This report provides results from a preliminary study to determine rock types and alteration products that are responsible for an observed abundance of radioactive gas at the Trinity Gold Mine in Utah. It includes an overview of the study and the location, description of the methods and general statements, details about the structure, petrography and mineralogy, and a discussion of findings.

From operational program: This final report includes a general geologic description of the area, including descriptions of the various geologic units and correlates the airborne data to the geologic units as provided by the geologic maps. Also included is a frequency distribution study of the data as a function of the geologic units encountered over the NTMS area including the tie line data.

From summary: The purpose of this study was to delineate favorable areas for uranium resources in northeastern Washington and northern Idaho by identifying granitic rocks with relatively large amounts of uranium and (or) thorium. Results are based on analyses of 344 rock samples; 230 were collected during this study, and data for the rest were taken from previous publications.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Spokane quadrangle including the survey description, specifications, data processing methods, interpretation methods, and regional geologic review.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Spokane quadrangle including maps documenting geophysical and geochemical data, as well as magnetic, ancillary and radiometric data.

From introduction: This report describes work done in the Pueblo, Colorado, National Topographic Map Series (NTMS) quadrangle (1:250 000-scale) by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Baltimore quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Richmond quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

Abstract: Results of a reconnaissance geochemical survey of the Sherman Quadrangle, Texas; Oklahoma are reported. Field and laboratory data are presented for 718 groundwater and 715 stream sediment samples. Statistical and areal distributions of uranium and possible uranium related variables are displayed. A generalized geologic map of the survey area is provided, and pertinent geologic factors which may be of significance in evaluating the potential for uranium mineralization are briefly discussed.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Washington quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Baltimore, Washington, and Richmond quadrangles including background information, a description of methods, data reduction and analysis, and data presented in maps, tables, and graphical forms.