Mineral resource potential and geology of the Challis National Forest, Idaho, with a section on salable minerals

Barite nodules in Devonian shale and mudstone of western Virginia

Heavy oil resources of the United States

Summary results of the Glens Falls CUSMAP project, New York, Vermont, and New Hampshire

Mineralogical characterization of the Shelburne Marble and the Salem Limestone; test stones used to study the effects of acid rain

Neodymium isotopic evidence for early Proterozoic units in the Watersmeet gneiss dome, northern Michigan. Temperature-pressure estimates of dynamically recrystallized rocks in the early Proterozoic Mountain shear zone, northeastern Wisconsin

Petrography and geochemistry of early Proterozoic granitoid rocks in Wisconsin magmatic terranes of Penokean Orogen, northern Wisconsin

Archean geology of the northern block of the Ishpeming greenstone belt, Marquette County, Michigan

A regional structural model for gold mineralization in the southern part of the Archean Superior Province, United States

Ammonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming

A petrologic study of the Fox Hills Sandstone, Rock Springs Uplift, Wyoming

Geologic applications of modern aeromagnetic surveys : proceedings of the U.S. Geological Survey Workshop on Geologic Applications of Modern Aeromagnetic Surveys, held January 6-8, 1987, in Lakewood, Colorado

Stratigraphy of the Lower and Middle(?) Triassic Union Wash Formation, east-central California

Gold-bearing skarns

Stratigraphic notes, 1989-90; Four short papers propose changes in stratigraphic nomenclature in Oregon, Vermont, Massachusetts, and southern Pakistan