Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Scottsbluff quadrangle including a detailed geologic summary, interpretation report, standard deviation maps, pseudo-contour maps, interpretation maps, flight line and geologic base map, and individual corrected profiles.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Alliance quadrangle including a detailed geologic summary, interpretation report, standard deviation maps, pseudo-contour maps, interpretation maps, flight line and geologic base map, and individual corrected profiles.

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Report discussing a reconnaissance search for uranium in shale during August 1953 in western Nebraska and southern South Dakota. The reconnaissance was part of the U.S. Geological Survey's search for uranium in carbonaceous materials.

Abstract: A digital simulation model was used to analyze regional ground-water flow in the Madison Group aquifer in the Powder River Basin and adjacent areas. Most recharge to the aquifer originates in or near the outcrop areas of the Madison in the Bighorn Mountains and Black Hills , and most discharge occurs through springs and wells. Results from the model calculations indicate that the total flow through the aquifer in the modeled areas was approximately 200 cubic feet per second (5.7 cubic metres per second). The aquifer can probably sustain increased ground-water withdrawals probably would significantly lower the potentiometric surface in the Madison aquifer in a large part of the basin. The digital model could better predict the effects of withdrawals if more accurate estimates of the storage coefficient, transmissivity, and leakance could be obtained.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Omaha quadrangle in Iowa and Nebraska.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Omaha quadrangle in Iowa and Nebraska.