At head of title: Department of the Interior, United States Geological Survey. As of 11/02/2016, GPO could not validate the distribution status of this title for the FDLP. Plate 1: Geologic map and sections of the Clark Fork quadrangle, Idaho-Montana / Geology by J.E. Harrison and D.A. Jobin, 1957-60. Base map by Topographic Division U.S. Geological Survey. "A descriptive report with emphasis on structure and on stratigraphy of the Belt series." Includes bibliographical references (pages 37-38).

Abstract -- Introduction -- Geologic history -- Description of rock types -- Metasedimentary rocks -- Belt series -- Prichard formation -- Quartzite, siltite, and argillite member -- Laminated argillite member -- Argillite and siltite member -- Burke formation -- Revett quartzite -- St. Regis formation -- Wallace formation -- Lower calcareous member -- Argillite member -- Argillite, siltite, and limestone member -- Upper calcareous member -- Laminated argillite and siltite member -- Striped Peak formation -- Argillite, siltite, and quartzite member -- Dolomite member -- Laminated argillite and siltite member -- Quartzite member -- Libby formation -- Laminated argillite and siltite member -- Calcareous member -- Argillite, siltite, and dolomite member -- Surficial deposits -- Glacial deposits -- Alluvial deposits -- Igneous rocks -- Quartz diorite -- Granodiorite and related rocks -- Diabase -- Metamorphism of the Belt series -- Structure -- Folds -- Faults -- Hope fault -- Block faults -- Mineralized faults -- Joints -- Economic geology -- Metallic deposits -- Nonmetallic deposits. A descriptive report with emphasis on structure and on stratigraphy of the Belt series.