This is a report on the aerial radiometric and magnetic survey, Tonopah National topographic map, Nevada.

This is a airborne reconnaissance report of the Williams Quadrangle in Arizona.

Introduction: The geologic map of the Mariposa quadrangle, which was used as a basis for the interpretation, was supplied by Bendix Field Engineering Corporation. The Formation descriptions in Appendix C are derived from this map supplemented with information from California Division of Mines and Geology (1967).

This is an airborne reconnaissance report on several quadrangles in Arizona, California, and Nevada.

This report contains aerial gamma-ray and magnetic quadrangle maps of portions of California and Nevada.

From introduction: The objective of this survey is to develop a geochemical data base for use by the private sector to locate regions of anomalous uranium content. Prior to wide area coverage, several pilot studies are being undertaken to develop and evaluate sampling and analytical techniques. The first of these studies was conducted in the Walker River Basin.

Abstract: The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Tonopah National Topographic Map NJll-5 is presented in Volume I and II of this report. The airborne data gathered is reduced by ground computer facilities to yield profile plots of the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units. The distribution of data within each geologic unit, for all surveyed map lines and tie lines, has been calculated and is included. Two sets of profiled data for each line are included with one set displaying the above-cited data. The second set includes only flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station. A general description of the area, including descriptions of the various geologic units and the corresponding airborne data, is included also.

Data listings from the area surveyed in a report on Winnemucca in Nevada including single record reduced data listings.

Data listings from the area surveyed in a report on the Hot Springs containing averaged record data listings.

Data listings from the area surveyed in a report on the Hot Springs including single record reduced listings.

Data listings from the area surveyed in a report of Winnemucca in Nevada including single record reduced data and averaged record data listings.

Single record and averaged record data listings for the Kingman quadrangle in Arizona, California, and Nevada, taken during a reconnaissance survey.

Report describing the results of geochemical and stream sediment reconnaissance sampling in the Kingman Quadrangle, to look for uranium and trace elements, and to take other measurements.

Report describing the results of geochemical and stream sediment reconnaissance sampling in the Las Vegas Quadrangle, to look for uranium and trace elements, and to take other measurements.

From introduction: This report presents engineering details, history, well logs, and a brief geologic interpretation of the Carson Sink, Nevada, drilling program. A geologic report is in preparation and the geologic information contained herein is of a preliminary nature.

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. This report also consists of a discussion of the area surveyed and includes all single record reduced data and averaged record data listings on microfiche.

Abstract: This report presents the results of the Cave Valley, Nevada, orientation study in the Lund 10 X 2* quadrangle of the National Topographic Map Series (NTMS). Wet, dry, and playa sediment samples were collected throughout the 360 km 2 semi-arid, closed basin. Water samples were collected at the few available streams 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 Lund NTMS 1:250,000 quadrangle are included. Water site locations, water sample uranium concentration, sediment 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 Cave Valley Pilot Study," GJBX-43(76), August 1976.

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.

From abstract: This report presents the results of the geochemical reconnaissance sampling in the Winnemucca 10 x 20 quadrangle of the National Topographic Map Series (NTMS). We collected wet and dry sediment samples throughout the 18,770-km2 arid to semi-arid area and water samples at available streams, springs and wells. We present neutron activation analyses of uranium and trace elements and other measurements made in the field and laboratory in tabular hardcopy and microfiche format. The report includes 5 full-size overlays for use with the Winnemucca NTMS 1:250,000 quadrangle. Water sampling sites, water-sample uranium and thorium concentrations, sediment sampling sites, and sediment-sample total uranium and thorium concentrations are shown on the separate overlays. We present general geological and structural descriptions of the area, and describe the 12 known uranium occurrences.

Introduction: This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the eleven holes drilled in the McDermitt caldera project during the 1981 drilling program. General information is presented regarding specific problems, including weather and logistics. A separate geologic report is being prepared and will be available through the Bendix Field Engineering Corporation Technical Library in the near future.

From summary: Granitic and contact-metamorphic rocks of the Owens Valley area were sampled to determine their favorability for uranium. Uranium deposits associated with these rocks were examined to determine the mode of occurrence.

From abstract: This data report presents results of ground water and stream sediment reconnaissance in the National Topographic Map Series (NTMS) Death Valley 1 x 2 quadrangle.

From abstract: This abbreviated data report presents results of ground water and stream/surface sediment reconnaissance in the National Topographic Map Series (NTMS) McDermitt 1 x 2* quadrangle. Surface sediment samples were collected at 1337 sites, at a target sampling density of one site per 13 square kilometers (five square miles). Ground water samples were collected at 255 sites and surface water samples were collected at 41 sites. Neutron activation analysis (NAA) results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water and surface water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Analytical data and field measurements are presented in tables and maps.

Data tables containing results of nuetron activation analysis of uranium and trace elements, and other measurements made througout the hydrochemical and stream sediment reconnaissance of the Kingman quadrangle.