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

A gravity study of the northern part of the Arctic National Wildlife Range, Alaska

Neogene stratigraphy and paleontology of southern Almeria Province, Spain; an overview

Stratigraphy and depositional environment of the Dutch Harbor Member of the Unalaska Formation, Unalaska Island, Alaska

Geology of the Karalar-Yesiller area, Northwest Anatolia, Turkey

Mount Belknap and Red Hills calderas and associated rocks, Marysvale volcanic field, west-central Utah

Mineral resources of the Du Noir Addition, Washakie Wilderness, Fremont County, Wyoming, with a section on aeromagnetic survey

Revisions to the Cenozoic stratigraphy of Harney Basin, southeastern Oregon

A study of the Cretaceous-Tertiary unconformity in the Piceance Creek basin, Colorado; the underlying Ohio Creek Formation (Upper Cretaceous) redefined as a member of the Hunter Canyon or Mesaverde Formation

Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1979

Sapphirine in Precambrian rocks associated with stratabound sulfide deposits, Custer County, Colorado

Mineral resources of proposed additions to the Salmon-Trinity Alps Primitive Area, California

Mineral resources of the Big Frog wilderness study area and additions, Polk County, Tennessee and Fannin County, Georgia

Porvenir Formation (new name); and other revisions of nomenclature of Mississippian, Pennsylvanian, and lower Permian rocks, southeastern Sangre de Cristo Mountains, New Mexico

Submersed aquatic plants of the tidal Potomac River