitrinite reflectance values for the Upper Cretaceous Mesaverde Formation, Southeaster

Nuccio, Vito F., author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1989. 1989

Preliminary geologic map of the northwestern part of the Alamosa 30 X 60 minute quadrangle, Alamosa

Machette, Michael N.
[Reston, Va.?] : U.S. Geological Survey, 2005. 2005

Mineral resources of the American Flats Wilderness Study Area, Ouray and Hinsdale Counties, Colorado

Hon, Ken, author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987. 1987

Geology of the Littleton quadrangle,Jefferson, Douglas, and Arapahoe dcunties, Colorado

Scott, Glenn R., 1918-2012 author.
Washington, D.C. : Government Printing Office 1962

The geologic story of the Aspen region : mines, glaciers and rocks

Bryant, Bruce, 1930- author.
[Reston, Va.] : United States Department of the Interior, U.S. Geological Survey, 1986. 1986

Mineral resources of the Beaver Creek Wilderness Study Area, El Paso, Fremont, and Teller Counties,

Lindsey, David A., author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1986. 1986

The Black Canyon of the Gunnison : today and yesterday

Hansen, Wallace R., 1920-
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1965. 1965