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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

Clay minerals in triassic rocks of the Colorado Plateau

Schultz, Leonard Gene, 1926- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1963. 1963

Correlation papers: the Newark system

Russell, Israel C. (Israel Cook), 1852-1906, author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1892. 1892

Geochemical distribution of some metals in the Moenkopi Formation and related strata, Colorado Plate

Cadigan, Robert Allen, 1918- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1971. 1971

Geology of uranium deposits in Triassic rocks of the Colorado Plateau region

Finch, Warren Irvin, 1924-2014 author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1959. 1959

The Permian and Triassic Seven Devils Group, western Idaho and northeastern Oregon

Vallier, Tracy L. (Tracy Lowell), 1936- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1977. 1977

Permian-Triassic evolution of Tethys and western circum-Pacific

Amsterdam ; New York : Elsevier, 2000. 2000

The potential of breccia pipes in the Mohawk Canyon Area, Hualapai Indian Reservation, Arizona

Wenrich, Karen J., author.
[Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992. 1992

Red beds of the Triassic Chugwater Group, southwestern Powder River Basin, Wyoming

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

Stratigraphy of the State Bridge Formation in the Woody Creek quadrangle, Pitkin and Eagle Counties,

Freeman, Val L., 1926- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1971. 1971

Triassic stratigraphy in the northern part of the Culpeper Basin, Virginia and Maryland

Lee, K. Y. (Kwang-Yuan), 1919-1989 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1977. 1976