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Nomenclature of Precambrian Rocks in Colorado

Description: Abstract: "The Precambrian rocks of Colorado consist of a metaphoric complex more than 1,700 million years in age, three groups of igneous rocks about 1,700, 1,400, and 1,000 million years in age, here designated informal age groups, and two areally restricted units of sedimentary rocks, one between 1,400 and 1,700 million years in age and one between 950 and 1,400 million years. A systematic nomenclature for many of the rocks does not exist, but the present state of knowledge will permit estab… more
Date: 1977
Creator: Tweto, Ogden
Partner: UNT Libraries Government Documents Department
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Airborne Gamma-Ray and Magnetometer Survey, Cortez Quadrangle (Colorado, Utah): Final Report, Volume 1

Description: First volume of a final report documenting the results of an airborne radiometric and magnetic survey in a portion of Colorado and Utah, including a description of the survey methods, calibration of the systems, data processing and displays, and interpretation methods.
Date: July 1979
Creator: Aero Service (Firm)
Location: None
Partner: UNT Libraries Government Documents Department
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Uranium Hydrogeochemical and Stream Sediment Reconnaissance in the San Juan Mountains, Southwest Colorado

Description: From 1995 sites in the San Juan Mountains area, 1706 water and 1982 sediment samples were collected during June-July 1976 and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in t… more
Date: February 1977
Creator: Maxwell, James C.
Partner: UNT Libraries Government Documents Department
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Preliminary Evaluation of the Uranium Favorability in the Area Northeast of Gunnison, Colorado

Description: Rock and stream-sediment samples were collected to define areas favorable for uranium deposits northeast of Gunnison, Colorado. Areas considered most favorable for further exploration are: (1) the Bronco Mountain area, approximately 10 mi south of Taylor Park Reservoir, (2) the area near the Big Red mine, and (3) the area 5 mi north-northeast of Taylor Park Reservoir. On the basis of known deposits in the Marshall Pass and Cochetopa districts, fault contacts between Precambrian granites and Pal… more
Date: August 1977
Creator: Gallagher, Gerald L.; Edmond, C. Lorraine & D'Andrea, Ralph F., Jr.
Partner: UNT Libraries Government Documents Department
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Preliminary Study on Uranium Favorability of the Brushy Basin Member of the Morrison Formation, Southeastern Utah and Southwestern Colorado

Description: This report is a preliminary evaluation of the uranium resources of the Brushy Basin Member of the Morrison Formation of Late Jurassic age in southwestern Colorado and southeastern Utah. The project, which began July 1, 1976, and was completed October 1, 1976, was carried out by the Bendix Field Engineering Corporation (BFEC) for the Grand Junction Office of the U.S. Energy Research and Development Administration (ERDA).
Date: March 1978
Creator: Dubyk, W. S.; Gallagher, Gerald L. & Edmond, C. L.
Partner: UNT Libraries Government Documents Department
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Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Cortez NTMS Quadrangle, Colorado/Utah, Including Concentrations of Forty-Three Additional Elements

Description: This report provides uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Cortez quadrangle, Colorado/Utah.
Date: May 1979
Creator: Warren, Richard G.; George, William E.; Apel, Charles T.; Minor, Michael M.; Steinhaus, David W.; Martell, Calvin J. et al.
Location: None
Partner: UNT Libraries Government Documents Department
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Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Montrose NTMS Quadrangle, Colorado, Including Concentrations of Forty-Three Additional Elements

Description: Report of uranium findings from a reconnaissance of the Gallup NTMS quadrangle through water, sediment, and water samples collected from streams, springs, and wells.
Date: July 1979
Creator: Broxton, David E.; Morris, Wayne A. & Bolivar, Stephen L.
Partner: UNT Libraries Government Documents Department
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Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Moab NTMS Quadrangle, Utah/Colorado, Including Concentrations of Forty-Three Additional Elements

Description: Partial abstract: "During the summers of 1976, 1977, and 1978, 442 water and 1755 sediment samples were collected from 1801 locations within the 19 400 km2 area of the Moab quadrangle, Utah and Colorado, by private contractors for the Los Alamos Scientific Laboratory. Water samples were collected from streams, springs, and wells; wet and dry sediment samples were collected both from stream channels and from springs. Each water sample was analyzed for 13 elements, including uranium, and each sed… more
Date: September 1979
Creator: Goff, Sue & Warren, Richard G.
Partner: UNT Libraries Government Documents Department
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Green River Formation Lithology and Oil Shale Correlations in the Piceance Creek Basin, Colorado

Description: Report issued by the Bureau of Mines discussing the oil-shale formations of the Green River in the Piceance Creek Basin. Detailed descriptions of oil-shale samples taken from the Green River formation are presented. This report includes tables, maps, illustrations, and a photograph.
Date: 1970
Creator: Trudell, Laurence G.; Beard, Thomas N. & Smith, John Ward
Partner: UNT Libraries Government Documents Department
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Earthquake Resistance of Earth and Rock-Fill Dams, Report 2: Analysis of Response of Rifle Gap Dam to Project Rulison Underground Nuclear Detonation

Description: Summary: The motion of Rifle Gap Dam was measured in September 1969 during the Project RULISON underground nuclear explosion. The observed response was then compared with the response computed in a mathematical model. Observed and computed responses were similar. From this study it appears that the mathematical models used are applicable to the design and analysis of soil structures, at least for ground motion intensities comparable to those observed at Rifle Gap Dam. (p. xi).
Date: June 1972
Creator: Ahlberg, James E.; Fowler, Jack & Heller, Lyman W.
Partner: UNT Libraries Government Documents Department
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A Review of the Physical and Engineering Properties of Raw and Retorted Oil Shales from the Green River Formation: Final Report

Description: "This report summarizes published geotechnical properties of raw and retorted oil shales from the Green River Formation. Basic physical properties including gradation, specific gravity and Atterberg limits and engineering properties including compaction, permeability, settlement, soundness, and strength are summarized and discussed. Where appropriate, conclusions are drawn about the suitability of retorted oil shales as a geotechnical construction material. Appendix A discusses three retorti… more
Date: March 1978
Creator: Snethen, Donald R.; Farrell, Warren J. & Townsend, Frank C.
Partner: UNT Libraries Government Documents Department
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Subsurface Stratigraphy and Uranium-Vanadium Favorability of the Morrison Formation, Sage Plain Area, Southeastern Utah and Southwestern Colorado

Description: Introduction: This report presents the results of a subsurface uranium favorability study of the Morrison Formation in southwestern Colorado and southeastern Utah. The project began November 1, 1974 and was concluded April 11, 1975. The study was carried out under the auspices of the Grand Junction Office of the Energy and Research Development Administration (ERDA).
Date: August 1975
Creator: Girdley, W. A.; Flook, J. E. & Harris, R. E.
Partner: UNT Libraries Government Documents Department
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Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Pueblo NTMS Quadrangle, Colorado, Including Concentrations of Forty-Three Additional Elements

Description: From summary: This report describes work done in the Pueblo National Topographic Map Series (NTMS) quadrangle, Colorado, by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).
Date: December 1978
Creator: Shannon, Spencer S., Jr.
Partner: UNT Libraries Government Documents Department
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