From introduction: Geodata International, Incorporated, conducted an airborne gamma ray and total magnetic field survey of a region of Northwest Texas which covered the Lubbock and Plainview Geologic Atlas Maps. The area shown on Figure 1 was surveyed from an aircraft using large-volume radiation detectors with computer-controlled airborne equipment. Each map line was flown in an east-west direction with an average length of 120 miles. A total of 47 map lines were surveyed spaced at 3-mile intervals beginning at latitude 33000' and ending at latitude 350

From purpose and scope: The Lubbock, Texas, Quadrangle of the National Topographic Map Series (NTMS), scale 1:250,000, was evaluated to identify and delineate geologic environments favorable for the occurrence of uranium. The study was conducted by the Bureau of Economic Geology (BEG) of the University of Texas at Austin, under subcontract to Bendix Field Engineering Corporation (BFEC), for the National Uranium Resource Evaluation (NURE) program, managed by the Grand Junction Office of the U.S. Department of Energy (DOE).

Purpose and scope: The Eau Claire Quadrangle, Wisconsin and Minnesota, was evaluated to identify geologic units and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. All geologic environments to a depth of 1500 m (5,000 ft) were evaluated by means of surface investigations and available subsurface data. Each environment was categorized as favorable, unfavorable, or unevaluated for uranium deposits based on recognition criteria contained in the study of significant uranium districts worldwide (Mickle and Mathews, eds., 1978). Evaluation of the Eau Claire Quadrangle was conducted by Golder Associates, Inc., under subcontract to Bendix Field Engineering Corporation (BFEC), for the National Uranium Resource Evaluation (NURE) program, managed by the Grand Junction Office of the U.S. Department of Energy (DOE). The evaluation program began February 1, 1978, and ended February 1, 1980. Time spent by Golder personnel on literature search, field work, evaluation of data, and preparation of the final report totaled approximately 3.5 man-years.

From Introduction: "The Challis Quadrangle, in central Idaho between lat 44º and 45º N. and long 114º and 116º W. (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

From Introduction: "The Butte Quadrangle, Montana (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Each environment was categorized as favorable, unfavorable, or evaluated according to criteria established in Mickle and Mathews (eds., 1978)."

From Introduction: "The Elk City Quadrangle (1º by 2º), Idaho and Montana, was evaluated to identify and delineate geologic environments that exhibit characteristics favorable for the occurrence of uranium deposits."

From Purpose and Scope: "The Beeville Quadrangle, Texas, was evaluated to a depth of 1500 m (5,000 ft) to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

None

From Introduction: "The Elko Quandrangle, in northeastern Nevada and western Utah between latitude 40º and 41º and longitude 114º and 116º (Fig. 1), was evaluated to identify geologic units and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Geologic environments were evaluated on the basis of surface investigations and limited subsurface data."

From Introduction: "The Leadville Quadrangle, Colorado (Fig. 1), was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits. Geologic environments were placed into one of three categories--favorable, unfavorable, or unevaluated--based on National Uranium Resource Evaluation (NURE) program."

From Introduction: "The Lander Quadrangle, Wyoming (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Favorable areas are those that are capable of containing uranium deposit of at least 100 tons of U3O8 in rocks with a minimum average ore grade of 0.01%."

From Introduction: "The Reno Quadrangle, Nevada and California (Fig. 1), was evaluated to a depth of 1500 m (5,000 ft) to identify geologic environments and delineate areas that exhibit characteristics favorable for uranium deposits. Favorable environments are those that could contain at least 100 tons U3O8 at an average grade of at least 0.01% U3O8."

From Introduction: "The Ritzville Quadrangle, in north-central Washington between lat. 47ºN. and 48ºN. and long 118ºW and 120ºW. (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Favorable environments, as determined by surface and subsurface investigations, are those that could contain uranium deposits of at least 100 tons U3O8 in rocks with an average grade not less than 100 ppm U3O8."

From Introduction: "The Seguin Quadrangle, Texas, was evaluated to a depth of 1500 m (5,000 ft) to identify geologic units and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Each geologic environment was categorized as favorable, unfavorable, or unevaluated for uranium deposits, based on recognition criteria obtained from the study of significant uranium districts worldwide (Mickle and Matherws, eds.1978)."

Abstract: This data report presents supplemental analytical results for 1328 stream sediment samples that were collected as part of the SRL-NURE reconnaissance in the National Topographic Map Series (NTMS) Williamsport 1 x 2 quadrangle. Results are reported for 23 elements (extractable U, Ag, As, Ba, Be, Ca, Co, Cr, Cu, K, Li, Mg, Mo, Nb, Ni, P, Pb, Se, Sn, Sr, W, Y, and Zn). Analyses are tabulated and displayed graphically on microfiche. Field data and neutron activation analysis (NAA) were open-filed in DPST-79-146-8 [GJBX-152(79)].

This report follows the evaluation of uranium resources in the Ekalaka 1°x 2° Quadrangle, Montana and North and South Dakota to a depth of 1,500 m (5,000 ft) using available subsurface geologic information.

The following report is a collection of maps documenting the findings from the airborne gamma-ray spectrometer and magnetometer survey in the Du Bois Quadrangle.

This report documents the airborne gamma-ray spectrometer and magnetometer survey over the Du Bois quadrangle in Idaho, Montana, the study takes place between August 29 and September 21, 1978.

This report provides radiometric and magnetic data for the Shreveport quadrangle in Louisiana that was acquired and processed in May and June of 1980. Appendix A provides a detailed summary of data acquisition, processing, interpretation, and presentation methods; Appendix B contains a flight summary report for the quadrangle.

This report provides radiometric and magnetic data for the Alexandria quadrangle between Louisiana and Texas that was acquired and processed in May and June of 1980. Appendix A provides a detailed summary of data acquisition, processing, interpretation, and presentation methods; Appendix B contains a flight summary report for the quadrangle.

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