A report summarizing the geology of Crooks Gap, Fremont County, Wyoming, as related to Uranium Resources

From introduction: This is one of a series of three reports on airborne radioactivity surveys in the United States. The reports contain the 185 airborne anomaly maps issued by the U. S. Atomic Energy Commission as a result of the AEC's aerial surveying program conducted from March 1952 to June 1956; two ground reconnaissance maps of Utah also are included. Most of the reconnaissance was done in the western United States.

The following report is an evaluation of mineral potential of the Stratified Primitive Area in Wyoming.

A report about two new geologic formations in Wyoming. The Foote Creek Formation consists of beds of fine-grained sandstone with shale, siltstone, and coal beds. The Dutton Creek Formation consists of beds of coarse-grained locally conglomeratic sandstone.

A report about the Jefferson Formation and the Three Forks Formation. Both of them constitute a sequence of dominantly marine rocks.

A report about the Powder River Basin in northeastern Wyoming which is a physiographic unit bounded on the west by the Bighorn Mountains. There are sedimentary rocks which range in age from Cambrian to Oligocene.

This report follows the geological field studies of uranium deposits near Pumpkin Buttes in the central part of the Powder River Basin, Wyoming, and eventually moving south of the basin.

A report about sandstone in the black hills of Wyoming and South Dakota. It discusses the nonopaque heavy minerals found within it.

The following report describes the examinations of the nonopague heavy minerals in sandstone found in the Black Hills in northeastern Wyoming and western South Dakota. The studies were made to determine if differences in the shapes of the grains and proportions of minerals are sufficiently distinctive to be used in subdividing and correlating formations.

Report issued by the Bureau of Mines discussing the mining practices at Gas Hills, Wyoming. As stated in the abstract, "this report, based on information made available by four uranium-producing companies, describes the geology, exploration, open-pit development and mining, and shaft sinking in the Gas Hills uranium district of Wyoming" (p. 1). This report includes tables, maps, illustrations, and photographs.

A report about 100 square miles of metamorphosed Precambrian sedimentary and volcanic rocks in Wyoming. The district in which they are located is known for its gold, but iron deposits of high economic potential are being developed in the northwest part.

This report studies the Precambrian iron deposits and major geological features near Atlantic City, Fremont County, Wyoming.

From introduction: This report on the geology of the Powder River Basin is one of a series of reports by the Geological Survey on sedimentary basins in the United States.

From abstract: The northern Black Hills bentonite mining district includes parts of Crook County, Wyo., Carter County, Mont., and Butte County, S. Dak. Within this district, many beds of bentonite occur interspersed with sedimentary strata of Cretaceous age that have an average total thickness of about 3,000 feet and consist chiefly of marine shale, marl, and argillaceous sandstone. The bentonite beds occur in formations ranging upward from the Newcastle sandstone to the lower part of the Mitten black shale member of the Pierre shale. Tertiary (?) and Quaternary deposits of gravel, sand, and silt are present on extensive terraces, and deposits of such materials also extend along stream courses in all parts of the district.

Introduction: "A program of geological mapping and exploratory core drilling was carried out from 1951 to 1953 by the U.S. Geological Survey on behalf of the U.S. Atomic Energy Commission to determine the areal distribution, thickness, and uranium content of coal in the eastern part of the Red Desert area, Sweetwater County, Wyo. Results of the field an laboratory studies of the distribution of uranium and other trace metals and hypotheses concerning the origin and mode of emplacement of the trace elements in the coal are presented in this report."

A report which includes 200,000 square miles in the southern part of the Williston basin of North Dakota, South Dakota, and Montana. The Devonian rocks consist mostly of marine carbonate, evaporite, and shale beds.

This report studies Devonian rocks in an approximately 200,000-square-mile area between Williston Basin, central Montana, and north-central Wyoming.

From introduction: Geologic mapping of the Carlile quadrangle, which includes one of several uranium-producing areas in northeastern Wyoming, was undertaken to provide a detailed geologic map that could be used as an aid to further exploration for uranium deposits; to study in detail the known uranium deposits to determine whether or not there are any relations among structure, stratigraphy, lithology, and uranium deposits; and to outline, insofar as possible, areas favorable for more detailed exploration for uranium.

A report which presents the geologic results of an exploration program in the Lost Creek area by the U.S. Geological Survey in 1951-52 on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

This report presents the geologic results of an exploration program in the Lost Creek schroeckingerite deposits in northern Sweetwater County, Wyoming.

Report issued by the U.S. Bureau of Mines discussing magnetite and ilmenite mining methods and practices. As stated in the introduction, "this report summarizes the exploration of the titaniferous iron deposits in the Iron Mountain area, Albany County, Wyo." (p. 1). This report includes maps, tables, illustrations, and photographs.

Report issued by the Bureau of Mines over heavy sandstone deposits in the Four-State area of the U.S. Details of the geology and an estimate of resources are presented. This report includes tables, maps, and illustrations.

A paper about Split Rock formation of Miocene age in central Wyoming. It contains mostly consolidated quartz sandstone with lesser amounts of tuff, pumicite, limestone, and claystone.

This report follows fieldwork intended to determine distribution of uranium in coal in the central part of the Great Divide Basin, Wyoming, that was done between the summers of 1951-53.