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.

From introduction: This report presents uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Shiprock National Topographic Map Series (NTMS) quadrangle, New Mexico/Arizona, by the Los Alamos Scientific Laboratory (LASL).

From abstract: Results of a reconnaissance geochemical survey of the Lincoln Quadrangle are reported. Field and laboratory data are presented for 577 groundwater and 754 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 which may be of significance in evaluating the potential for uranium mineralization are briefly discussed.

Abstract: Field and laboratory data are presented for 161 water samples and 235 sediment samples from the Douglas Quadrangle, Arizona; New Mexico. Uranium values have been reported by Los Alamos National Laboratory in Report GJBX-69(78). The samples were collected by Los Alamos National Laboratory; laboratory analysis and data reporting were performed by Uranium Resource Evaluation Project at Oak Ridge, Tennessee.

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.

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.

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.

Data collected as part of the Douglas Quadrangle in Arizona including laboratory and field data on waters and sediments.

Data collected as part of a hydrogeochemical and stream sediment reconnaissance for the Lincoln NTMS quadrangle in Kansas and Nebraska including laboratory data on well water and stream sediments as well as field data.

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.

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.

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the San Angelo National Topographic Map Sheet (NH 14-1). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings.

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the Big Spring National Topographic Map Sheet (NI 14-10). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings.

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the Hobbs National Topographic Map Sheet (NI 13-12). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings.

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the Perryton National Topographic Map Sheet (NJ 14-10). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings. -- check/adjust details

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the Sonora National Topographic Map Sheet (NH 14-4). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings.

Report documenting results of analysis for airborne gamma radiation and total magnetic field survey for the Woodward National Topographic Map Sheet (NJ 14-11). It includes data calculations and profiled data readings with a general description of the area and corresponding data readings.

This report is one part of the second volume containing data on quadrangles of Texas, Oklahoma, Arkansas and Louisiana. This volume contains the detailed geologic summary, interpretation report, standard deviation maps, pseudo-contour maps, interpretation map, flight line and geologic base map, individual corrected profiles, computer map unit histograms and statistical tables for the Texarkana quadrangle.

The following report is the second volume discussing the detailed aerial gamma ray and magnetic survey results taken for the Montrose quadrangle. This report focuses on Area 1, a detail area in Colorado, and provides a detailed geologic summary, interpretation report, six gamma ray and one magnetic contour maps. geochemical analysis map, interpretation map, flight line map, individual corrected profiles, survey area histograms and statistical tables.

The following report is the second volume discussing the detailed aerial gamma ray and magnetic survey results taken for the Montrose quadrangle. This report focuses on Area 4, a detail area in Colorado, and provides a detailed geologic summary, interpretation report, six gamma ray and one magnetic contour maps. geochemical analysis map, interpretation map, flight line map, individual corrected profiles, survey area histograms and statistical tables.

"This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the four holes drilled in the Lemhi Pass, Montana/Idaho area." (from Introduction)

This following report discusses the studies and findings of the East Chaco Canyon drilling project of northwestern New Mexico. These studies took place between July and November of 1978.

"This report presents engineering details, statistics, and individual borehole histories of the 27 holes drilled for this project." (from Introduction)

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Montrose Detail Area #4 in Colorado.