The Lower Cretaceous Figuera Lava and Fajardo Formation in the stratigraphy of northeastern Puerto Rico

Some results of geochemical sampling in McCormick County, South Carolina

Argentian cryptomelane and bromargyrite in volcanic rocks near Silver Cliff, Colorado

Upper Pleistocene pyroclastic-flow deposits and lahars south of Mount St. Helens Volcano, Washington

Mineral resources of the Chiricahua Wilderness area, Cochise County, Arizona, with a section on aeromagnetic interpretation

Pine Creek volcanic assemblage at Mount St. Helens, Washington

Mineral resources of the South Warner Wilderness, Modoc County, California

Stratigraphic and structural relationships of the Brimfield Group in northeast-central Connecticut and adjacent Massachusetts

Influence of rainfall and ancient landslide deposits on recent landslides (1950-71) in urban areas of Contra Costa County, California

Mineral resources of the Eagle Cap Wilderness and adjacent areas, Oregon

Gastineau Channel formation a composite glaciomarine deposit near Juneau, Alaska

Revision of nomenclature of the upper part of the Green River Formation, Piceance Creek Basin, Colorado, and eastern Uinta Basin, Utah

Geologic setting of the Glacier Peak and Mazama ash-bed markers in west-central Montana

Mineral resources of the Teton corridor, Teton County, Wyoming

Mineral resources of the Laramie Peak Study Area, Albany and Converse counties, Wyoming, with a section on aeromagnetic interpretation