A report which compares 20,000 feet of Belt rocks in the Mission Mountains Primitive Area in Montana with 40,000 feet of Belt rocks in the Pend Oreille area in Idaho and Montana.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hailey 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 Idaho Falls 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 Elk City 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 Boise 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.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Boise, Hailey, Idaho Falls, and Elk City quadrangles including the survey description, specifications, data processing methods, interpretation methods, and regional geologic review.

Report documenting the results of an aerial radiometric and magnetic reconnaissance survey of the Pocatello quadrangle in Idaho.

From introduction: This volume contains information and survey results pertaining specifically to the Twin Falls NTMS 1:250,000 scale Quadrangle, Idaho, one of a group of 12 such quadrangles in Arizona, Idaho, Montana, New Mexico, South Dakota, and Washington included in an aerial radiometric and magnetic reconnaissance survey. General information concerning the instrumentation and methods used in data acquisition, processing, and interpretation is presented in Volume 1 of this final report.

From summary: The purpose of this study was to delineate favorable areas for uranium resources in northeastern Washington and northern Idaho by identifying granitic rocks with relatively large amounts of uranium and (or) thorium. Results are based on analyses of 344 rock samples; 230 were collected during this study, and data for the rest were taken from previous publications.

From objectives: The principal objective of this work is to determine those areas that are favorable for concealed uranium deposits beneath the Challis Volcanic rocks in the area north of the Stanley Basin and south of the West Fork of Yankee Fork.

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

Report issued by the Bureau of Mines on the geochemical anomalies found in the gold-antimony deposits near Stibnite, Idaho. Many samples were collected and tested through an atomic absorption method. This report includes a map.

Final report documenting a high-sensitivity airborne gamma radiation and magnetic field survey of the Baker National Topographic Map segment (NL 11-11 quadrangle) including a description of the program and results.

The following report is the second volume documenting a high-sensitivity airborne gamma radiation and magnetic field survey of the Baker National Topographic Map segment. This document presents the flight line profile data and statistical analysis results.

This report studies the several aspects of the basalts in the Columbia River Basalt Group in the Spokane quadrangle, Washington, Idaho, and Montana.

Abstract: A method which relates basin characteristics with peak flow characteristics is presented for determining magnitude and frequency of floods on streams with drainage areas between 0.5 and 200 square miles. Regression equations for each of eight regions are presented for determination of the 10-year flood. Peak flows for the 25- and 50-year floods can then be estimated from ratios developed for each region. Regression equations are not developed because of poor definitions for several areas that total about 20,000 square miles. The equations were based on multiple-regression techniques using annual peaks and basin characteristics for 303 gaged sites.

This report is the second volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Challis National Topographic Map NL11-12. This volume includes the flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station.

This report is the first volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Dillon National Topographic Map NL12-7.

This report is the second volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Dillon National Topographic Map NL12-7. This volume includes the flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station.

This is the first volume of a two-part report on the analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Hamilton National Topographic Map NL-11-6. This volume gives the description of the program and results.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Okanogan and Sandpoint 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 Sandpoint quadrangle including maps documenting geophysical and geochemical data, as well as magnetic, ancillary and radiometric data.

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.