From abstract: Between mid-May and late June 1976, 3409 water and water-transported sediment samples were collected from 1781 locations spread over an approximate 17 000 kilometer area of northwestern Montana. All of the samples were analyzed for total uranium at the LASL, using standardized procedures and rigorous quality controls--the waters by fluorometry and the sediment (and those waters with >10 parts per billion uranium) by delayed-neutron counting methods.

From introduction: This report describes work done in the Noatak and portions of the Baird Mountains and Ambler River, Alaska, National Topographic Map Series (NTMS) quadrangles (1:250 000 scale) by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).

This report provides uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Craig quadrangle, Colorado.

From purpose of study: The Vallecito Conglomerate of the Needle Mountains area in southwestern Colorado was studied to evaluate the uranium potential of the unit and to test the applicability of the uraniferous Precambrian pebble-conglomerate exploration model in this area. The main thrust of this project is the Vallecito Conglomerate, but the Uncompahgre Formation, which is also in the Needle Mountains area has basal conglomerate that was investigated in a reconnaissance mode. Five specific objectives have been formulated to meet the overall purpose of this project, and these include: a) Determine the uranium distribution in the Vallecito Conglomerate and the basal conglomerate of the Uncompahgre Formation. b) Evaluate the uranium resources of the area to the degree possible utilizing available information and personal field investigations. c) Test the validity of application of the Precambrian quartz-pebble conglomerate model to this area. d) Recommend detailed studies and delineate drilling sites in the area to further evaluate the uranium resources if warranted. e) Recommend additional geologic, geophysical and geochemical studies which would bear directly on evaluation of uranium resources of the Precambrian pebble conglomerates in the Needle Mountains area.

Results of the Lakeview detailed geochemical survey are reported. Field and laboratory data are reported for 231 groundwater, 881 stream sediment, and 303 stream water samples. Statistical and areal distributions of uranium and possible uranium-related variables are displayed. A generalized geologic map of the area is provided and pertinent geologic factors which may be of significance in evaluating the potential for uranium mineralization are briefly discussed.

From abstract: This report presents the results of the geochemical reconnaissance sampling in the Prescott quadrangle of the National Topographic Map Series (NTMS). Wet and dry sediment samples were collected throughout the 18,770 square kilometer arid-to-semiarid area and water samples at available streams, springs, and wells.

Supplementary data containing sediment sample analyses to accompany a report on hydrogeochemical and stream sediment reconnaissance for the Presscott NTMS Quadrangle, Arizona.

From introduction: The data presented here are reconnaissance data intended for use in identifying broad areas for further study. While care has been taken to provide reliable sampling and analyses, verification of individual analyses is beyond the scope of this report. The data should be viewed statistically because "one-point anomalies" may be misleading. Regional trends, however, should be reliable. This report is one of a series presenting data obtained by SRL reconnaissance.

Supplementary analytical data containing elemental concentration data in surface sediment samples and ground water samples, in addition to areal distribution maps, histograms, and cumulative frequency plots. Also included is site location data for surface and ground water samples, and a user's guide. This data accompanies a report on hydrogeochemical and stream sediment reconnaissance of the Baker 1° x 2° NTMS Area, Oregon and Idaho.

From abstract: This abbreviated data report presents results of ground water and stream/surface sediment reconnaissance in the National Topographic Map Series (NTMS) Needles 1' x 2 quadrangle. Surface sediment samples were collected at 1672 sites, at a target sampling density of one site per 13 square kilometers (five square miles). Ground water samples were collected at 49 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. 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.

Supplementary data containing tabulated elemental concentration data in surface sediment and ground water samples in addition to areal distribution maps, histograms, and cumulative frequency plots. Also included is sample site location data for surface and ground water samples and a user's guide. This data accompanies a report on hydrogeochemical and stream sediment reconnaissance in California and Arizona.

Introduction: Anticipated uranium requirements of nuclear power plants have prompted many organizations to examine the possibility of recovering uranium from low-grade sources such as shale, phosphate, sea water, and coal. Coal has generated special interest because some uranium was recovered from uranium-bearing carbonaceous rock in the mid-1960s. About 5,000 samples of coal have been analyzed for uranium by the U.S. Geological Survey, U.S. Bureau of Mines, U.S. Atomic Energy Commission, U.S. Energy Research and Development Administration, and numerous state and private agencies.

From abstract: Several low-level radiometric anomalies had been detected in an airborne survey of the Copper River Basin. This report presents the results of field and laboratory research on the origin of the anomalies, and the low radiometric background of the Copper River Basin.

Supplementary data containing radiometric readings of several locations to accompany a report on low-level airborne radiometric anomalies in the Copper River Basin Region, Alaska.

First volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of four quadrangles in Wisconsin, Minnesota, and Michigan including documentation about data collection and analysis.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ashland quadrangle including maps documenting geophysical and geochemical data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron River quadrangle including maps documenting geophysical and geochemical data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Marquette quadrangle including maps documenting geophysical and geochemical data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hancock quadrangle including maps documenting geophysical and geochemical data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ashland quadrangle including magnetic, ancillary and radiometric data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Iron River quadrangle including magnetic, ancillary and radiometric data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Marquette quadrangle including magnetic, ancillary and radiometric data.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hancock quadrangle including magnetic, ancillary and radiometric data.

This report presents preliminary results of ground water, stream sediment, and stream water studies in the Hartford quadrangle in Connecticut, New Jersey, and New York.