Geologic map of the Powder River Basin and surrounding area, Wyoming, Montana, South Dakota, North Dakota, and Nebraska

Map showing free-air gravity anomalies off the western coast of Africa Western Sahara to Senegal (north of 15 north latitude)

Reconnaissance geologic map of the Ridgway Quadrangle, Ouray County, Colorado

Map showing free-air gravity anomalies around the Canary Islands, Spain

Geologic map of the San Andreas Fault in the Parkfield 7.5-minute Quadrangle, Monterey and Fresno counties, California

Geologic map of southern Avawatz Mountains, northeastern Mojave Desert region, San Bernardino County, California

Structure-contour maps on the top of the Mississippian carbonates and on top of the upper Cambrian and lower Ordovician Arbuckle Group, Joplin 1 degree by 2 degrees Quadrangle, Kansas and Missouri

Geologic map of the Texas Creek Quadrangle, Rio Blanco County, Colorado

Map showing distribution of thorium in stream-sediment samples, Richfield 1 degree by 2 degrees Quadrangle, Utah

Map showing distribution of tin in stream-sediment samples, Richfield 1 degree by 2 degrees Quadrangle, Utah

Map showing contours on the top of the Pennsylvanian and Permian Minnelusa Formation and equivalents, Powder River basin, Wyoming and Montana

Geochemistry of sediment samples from the northern part of the Chandler Lake Quadrangle, Alaska

Geologic map of the High Rock Lake Quadrangle, Washoe and Humboldt counties, Nevada

Reconnaissance geologic map of Elkhorn Peak Quadrangle, Bannock and Oneida counties, Idaho

Reconnaissance geologic map of parts of the Twin Peaks and Blanca Peak quadrangles, Alamosa, Costilla, and Huerfano counties, Colorado