Report describing a high-sensitivity aerial gamma-ray spectrometer and magnetometer survey conducted in the lower Yukon River and Kuskokwim River areas of southwestern Alaska (covering fifteen quadrangles) and in the middle Yukon River valley in Interior Alaska (covering eight quadrangles) as part of the National Uranium Resource Evaluation (NURE) Program of the United States Energy Research and Development Administration (ERDA). This program provides information on reconnaissance radioelement distribution to assist in assessing the uraniferous material potential in the United States. The analysis includes medium values of eU, eTh, and K (equivalent uranium, thorium, and potassium) contents of geological units.

Appendix computer data listings to accompany a report on aerial radiometric and magnetic survey of the Bethel and Yukon areas in Alaska.

This report presents the results of a preliminary study of the uranium favorability of the Sangre de Cristo Formation (Pennsylvanian-Permian) in the Las Vegas basin, northeastern New Mexico. Because known uranium deposits are confined mainly to the Sangre de Cristo, the following discussions are limited to this formation. The study focuses on sedimentologic and stratigraphic characteristics relevant to uranium deposition. The investigation was conducted by Bendix Field Engineering Corporation (BFEC) on behalf of the U.S. Energy Research and Development Administration (ERDA).

Three formations in the Tertiary of the San Juan Basin were investigated for their uranium favorability. They are the Ojo Alamo Sandstone, the Nacimiento Formation, and the San Jose Formation. The study comprised a literature survey and a basin analysis, which consisted of subsurface lithofacies, stratigraphic, and radiometric mapping. Field work in preparation for the subsurface analysis consisted of examination of outcrop and measured sections, surface radiometric traverses, and checking of reported surface radioactive anomalies.

Abstract: This report presents the results of the Roach Lake Basin, Nevada, orientation study in the Kingman 10 x 2* quadrangle of the National Topographic Map Series (NTMS). Wet, dry, and playa sediment samples were collected throughout the 420 km2 semi-arid, closed basin. Water samples were collected at the few available wells and springs. In addition to neutron activation analysis for uranium and 15 to 20 trace elements on all samples, field and laboratory measurements were made on water samples. Analytical data and field measurements are presented in tabular hardcopy and fiche format. Four full-size overlays for use with the Kingman NTMS 1:250,000 quadrangle are included. Water sample site locations, water sample uranium concentration, sediment sample site locations, and sediment sample total uranium concentration are shown on the separate overlays. A general description of the area and the rock type distribution is presented. Some of the data in this report have been issued previously in "Preliminary Report on the Roach Lake Pilot Study," GJBX-44(76), August 1976.

Supplementary data containing site location and uranium concentration data of water and sediment samples to accompany a report on hydrogeochemical and stream sediment reconnaissance in Nevada.

This report follows the orientation studies in the Spruce Pine, Moore, and Johnston, North Carolina areas that were conducted by the Savannah River Laboratory in preparation for a hydrogeochemical and stream sediment reconnaissance. A total of 298 sediment sites and 210 ground water sites were sampled for this study.

From abstract: Results of a reconnaissance geochemical survey at a nominal sample spacing of 16 km (10 mi) are reported for the Plainview, Lubbock, and Big Spring Quadrangles in northwest Texas. Stream sediment, stream water, and groundwater were analyzed for approximately 25 parameters.

The data collected in this report was recorded after a high sensitivity airborne radiometric and magnetic survey was conducted over the Rock Springs, Rawlins, and Cheyenne quadrangles in Wyoming, and the Greeley quadrangle in Colorado.

This report is the second volume in a series of reports documenting airborne radiometric and magnetic survey results for the Rockies/Laramie Range project. This volume contains data maps on the Greeley quadrangle in Colorado.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Cheyenne quadrangle in Wyoming.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Cheyenne quadrangle in Wyoming.

The following report provides results and studies that were made in the Rawlins quadrangle, Wyoming with the purpose of identifying the granitic rocks having higher normal concentrations of uranium, as possible sources of large, low grade uranium ore.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Greeley quadrangle in Colorado.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Greeley quadrangle in Colorado.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Greensboro Quadrangle in Blue Ridge area.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Greensboro Quadrangle in Blue Ridge area.

The following report presents the results of the geochemical reconnaissance sampling in the Millet quadrangle, Nevada.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Johnson City Quadrangle in Blue Ridge area.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Johnson City Quadrangle in Blue Ridge area.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Greensboro, Winston-Salem, and Johnson City quadrangles 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 Greensboro quadrangle including maps documenting geophysical and geochemical data, as well as magnetic, ancillary and radiometric data.

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

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