Appendices containing data on uranium occurrences in the Hot Springs Quadrangle to accompany a report on uranium availability in South Dakota and Nebraska.

Appendices containing data on uranium resources in the Gillette Quadrangle to accompany a report on U.S. uranium resources in Wyoming, South Dakota, and Montana.

From Introduction: "The Hot Springs Quadrangle covers an area of approximately 18,500 km2 and is in southwestern South Dakota and northwestern Nebraska between latitudes 43º to 44ºN. and longitudes 102º to 104ºW. (Fig. 1). The quadrangle was evaluated at the surface and in the subsurface to a depth of 1500 m to identify geologic environments and delineate areas that exhibit characteristics favorable for uranium deposits."

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.

Uranium resources of the Newcastle 1°x2° Quadrangle, Wyoming and South Dakota were evaluated to a depth of 1,500 m (5000 ft) using available surface and subsurface geologic information. Many of the uranium occurrences reported in the literature and in reports of the U.S. Atomic Energy Commission were located, sampled and described. Areas of anomalous radioactivity, interpreted from an aerial radiometric survey, were outlined. Areas favorable for uranium deposits in the subsurface were evaluated using gamma-ray logs. Based on surface and subsurface data, two areas have been delineated which are underlain by rocks deemed favorable as hosts for uranium deposits. One of these is underlain by rocks that contain fluvial arkosic facies in the Wasatch and Fort Union Formations of Tertiary age; the other is underlain by rocks containing fluvial quartzose sandstone facies of the Inyan Kara Group of Early Cretaceous age. Unfavorable environments characterize all rock units of Tertiary age above the Wasatch Formation, all rock units of Cretaceous age above the Inyan Kara Group, and most rock units of Mesozoic and Paleozoic age below the Inyan Kara Group. Unfavorable environments characterize all rock units of Cretaceous age above the Inyan Kara Group, and all rock units of Mesozoic and …

Results of reconnaissance surveys of the Rapid City quadrangle to determine the likelihood of uranium deposits of the area, and additional information about the location and classification of any deposits.

From Purpose and Scope: "The Gillette 1º x 2º Quadrangle, Wyoming, and South Dakota was evaluated to find volumes of rock considered favorable for uranium deposits and which could contain at least at 100 mt tons U3O8 with an average grade of 0.01 percent U3O8 or more. All geologic environments to a depth of 1,500 m (5,000 ft) evaluated through the use of surface investigations and subsurface information."

From Introduction: "The Lemmon Quadrangle, South Dakota and North Dakota, was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

Uranium resources of the Newcastle 1°x2° Quadrangle, Wyoming and South Dakota were evaluated to a depth of 1,500 m (5000 ft) using available surface and subsurface geologic information. Many of the uranium occurrences reported in the literature and in reports of the U.S. Atomic Energy Commission were located, sampled and described. Areas of anomalous radioactivity, interpreted from an aerial radiometric survey, were outlined. Areas favorable for uranium deposits in the subsurface were evaluated using gamma-ray logs. Based on surface and subsurface data, two areas have been delineated which are underlain by rocks deemed favorable as hosts for uranium deposits. One of these is underlain by rocks that contain fluvial arkosic facies in the Wasatch and Fort Union Formations of Tertiary age; the other is underlain by rocks containing fluvial quartzose sandstone facies of the Inyan Kara Group of Early Cretaceous age. Unfavorable environments characterize all rock units of Tertiary age above the Wasatch Formation, all rock units of Cretaceous age above the Inyan Kara Group, and most rock units of Mesozoic and Paleozoic age below the Inyan Kara Group. Unfavorable environments characterize all rock units of Cretaceous age above the Inyan Kara Group, and all rock units of Mesozoic and …

The following report provides results from a geochemical survey for the Hot Springs quadrangle, South Dakota. Field and laboratory data are presented for 340 groundwater and 394 stream sediment samples.

The following plates depict the geology of the Ekala quadrangle in Montana, North and South Dakota.

The following report presents results of the Edgement detailed geochemical survey. Field and laboratory data are presented for 109 groundwater and 419 stream sediment samples.

The following report gives detailed results of the geochemical survey taken in Buffalo-Lignite, South Dakota. Field and laboratory data are presented for 163 groundwater and 660 stream sediment samples collected within the Custer and Slim Buttes project areas.

Final report regarding the National Logging Program for the National Uranium Resource Evaluation

"Results of a reconnaissance geochemical survey of the O'neill Quadrangle are reported. Field and laboratory data are presented for 23 groundwater and 292 stream sediment samples. Statistical distributions and symbol plots for uranium and possible uranium-related variables are enclosed. A generalized geologic map and producing horizon map for the survey area are provided. Pertinent geologic factors that may be of significance in evaluating the potential for uranium mineralization are briefly discussed." (from Abstract)

from Abstract: "Results are reported of a reconnaissance geochemical survey of the Lemmon quadrangle, South Dakota. Field and laboratory data are presented for 565 groundwater and 531 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 are briefly discussed which may be of significance in evaluating the potential for uranium mineralization."

This report provides the results of analyses of the airborne gamma radiation and total magnetic field survey flown for the Martin quadrangle in South Dakota.

Final report documenting a high-sensitivity airborne gamma radiation and magnetic field survey of the Pierre National Topographic Map segment (NL 14-10 quadrangle) including a description of the program and results with the flight line profile data and statistical analysis results.

Tables presenting well water, stream sediment, and field data for samples collected from a geochemical survey of the Milbank Quadrangle in Minnesota, North Dakota, and South Dakota.