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Geology of Devils Tower National Monument, Wyoming
From abstract: Devils Tower is a steep-sided mass of igneous rock that rises above the surrounding hills and the valley of the Belle Fourche River in Crook County, Wyo. It is composed of a crystalline rock, classified as phonolite porphyry, that when fresh is gray but which weathers to green or brown. Vertical joints divide the rock mass into polygonal columns that extend from just above the base to the top of the Tower.
Date:
1956
Creator:
Robinson, Charles Sherwood
Object Type:
Report
System:
The UNT Digital Library
Coal Geology of the White Oak Quadrangle, Magoffin and Morgan Counties, Kentucky
From abstract: The White Oak quadrangle lies near the western edge of the eastern Kentucky coalfield and includes approximately 59 square miles of parts of Magoffin and Morgan Counties, Ky. The outcropping rocks are equivalent to most of the Breathitt formation of Pennsylvanian age. The regional southeast dip of the rocks is interrupted by the Irvine-Paint Creek fault, the Caney anticline, the Grape Creek syncline, and the Johnson Creek fault.
Date:
1957
Creator:
Adkison, W. L.
Object Type:
Report
System:
The UNT Digital Library
Fluorspar Deposits Near Meyers Cove, Lemhi County, Idaho
Abstract: The fluorspar deposits near Meyers Cove, Lemhi County, Idaho, are localized along three groups of shear zones: one group strikes northeast and dips steeply northwestward, another strikes northeast and dips gently northwestward, and the third strikes northwest and dips gently southwestward. The country rocks are tuffs and flows of the Casto volcanics of Permian(?) age and the Challis volcanics of late Oligocene or early Miocene age. The known deposits are in a belt about 3 miles long and 2 miles wide and crop out at altitudes between 5,100 feet and 7,200 feet above sea level. The principal vein minerals are fluorite, chalcedony, and barite. The fluorite occurs as lodes, crusts around fragments of rock, and replacements of fine breccia. The lodes range in size from veinlets to vein zones several hundred feet long and as much as 20 feet wide and contain ore that ranges in grade from 40 percent to 85 percent CaF2; the average grade is about 50 percent CaF2.
Date:
1954
Creator:
Cox, D. C.
Object Type:
Report
System:
The UNT Digital Library
Niobium (Columbium) and Titanium at Magnet Cove and Potash Sulphur Springs, Arkansas
From Abstract: Niobium (columbium) and titanium occur in several minerals and rocks of the Magnet Cove and Potash Sulphur Springs areas. Niobium is in demand for use in high-temperature and noncreep steels; titanium metal is becoming an important structural material. The Magnet Cove and Potash Sulphur Springs areas are in central Arkansas between the communities of Malvern and Hot Springs. They are underlain by similar alkalic igneous complexes consisting of nepheline syenite, more basic alkalic rocks, and calcite rock or carbonatite. The igneous rocks transect sedimentary rocks of Paleozoic age and were truncated by erosion of Late Cretaceous age.
Date:
1954
Creator:
Fryklund, Verne Charles, Jr.; Harner, R. S. & Kaiser, E. P.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Happy Jack Mine, White Canyon Area, San Juan County, Utah
From abstract: The Happy Jack mine is in the White Canyon area, San Juan County, Utah. Production is from high-grade uranium deposits in the Shinarump conglomerate of Triassic age. The Shinarump strata range from 161/2 to 40 feet in thickness and the lower part of these beds fills an eastward-trending channel that is more than 750 feet wide and 10 feet deep.
Date:
1955
Creator:
Trites, Albert F., Jr. & Chew, Randall T., III
Object Type:
Report
System:
The UNT Digital Library
Gypsiferous Deposits on Sheep Mountain, Alaska
From abstract: Gypsum-bearing rocks crop out in Gypsum and Yellow Jacket Gulches, on Sheep Mountain, which is about 90 miles northeast of Anchorage, Alaska. The gypsiferous rock occurs in deposits of irregular shape in the greenstone. Both the gypsiferous rock and the greenstone are hydrothermal alteration products of the volcanic rocks of Jurassic age which comprise the bulk of the mountain. Near-surface samples of the gypsiferous rock contained an average of 25 to 30 percent gypsum ; some contained as much as 50 percent. Quartz, alunite, clay, sericite, and pyrite are contaminating constituents of the ore. Six of the largest and most accessible of the gypsum deposits were mapped and calculations show that three of the deposits contain an aggregate of approximately 311,000 short tons of indicated gypsiferous rock and four of the deposits contain 348,000 short tons of inferred gypsiferous rock.
Date:
1951
Creator:
Eckhart, Richard A.
Object Type:
Report
System:
The UNT Digital Library
Radioactivity Investigations at Ear Mountain, Seward Peninsula, Alaska, 1945
From abstract: Radioactive material in apparently significant amounts was recognized in heavy-mineral concentrates from the gravels of four streams that head in Ear Mountain, Alaska, when collections of the United States Geological Survey were examined for radioactivity in the winter of 1944-45. This area, on the north side of the Seward Peninsula, attracted attention in 1901-02 when cassiterite was discovered in the streams. Subsequent attempts were made to develop copper- and tin-bearing lode deposits.
Date:
1955
Creator:
Killeen, P. L. & Ordway, Richard J.
Object Type:
Report
System:
The UNT Digital Library
Geology and Ore Deposits in the Reid Inlet Area Glacier Bay, Alaska
From abstract: A gold-bearing area of about 7% square miles near the head of Glacier Bay between Reid and Lamplugh Glaciers was first discovered by Mr. Joseph Ibach in 1924. The dominant rock type in the area is granodiorite, which is intruded into bedded rocks that may be of Paleozoic age. The bedded rocks consist of conglomerate, limestone, and black graphitic schist. A light-colored quartz diorite younger than the granodiorite crops out south of the mapped area.
Date:
1959
Creator:
Rossman, Darwin Lucian
Object Type:
Report
System:
The UNT Digital Library
Geology of Geikie Inlet Area, Glacier Bay, Alaska
From abstract: The Geikie Inlet area is in the Glacier Bay region of southeastern Alaska, about 100 miles northwest of the city of Juneau. The area is mountainous with relief of slightly more than 5,000 feet, and the coastline is deeply indented by fiords and inlets. Most of the western half of the area is covered by glaciers.
Date:
1959
Creator:
Seitz, James F.
Object Type:
Report
System:
The UNT Digital Library
Trace Elements Reconnaissance on the South Fork of Quartz Creek, Northeastern Seward Peninsula, Alaska
Abstract: Two uranium-bearing minerals, uranothorianite and thorite (?), were found in the stream gravels of the main branch of the South Fork of Quartz Creek, a tributary of the Kiwalik River. Although the bedrock source of the minerals was not located, the radioactive material was traced in slope wash well above the stream gravel. A detailed investigation of the area with more sensitive counters might reveal the source of the minerals and localities where the minerals are sufficiently concentrated to be minable.
Date:
May 1950
Creator:
Killeen, P. L. & White, Max Gregg
Object Type:
Report
System:
The UNT Digital Library
Radiometric Examination of Rock Specimens from Mount McKinley, Alaska
Abstract: A suite of 50 rock specimens, collected by the 1947 Washburn Mount McKinley Expedition, was scanned radiometrically. The maximum radioactivity observed in any one of the specimens was about twice background. Radiometric analyses of the most radioactive samples show that a sample of vein quartz coated with manganese oxide contains 0.009 percent equivalent uranium and that the maximum equivalent uranium content of granitic rock types is .004 percent. The radioactivity of the manganese-stained quartz is probably due to traces of uranium in the manganese mineral, whereas that of the granitic rocks is due to radioactive accessory minerals.
Date:
February 1951
Creator:
Matzko, John J.
Object Type:
Report
System:
The UNT Digital Library
Selected Papers on Uranium Deposits in the United States
From foreword: The six papers included in this report were prepared in an attempt to summarize briefly, and make available to the public, part of the information concerning uranium deposits that is in unpublished reports of work done by the U. S. Geological Survey under the auspices of the Manhattan Engineer District, and later, the U. S. Atomic Energy Commission.
Date:
May 1952
Creator:
Kaiser, E. P.; King, Robert U.; Wilmarth, V. R.; Stugard, Frederick, Jr.; Wyant, Donald G.; Gott, Garland B. et al.
Object Type:
Report
System:
The UNT Digital Library
Progress Report on Geologic Studies in the Capitol Reef Area, Wayne County, Utah
From abstract: During 1951 about 60 square miles of the Capitol Reef area, Wayne County, Utah, the northern end of the Waterpocket Fold, was mapped by plane-table methods on a scale of 1:62, 500. Formations, with an approximate aggregate thickness of 3, 200 feet, range from the Coconino sandstone of Permian age to the Navajo sandstone of Jurassic (?) age. About 35 linear miles of Shinarump conglomerate of Triassic age was examined in detail. Cliffs 900 to 1, 000 feet high form the west face of Capitol Reef, which is on the east and northeast flanks of a structural and topographic dome, The uranium deposits are in the basal part of the Shinarump conglomerate. Zippeite and metatorbernite are the uranium minerals found, and are associated with copper minerals, carbonaceous matter, clay beds, a thick bleached zone at the top of the Moenkopi formation, and channels or scours in the top of the Moenkopi. The highest radioactivity is in a clay bed at the base of the Shinarump conglomerate, and was detected at 7 localities between Grand Wash and Capitol Gorge, at the Birch Spring prospect in Moonie Draw, and at the Oyler mine in Grand Wash.
Date:
August 1952
Creator:
Smith, J. Fred, Jr.; Hinrichs, E. Neal & Luedke, Robert G.
Object Type:
Report
System:
The UNT Digital Library
The Geological Survey's Work on the Geology of Uranium and Thorium Deposits
From abstract: The Geological Survey has been studying the geology of uranium and thorium continuously since 1939, when it began a comprehensive investigation of the vanadium-uranium deposits of the Colorado Plateau. Greatly increased demand for uranium arising from the advent of controlled fission in 1942 resulted in widening of the study in 1944 to include other possible sources and in further expansion on behalf of the U. S. Atomic Energy Commission since 1947. The wide variety of materials investigated in this study are embraced by five somewhat arbitrary groups of related types of deposits as follows: (1) Igneous rocks, pegmatites, veins, and related deposits; (2) Deposits in sandstone of carnotite, copper-uranium, and other minerals; (3) Other consolidated sedimentary rocks; (4) Placers; and (5) Natural fluids.
Date:
1952
Creator:
Butler, Arthur P., Jr.
Object Type:
Report
System:
The UNT Digital Library
Distribution and Origin of Phosphate in the Land-Pebble Phosphate District of Florida
From abstract: The land-pebble phosphate district of Florida is a part of the Gulf Coastal Plain. The geologic formations cropping out in the district are the Miocene Hawthorn, Pliocene Bone Valley, and Pleistocene terrace sands. The Bone Valley formation consists of a lower strongly phosphatic unit and an upper less phosphatic unit. This paper is concerned principally with the lower unit, which contains the bulk of the minable phosphate deposits of the district.
Date:
June 1952
Creator:
Cathcart, James B. & Davidson, David F.
Object Type:
Report
System:
The UNT Digital Library
Geological Survey Investigations in the U12b.01 Tunnel, Nevada Test Site
From introduction: This report includes a brief description of the stratigraphy and structure, and data on petrology, mineralogy, and chemical and physical properties of the rocks that are exposed in the U12b.01 tunnel of the U12b (Rainier) tunnel system.
Date:
March 1959
Creator:
Diment, William H.; Wilmarth, V. R.; McKeown, F. A.; Dickey, D. D.; Botinelly, Theodore; Hinrichs, E. Neal et al.
Object Type:
Report
System:
The UNT Digital Library
Mineralogical Classification of Uranium-Vanadium Deposits of the Colorado Plateau
Abstract: The uranium deposits of the Colorado Plateau contain suites of minerals that are the result of different stages of oxidation of deposits with different elemental composition. A classification based on composition and stage of oxidation is presented.
Date:
January 1957
Creator:
Botinelly, Theodore & Weeks, Alice D.
Object Type:
Report
System:
The UNT Digital Library
Possible Test Sites in Granitic Rocks in the United States
Introduction: This report describes areas of granitic rocks suitable for underground nuclear tests within Federally-controlled land in the continental limits of the United States. This information was requested of the U. S. Geological Survey by the Albuquerque Operations Office of the U. S. Atomic Energy Commission, and was compiled during March 1959 by D. C. Alvord, W. J. Carr, P. M. Hanshaw, S. P. Kanizay, C. S. Robinson, R. W. Schnabel, J. A. Sharps, and C. T. Wrucke.
Date:
July 1959
Creator:
Alvord, Donald C.; Carr, Wilfred James; Hanshaw, Penelope M.; Kanizay, Stephen P.; Robinson, Charles Sherwood; Schnabel, Robert W. et al.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Marble Exploration Hole 4, Nevada Test Site, Nye County, Nevada
From introduction: This report summarizes the information obtained during preparation of the lithologic log of the core and presents results of chemical analyses of marble samples collected from surface near the drill hole. The report was prepared by the U.S. Geological Survey on behalf of the Albuquerque Operations Office, U.S. Atomic Energy Commission.
Date:
October 1959
Creator:
McKeown, F. A. & Wilmarth, V. R.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Geologic Map of the Hulett Creek Mining Area, Crook County, Wyoming
Preliminary geologic map of the Hulett Creek mining area in Crook County, Wyoming. Provides features of the Fall River formation's measurements and contents.
Date:
1956
Creator:
Robinson, Charles Sherwood & Goode, Harry D.
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
Uranium Deposits of the Northern Part of the Boulder Batholith, Montana
From abstract: Uranium minerals and radioactivity anomalies occur in many silver lead veins and chalcedony veins and vein zones in the Boulder batholith of southwestern Montana.
Date:
September 1955
Creator:
Becraft, George E.
Object Type:
Report
System:
The UNT Digital Library
Tectonic Map of Western North Dakota Showing the Distribution of Uranium Deposits
From introduction: A tectonic map for the northern part of the Cordilleran Foreland / is being compiled to aid in establishing the geologic setting of uranium deposits within the region and to determine relationships, if any, that exist between the distribution of uranium deposits and the regional tectonic pattern (Osterwald, 1955).
Date:
January 1956
Creator:
Osterwald, Frank W.
Object Type:
Report
System:
The UNT Digital Library
Tectonic Map of Western Nebraska and Northwestern Kansas Showing the Distribution of Uranium Occurrences
From introduction: The Cordilleran Foreland (King. 1951, p. 58-62; Horberg and others, 1949, p. 192194) forms a broad north-south belt, parallel to and east of the Cordilleran geanticline (fig. 1), in which the predominant geologic structure is a series of anticlinal mountains and broad asymmetric basins that contrast sharply with the folds and overthrusts related to the Cordilleran geanticline. A tectonic map of most of the Cordilleran Foreland (fig. 2) is being compiled as an aid to study the geologic setting of uranium deposits within the region, and to determine what relationships may exist between the distribution of uranium deposits and the regional tectonic pattern (Osterwald, 1955). The map will show the distribution of faults, uranium deposits, areas of volcanic activity, and crestlines and troughs of folds.
Date:
May 1956
Creator:
Osterwald, Frank W. & Dean, Basil G.
Object Type:
Report
System:
The UNT Digital Library