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Geology and Uranium Evaluation of the Precambrian Quartz-Pebble Conglomerates of the Needle Mountains, Southwest Colorado: Final Report

Description: 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.
Date: May 1980
Creator: Burns, L. K.; Ethridge, Frank G.; Tyler, N.; Gross, A. S. & Campo, A. M.

The Uinta Arch Project -- Investigations of Uranium Potential in Precambrian X and Older Metasedimentary Rocks in the Uinta and Wasatch Ranges, Utah and Colorado: Final Report

Description: From introduction: This study is part of the United States Department of Energy's National Uranium Resource Evaluation Program to understand the geologic setting, amount, and availability of uranium resources within the boundaries of the United States.
Date: June 1980
Creator: Graff, P. J.; Sears, J. W. & Holden, G. S.

Multivariate Statistical Analysis of Stream Sediments for Mineral Resources from the Craig NTMS Quadrangle, Colorado

Description: Abstract: Multivariate statistical analyses were carried out on Hydrogeochemical and Stream Sediment Reconnaissance data from the Craig quadrangle, Colorado, to support the National Uranium Resource Evaluation and to evaluate strategic or other important commercial mineral resources. A few areas for favorable uranium mineralization are suggested for parts of the Wyoming Basin, Park Range, and Gore Range. Six potential source rocks for uranium are postulated based on factor score mapping. Vanadium in stream sediments is suggested as a pathfinder for carnotite-type mineralization. A probable northwest trend of lead-zinc-copper mineralization associated with Tertiary intrusions is suggested. A few locations are mapped where copper is associated with cobalt. Concentrations of placer sands containing rare earth elements, probably of commercial value, are indicated for parts of the Sand Wash Basin.
Date: June 1980
Creator: Beyth, Michael; McInteer, Carlotta; Broxton, David E.; Bolivar, Stephen L. & Luke, Mary E.

Aerial Radiometric and Magnetic Reconnaissance Survey of South-Central Colorado Trinidad Quadrangle: Volume 2. [Results]

Description: Second volume of data from a radiometric and magnetic reconnaissance survey of the Trinidad quadrangle in Colorado, including "Results of the interpretation in the form of a preferred anomaly map, along with significance-factor profile maps stacked profiles, histograms, and descriptions of the geology and known uranium occurrences" (vol. 1, p. 1).
Date: January 1980
Creator: Texas Instruments Incorporated
Location Info:

Aerial Gamma Ray and Magnetic Survey, Final Report: Volume 1. Montrose Detail Projects, Colorado

Description: 4,231 miles of high sensitivty airborne radiometric and magnetic data were gathered in southwestern Colorado. Data were collected on traverse lines 1/4 mile apart and on tie lines of approximately 6 mile spacing in five seperate detail areas primarily within the Montrose 1° x 2° sheet. All data were fully reduced and interpered by geoMetrics and are presented as six volumes in this final report.
Date: April 1980
Creator: EG & G GeoMetrics
Location Info: