Resource Type
Collection
Serial/Series Title
United States Geological Survey Reports
365
Trace elements investigations report
143
United States Department of Energy Grand Junction Office Reports
79
Atomic Energy Commission Reports
73
GJBX
73
Trace elements memorandum report
66
United States Bureau of Mines Reports
64
Water Resources Investigations Reports
55
U.S. Geological Survey bulletin
32
Geological Survey bulletin
23
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Reservoir Development Impacts on Surface-Water Quantity and Quality in the Yampa River Basin, Colorado and Wyoming
From introduction: This report describes the results of an investigation in which three computer models were used to evaluate different levels of the proposed reservoir development. One model simulated streamflow conditions with alternative multireservoir configurations; a second model simulated the dissolved-solids concentrations at various locations in the basin; and a third model used streamflows and dissolved solids concentrations to simulate the water-quality conditions within certain proposed reservoirs. This study was designed to demonstrate the application of computer-modeling techniques in evaluating impacts of proposed reservoirs.
Date:
1983
Creator:
Adams, D. Briane; Bauer, Daniel P.; Dale, Robert H. & Steele, Timothy Doak
System:
The UNT Digital Library
Beryllium Deposits of the Mount Antero Region, Chaffee County, Colorado
Report discussing the possible existence of pegmatites containing beryllium deposits in the granite stock in the vicinity of Mount Antero and White Mountain, Chaffee County, Colorado.
Date:
May 1951
Creator:
Adams, John W.
System:
The UNT Digital Library
Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Discussing wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick
System:
The UNT Digital Library
Wall-Rock Control of Certain Pitchblende Deposits in Golden Gate Canyon, Jefferson County, Colorado
Report discussing a geological study of the Union Pacific prospect near the Golden Canyon in Jefferson County, Colorado.
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick, Jr.
System:
The UNT Digital Library
Uranium Occurrences in the Golden Gate Canyon and Ralston Creek Areas, Jefferson County, Colorado
From abstract: Pitchblende, associated with base-metal sulfides, has been found at eight localities in the northern part of Jefferson County, Colo., in shear zones that cut pre-Cambrian metamorphic and igneous rocks, chiefly hornblende gneiss, biotite schist, and granite pegmatite. The pitchblende deposits, with one exception, are in major shear zones that contain vein-like bodies of carbonate-rich breccia. The breccia bodies range from 1 to 5 feet in thickness and are related probably to the Laramide faults, or "breccia reefs" of similar trend, mapped by Lovering and Goddard (1950).
Date:
January 1953
Creator:
Adams, John W.; Gude, Arthur J., III & Beroni, E. P.
System:
The UNT Digital Library
Airborne Gamma-Ray and Magnetometer Survey, Cortez Quadrangle (Colorado, Utah): Final Report, Volume 1
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)
System:
The UNT Digital Library
Airborne Gamma-Ray and Magnetometer Survey, Cortez Quadrangle (Colorado, Utah): Final Report, Volume 2
Second volume of a final report documenting the results of an airborne radiometric and magnetic survey, including data displays and interpretation results for the Cortez quadrangle.
Date:
July 1979
Creator:
Aero Service (Firm)
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 1
Final report documenting a survey of the Durango quadrangle in Colorado as part of the Platoro Caldera detail survey. This volume outlines survey and analysis methods, and summarizes results.
Date:
August 1979
Creator:
Aero Service (Firm)
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 1
This report documents a complete summary on the high sensitity airborne gamma-ray spectrometer and magnetometer survey over the Durango quadrangle.
Date:
August 1979
Creator:
Aero Service (Firm)
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 2
The following report is a collection of maps documenting results from the airborne gamma-ray spectrometer and magnetometer survey in the Durango Quadrangle.
Date:
June 1979
Creator:
Aero Service (Firm)
System:
The UNT Digital Library
Earthquake Resistance of Earth and Rock-Fill Dams, Report 2: Analysis of Response of Rifle Gap Dam to Project Rulison Underground Nuclear Detonation
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.
System:
The UNT Digital Library
Hydrologic Effects of Annually Diverting 131,000 Acre-Feet of Water from Dillon Reservoir, Central Colorado
From abstract: because of the increased demands for water in eastern Colorado, principally in the urbanizing Denver metropolitan area, increased diversions of water from Dillon Reservoir are planned. Estimates of end-of-month storage in Dillon Reservoir, assuming the reservoir was in place and 131,000 acre-feet of water were diverted from the reservoir each year, were reconstructed by mass balance for the 1931-77 water years. Based on the analysis, the annual maximum end-of-month drawdown below the elevation at full storage would have been 171 feet.
Date:
January 1979
Creator:
Alley, W. M.; Bauer, D. P.; Veenhuis, J. E. & Brennan, Robert
System:
The UNT Digital Library
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence …
Date:
September 1955
Creator:
Alvord, Donald C.
System:
The UNT Digital Library
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Report discussing the San Miguel bench and the production of carnotite from deposits consisting of sandstone with uranium- and vanadium-bearing minerals.
Date:
September 1955
Creator:
Alvord, Donald C.
System:
The UNT Digital Library
Preliminary report on exploration of the San Miguel bench, Montrose County, Colorado
A report discussing an exploration of the san Miguel Bench
Date:
June 2, 1953
Creator:
Alvord, Donald C.
System:
The UNT Digital Library
Present and Potential Sediment Yields in the Yampa River Basin, Colorado and Wyoming
This report tracks and analyses the annual sediment yield for the Yampa River basin in Colorado and Wyoming. It includes maps, tables, and graphs.
Date:
December 1978
Creator:
Andrews, Edmund D.
System:
The UNT Digital Library
Relationship of Carbonate Cement to Lithology and Vanadium-Uranium Deposits in the Morrison Formation in Southwestern Colorado
Report discussing a study on the connection between carbonate content of samples from the Salt Wash member of the Morrison formation and the lithology and vanadium-uranium deposits in the area.
Date:
July 1958
Creator:
Archbold, N. L.
System:
The UNT Digital Library
Stratigraphy of the Mississippian System, South-Central Colorado and North-Central New Mexico
From abstract: In the Sawatch, Mosquito and Front Ranges of central Colorado and the Sangre de Cristo Mountains of south-central Colorado, Tournaisian beds of the Mississippian Leadville Limestone overlie rocks of Early Mississippian and Late Devonian age. In the Sangre de Cristo Mountains in north-central New Mexico, the oldest beds are the Tournaisian (zone 9) Espiritu Santo Formation. In west-central New Mexico, in the Magdalena, Lemitar, and Ladron Mountains, the Kelly Limestone of Tournaisian and Visean age rests unconformably on Proterozoic metamorphic and igneous rocks. This report examines the stratigraphy of this area.
Date:
1992
Creator:
Armstrong, Augustus K.; Mamet, Bernard L. & Repetski, John E.
System:
The UNT Digital Library
[Evolution of Sedimentary Basins--San Juan Basin: Chapters J and K]
From introduction to each respective report: Report J summarizes the results of several studies concerning the stratigraphy and sedimentology of uppermost Jurassic to lowermost Upper Cretaceous rocks in the San Juan basin and adjacent areas. Report K describes using X-ray diffraction techniques to determine the occurrence and distribution of clay minerals in the upper part of the Brushy Basin Member and in the Burro Canyon Formation in the Four Corners area.
Date:
1992
Creator:
Aubrey, William M. & Skipp, Gary
System:
The UNT Digital Library
Economic Methods of Utilizing Western Lignites
Report issued by the Bureau of Mines over western lignite. The economic use of these lignite deposits is discussed. This report includes tables, illustrations, and photographs.
Date:
November 1915
Creator:
Babcock, E. J.
System:
The UNT Digital Library
Production and Briquetting of Carbonized Lignite
From Introduction: "The Bureau of Mines since its establishment has always taken an active interest in the utilization of lignite and in the development of the lignite deposits of the United States. Extensive lignite fields occur in the west central States, notably in North Dakota, Montana, Wyoming, Colorado, and Texas; there are smaller areas in several other Sates, some of which are widely separated."
Date:
1923
Creator:
Babcock, E. J. & Odell, W. W.
System:
The UNT Digital Library
Experimental Simulation of Plateau Type Uranium Deposits
From abstract: Experimental simulation of Colorado Plateau type uranium deposits is divided into seven parts. The first three summarize the essential features of geological occurrence for the ores. The last four parts outline the results of experimental investigation arranged according to each geological group of features influencing mode of occurrence.
Date:
January 1953
Creator:
Bain, George W.
System:
The UNT Digital Library
Uranium Deposits in Southwestern Colorado Plateau
Abstract: The southwestern part of the Colorado Plateau province was studied to test results from experimental simulation of Colorado Plateau type uranium deposits and to search out additional agents influencing uranium precipitation which might be investigated experimentally.
Date:
August 1952
Creator:
Bain, George W.
System:
The UNT Digital Library
Distribution and Thickness of Salt in the Paradox Basin of Southwestern Colorado and Southeastern Utah, A Preliminary Report
The following report covers investigation work done on the distribution of thick deposits of salt that had occurred in the Paradox member of the Hermosa formation of Pennsylvanian age in an area nearly 12,000 square miles of southwestern Colorado and southeastern Utah.
Date:
February 1957
Creator:
Baltz, Elmer H.
System:
The UNT Digital Library