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Origin of Primary and Diagenetic Carbonates in the Lacustrine Green River Formation (Eocene), Colorado and Utah
A report that used isotopic, mineralogic, and oil-yield data to delineate major hydrologic states, establish the origin of carbonate mineral phases, and determine the controls on the geochemical cycles of carbon and oxygen.
Date:
1996
Creator:
Pitman, Janet K.
Object Type:
Report
System:
The UNT Digital Library
Geology and Mineral Fuels of Parts of Routt and Moffat Counties, Colorado
A report about minerals fuels and geologies located in parts of the Routt and Moffat counties, Colorado.
Date:
1955
Creator:
Bass, N. Wood; Eby, J. Brian & Campbell, Marius R.
Object Type:
Report
System:
The UNT Digital Library
Nomenclature of Precambrian Rocks in Colorado
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 establishment of a comprehensive nomenclature. Numerous formal names that have been applied to elements of the Precambrian assemblage are appraised and classified in a table, and eight names are abandoned."
Date:
1977
Creator:
Tweto, Ogden
Object Type:
Report
System:
The UNT Digital Library
Minerals of Colorado: A 100-Year Record
A report about the known facts about the minerals that make up the rocks, soils, and ore deposits of Colorado.
Date:
1961
Creator:
Eckel, Edwin B.
Object Type:
Report
System:
The UNT Digital Library
Stratigraphy of the State Bridge Formation in the Woody Creek Quadrangle, Pitkin and Eagle Counties, Colorado
A report about the lithologic units within a red-bed sequence that help to interpret the history and structure of the Woody Creek quadrangle, west-central Colorado.
Date:
1971
Creator:
Freeman, Val I.
Object Type:
Report
System:
The UNT Digital Library
Stewart Gulch Tongue—A New Tongue of the Eocene Green River Formation, Piceance Creek Basin, Colorado
A report about mapping in the northern and central parts of the Piceance Creek basin of northwestern Colorado where several relatively thin dominantly marlstone units tongue northward into the Eocene Uinta Formation.
Date:
1977
Creator:
Hail, William J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Coughs Creek Tongue--A New Tongue of the Eocene Green River Formation, Piceance Creek Basin, Colorado
A report about the Coughs Creek Tongue which is a sequence of light-gray marlstone, locally containing beds of sandstone and siltstone, in the upper part of the Green River Formation.
Date:
1975
Creator:
O'Sullivan, Robert B.
Object Type:
Report
System:
The UNT Digital Library
Geochemical, Biogeochemical, and Sedimentological Studies of the Green River Formation, Wyoming, Utah, and Colorado
A report about new geochemical, biogeochemical, and sedimentological data gathered from the depositional basins of the Green River Formation.
Date:
1991
Creator:
Tuttle, Michele L.
Object Type:
Report
System:
The UNT Digital Library
Surficial Geology of the Louisville Quadrangle Colorado
A report about superficial deposits in the Louisville quadrangle, Colorado. They indicate early Pleistocene valley incisions bellow pediments and late Pleistocene valley filling and upland eolian deposition.
Date:
unknown
Creator:
Malde, Harold E.
Object Type:
Report
System:
The UNT Digital Library
Sugar Loaf and St. Kevin Mining Districts Lake County, Colorado
A report about the Sugar Loaf and St. Kevin mining districts located in Colorado. Most of the bedrock consists of pre-Cambian schist, gneiss, granite, and pegmatite.
Date:
1955
Creator:
Singewald, Quentin D.
Object Type:
Report
System:
The UNT Digital Library
Stratigraphic Nomenclature of the Thirtynine Mile Volcanic Field, Central Colorado
A report about the geology, composition, and stratigraphic nomenclature of the thirtynine mile volcanic field in central Colorado.
Date:
1974
Creator:
Epis, Rudy C. & Chapin, Charles E.
Object Type:
Report
System:
The UNT Digital Library
Environmental Considerations of Active and Abandoned Mine Lands: Lessons from Summitville, Colorado
A report about some of the environmental impacts of the Summitville open-pit mine that was abandoned after 1992.
Date:
1995
Creator:
King, Trude V. V.
Object Type:
Report
System:
The UNT Digital Library
Results of U.S. Geological Survey Exploration for Uranium-Vanadium Deposits in the Club Mesa Area, Uravan District, Montrose County, Colorado
From introduction: This report summarizes some of the results of U. S. Geological Survey investigations in the Club Mesa area and presents a compilation of available geologic data that would be helpful in future exploration. Detailed geologic logs of U. S. Geological Survey holes drilled in the Club Mesa area on public land that is no longer withdrawn from mineral entry are on open file for public inspection in the U. S. Geological Survey office, Grand Junction, Colorado.
Date:
May 1957
Creator:
Boardman, Robert L.; Litsey, Linus R. & Bowers, Howard E.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Geologic Map of the Mount Peale 1 Northeast Quadrangle, San Juan County, Utah and Montrose County, Colorado
This is a preliminary geologic map, scale 1:24,000, of the Mt. Peale 1 NE Quadrangle in San Juan County, Utah and Montrose County, Colorado.
Date:
1954
Creator:
Carter, William Douglas; Gualtieri, James Louis & Shoemaker, Eugene M.
Object Type:
Map
System:
The UNT Digital Library
A Reconnaissance for Uranium in Carbonaceous Rocks in Southwestern Colorado and Parts of New Mexico
From abstract: Coal and carbonaceous shale of the Dakota formation of Cretaceous age were examined for radioactivity in the Colorado Plateau of southwestern Colorado and northwestern New Mexico during the summer of 1953.
Date:
February 1955
Creator:
Baltz, Elmer H., Jr.
Object Type:
Report
System:
The UNT Digital Library
Tectonic Map of Northern Colorado and Northeastern Utah, Showing the Distribution of Uranium Deposits
From introduction: The compilation of the tectonic map of northern Colorado and northeastern Utah (area h, fig. 2) was done by the U. S. Geological Survey on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission. Structures shown on the map have been obtained from published geologic maps, and from unpublished data supplied by government agencies, private companies, and independent geologists. The various structures of the Foreland can be divided into three large classes to show the relation of uranium deposits to the structural pattern.
Date:
April 1956
Creator:
Osterwald, Frank W. & Dean, Basil G.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Report on 1952 Investigations in the Colorado Front Range
From abstract: Five mines in north-central Clear Creek County- Golden Calf, Gomer, Martha E., Golden Glen, and Diamond Mountain--have high anomalous radioactivity and are considered potential sources of uranium.
Date:
December 1952
Creator:
Sims, P. K.; Harrison, Jack Edward & Moore, Frank B.
Object Type:
Report
System:
The UNT Digital Library
Geophysical Investigations on the Gramlich Group, Paradox District, Montrose County, Colorado
From abstract: The U. S. Geological Survey made a geophysical investigation on the Gramlich group, Paradox district, Montrose County, Colo., during the period May 26 to July 11, 1952.. Electrical resistivity and self-potential surveys were made to determine the thickness of the upper Salt Wash sandstone and to test electrical prospecting methods in an area of shallow overburden. The investigations were made in conjunction with a diamond-drilling program.
Date:
March 1953
Creator:
Black, R. A.
Object Type:
Report
System:
The UNT Digital Library
A Preliminary Summary Report of a Reconnaissance of Sandstone-Type Copper-Uranium Deposits in Parts of New Mexico, Colorado, Utah, Idaho, and Wyoming
From introduction: The reconnaissance was made during the summer of 1951 by two field parties: (1) a reconnaissance in parts of Oklahoma, Texas, New Mexico, and Arizona by Russell Gibson, and (2) Geological Survey reconnaissance in parts of New Mexico,.Colorado, Utah, Idaho, and Wyoming (by the writers), the results of which are summarized in this report.
Date:
December 1951
Creator:
Gott, Garland B. & Erickson, Ralph Leroy
Object Type:
Report
System:
The UNT Digital Library
The Uranium Occurrences in the Martha E Prospect, Lawson-Dumont District, Clear Creek County, Colorado
From introduction: The Martha E prospect, in Spring Gulch about three and one-half miles southwest of Idaho Springs, Colo. (fig. 1), is on a claim, originally called the Daisy Freese, which was first prospected by the Stanley Mines. The occurrence of radioactive minerals in the adit was called to the attention of the U. S. Geological Survey in 1950 by the owners of the claim. The Survey's Trace Elements Section Washington Laboratory identified metatorbernite, autunite, and sooty pitchblende.
Date:
April 1952
Creator:
Harrison, Jack Edward
Object Type:
Report
System:
The UNT Digital Library
Results of Exploration at the Old Leyden Coal Mine, Jefferson County, Colorado
From abstract: Six diamond-core holes totaling 2, 201 feet were drilled by the U. S. Bureau of Mines under contract to the U. S. Atomic Energy Commission at the Old Leyden coal mine, Jefferson County, Colo. The holes were spotted on the basis of geologic mapping by the U. S. Geological survey and were drilled to explore the lateral and downward extent of a uranium-bearing coal and the associated carnotite deposits in the adjacent sandstone. The data obtained from the diamond-core holes helped to explain the geology and structural control of the deposit. The uranium is most abundant in a coal bed that in places has been brecciated by shearing, and then altered to a hard, dense, and silicified rock. The uraniferous coal is in the nearly vertical beds of the Laramie formation of Upper Cretaceous age,
Date:
December 1952
Creator:
Gude, Arthur J., III & McKeown, F. A.
Object Type:
Report
System:
The UNT Digital Library
Interim Report on Exploration of the Moon Mesa and Horse Mesa Areas, Mesa and Montrose Counties, Colorado
From introduction: This report summarizes the results of diamond-drill exploration by the U. S. Geological Survey in the vicinity of Moon and Horse Mesas during the period November 14, 1950 to January 26, 1952.
Date:
1952
Creator:
Stewart, John H.
Object Type:
Report
System:
The UNT Digital Library
Tectonic Map of the Colorado Plateau
This is a tectonic map of the Colorado Plateau.
Date:
1952
Creator:
Luedke, Robert G. & Shoemaker, E. M.
Object Type:
Map
System:
The UNT Digital Library
Preliminary Report on Exploration in the Spud Patch Area, San Miguel County, Colorado
From introduction: From November 1949 to May 1952, the U. S. Geological Survey explored the Spud Patch area by diamond drilling to find carnotite deposits that would make new mines and to appraise the reserves of the area. Previous work and a brief outline of the general geology of the area have been reported (Bell and Icke, 1950; and Bell, 1952).
Date:
1952
Creator:
Hilpert, Lowell S.
Object Type:
Report
System:
The UNT Digital Library