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General and Engineering Geology of the Wray Area, Colorado and Nebraska

Description: From abstract: Most of the formations in the Wray area are fair foundation materials, although good construction materials are scarce. The gravel of the Grand Island formation and the gravels in the Ogallala formation contain large quantities of clay, silt, sand, and calcium carbonate, and have very few pebbles larger than one-half inch in diameter.
Date: 1953
Creator: Hill, Dorothy Rachel & Tompkin, Jessie M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranophane at Silver Cliff Mine, Lusk, Wyoming

Description: Abstract: The uranium deposit at the Silver Cliff mine near Lusk, Wyo., consists primarily of uranophane which occurs as fracture fillings and small replacement pockets in faulted and fractured calcareous sandstone of Cambrian(?) age. The country rock in the vicinity of the mine is schist of pre-Cambrian age intruded by pegmatite dikes and is unconformably overlain by almost horizontal sandstone of Cambrian(?) age. The mine is on the southern end of the Lusk Dome, a local structure probably rel… more
Date: 1954
Creator: Wilmarth, Verl R. & Johnson, Donald H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium Deposits in Fall River County, South Dakota

Description: From abstract: In 1951 uranium deposits containing carnotite were discovered in the southern Black Hills near Edgemont, Fall River County, S. Dak. Many carnotite deposits have since been found in sandstones in the Inyan Kara group of Early Cretaceous age, and uranium-bearing material has been discovered in the Minnelusa sandstone of Pennsylvanian age and the Deadwood formation of Cambrian age in the southern Black Hills. Ore has been produced only from the Inyan Kara group, mostly within an are… more
Date: 1955
Creator: Bell, Henry & Bales, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carnotite-Bearing Sandstone in Cedar Canyon, Slim Buttes, Harding County, South Dakota

Description: From abstract: Carnotite-bearing sandstone and claystone have been found in the Chadron formation of the White River group of Oligocene age in the southern part of the Slim Buttes area, Harding County, S. Dak. The carnotite is an efflorescent yellow coating on lenticular silicified sandstone. Locally, the mineralized sandstone contains 0.23 percent uranium. The uranium and vanadium ions are believed to have been derived from the overlying mildly radioactive tuffaceous rocks of the Arikaree form… more
Date: 1955
Creator: Gill, James R. & Moore, George William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Criteria for Outlining Areas Favorable for Uranium Deposits in Parts of Colorado and Utah

Description: Abstract: Most of the uranium deposits in the Uravan and Gateway mining districts are in the persistent upper sandstone stratum of the Salt Wash member of the Morrison formation. Areas in which this stratum is predominantly lenticular have been differentiated from areas in which the stratum is predominantly nonlenticular. The most favorable ground for uranium deposits is in areas of lenticular sandstone where the stratum is underlain by continuous altered greenish-gray mudstone. Ore is localize… more
Date: 1955
Creator: McKay, E. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium-Bearing Nickel-Cobalt-Native Silver Deposits, Black Hawk District, Grant County, New Mexico

Description: From abstract: The ore deposits are in fissue veins that contain silver, nickel, cobalt, and uranium minerals. The ore minerals, which include native silver, argentite, niccolite, millerite, skutterudite, nickel skutterudite, bismuthinite, pitchblende, and sphalerite, are in a carbonate gangue in narrow, persistent veins, most of which trend northeast. Pitchblende has been identified in the Black Hawk and the Alhambra deposits and unidentified radioactive minerals were found at five other local… more
Date: 1956
Creator: Gillerman, Elliot & Whitebread, Donald Harvey
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radioactive Deposits in New Mexico

Description: From abstract: Forty-five areas of radioactivity in New Mexico had been investigated by government geologists or reported in the geologic literature before 1952. 21 areas contained visible uranium minerals and one contained thorium minerals. The occurrences were in the northwestern, north-central, central, southwestern, and southeastern parts of the State.
Date: 1956
Creator: Lovering, T. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pegmatites of the Crystal Mountain District, Larimer County, Colorado

Description: From abstract: The Front Range of Colorado is composed chiefly of schists of the Idaho Springs formation of pre-Cambrian age which have been intruded by a variety of granitic batholiths. In the Crystal Mountain district the Mount Olympus granite, a satellite of Fuller's Longs Peak batholith, forms sills and essentially concordant multiple intrusions in quartz-mica schist that dips southward at moderate to steep angles. A great number of pegmatites accompanied and followed the intrusion of the s… more
Date: 1955
Creator: Thurston, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fluorspar Deposits in Western Kentucky: Part 1

Description: From introduction: The need for fluorspar in the manufacture of open-hearth steel, hydrofluoric acid, aluminum, certain insecticides, refrigerants and airconditioning compounds, welding rods, 100-octane gasoline, and many other products necessary to the prosecution of World War II resulted in unprecedented demands for this commodity. To help increase production to meet these demands, the War Production Board in 1942 asked the United States Geological Survey to plan a comprehensive study of the … more
Date: 1955
Creator: Williams, James Steele; Duncan, Helen & Hardin, George C., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fluorspar Deposits in Western Kentucky: Part 2

Description: From abstract: The central part of the Commodore fault system is in the western Kentucky fluorspar district, in Crittenden County, about 6 miles northwest of Marion. It has yielded from 30,000 to 40,000 tons of crude fluorspar and nearly 20,000 tons of zinc ore. Limestones, sandstones, and shales of the Meramec, Chester, and Pottsville groups of Carboniferous age crop out as relatively flat-lying beds, except near faults. The rocks are transected by high-angle normal faults. The main faulted zo… more
Date: 1954
Creator: Trace, Robert D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fluorspar Deposits in Western Kentucky: Part 3

Description: Abstract: The Moore Hill fault system in the central part of the Kentucky-Illinois fluorspar field is about 26 miles long. Fluorspar has been produced from a part nearly 5 miles long, and since mining began in 1899 this system has yielded more than 300,000 tons of fluorspar. Lead and zinc sulfides commonly are found in the ore, but only rarely do they occur in sufficient quantity to be worth recovering. The productive part of the fault system was mapped and the properties and principal mines de… more
Date: 1954
Creator: Thurston, William R.; Hardin, George C., Jr. & Klepser, Harry J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnesite Deposits of Central Ceará, Brazil

Description: From introduction: The purpose of this study was to investigate the quantity and quality of [Central Ceara, Brazil] magnesite, and the writer concludes that this group of deposits constitutes one of the major reserves of high-grade magnesite in the Western Hemisphere. The ore could be used in the production of any commercial grade of magnesia with little or no beneficiation. Soil and alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open pits.
Date: 1950
Creator: Bodenlos, Alfred J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology of the Happy Jack Mine, White Canyon Area, San Juan County, Utah

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tin Deposits of Durango, Mexico

Description: From abstract: This report summarizes the economic possibilities of the tin deposits of the Estado de Durango, Mexico. It describes in detail many deposits in the leading districts, which were examined in 1944, and briefly reviews some reports on undeveloped occurrences in the southern and western parts of the State. The general conclusion is that tin will continue to be produced by hand methods for many years, but probably at a decreasing rate, because the placer grounds which have always prod… more
Date: 1950
Creator: Smith, Ward C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gypsum Deposits near Iyoukeen Cove, Chicagof Island, Southeastern Alaska

Description: From abstract: Two deposits of high-grade gypsum are located near tidewater at Iyoukeen Cove, on the northeastern part of Chichagof Island, southeastern Alaska. A group of claims, formerly operated by the Pacific Coast Gypsum Co., was acquired by the Kaiser Gypsum Division of Kaiser Industries, Inc., during World War II. Claims at the other deposit are held by Dave Housel of Juneau and Seattle, Washington, in the name of the Gypsum-Camel group.
Date: 1953
Creator: Flint, G. M., Jr. & Cobb, E. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gypsiferous Deposits on Sheep Mountain, Alaska

Description: 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 con… more
Date: 1951
Creator: Eckhart, Richard A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Permafrost on Cultivated Fields, Fairbanks Area, Alaska

Description: From introduction: This report describes the destructive effect of permafrost on cultivated fields and delineates the parts of the Fairbanks area which are least suitable for agriculture because of the character of the underlying permafrost. Studies by the author indicate that agriculture will be affected by similar permafrost conditions throughout areas on the north side of the Tanana Valley within 100 miles of Fairbanks.
Date: 1954
Creator: Péwé, Troy Lewis
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Eastern Front of the Bitterroot Range, Montana

Description: From abstract: The origin of the gneissic rocks on the eastern border of the Idaho batholith in the Bitterroot Range, near Hamilton, Mont., has long been in dispute. Lindgren regarded these rocks as the product of stresses related to a normal fault along the front of the range with an eastward dip of about 150. He thought both the hanging wall and the footwall had moved, with a total displacement along the fault plane of at least 20,000 feet. The faulting was believed to have been so recent as … more
Date: 1952
Creator: Ross, Clyde P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology of the Eastern Part of the Alaska Range and Adjacent Area

Description: From abstract: This paper describes the geology of a part of the Alaska Range, extending from the Delta River to the international boundary between Alaska and Canada, and of an additional area that includes part of the Wrangell Mountains and the upper Copper River valley.
Date: 1954
Creator: Moffit, Fred H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology of the Prince William Sound Region, Alaska

Description: From introduction: This paper describes the geology of the Prince William Sound region, a part of south-central Alaska. It deals with the rocks of a section of the Coast Ranges that has been studied by various geologists over a period of many years and still offers basic problems that are unsolved. Prince William Sound is well known for its mining activities, but the intention here is to describe the areal and stratigraphic geology of the district rather than its mineral resources and to presen… more
Date: 1954
Creator: Moffit, Fred H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology and Coal Deposits, Jarvis Creek Coal Field, Alaska

Description: From abstract: The Jarvis Creek coal field lies on the north side of the Alaska Range, between latitudes 63 35' and 63*45' N., and longitudes 145*40' and 145*50' W. It is 3 to 6 miles east of the Richardson Highway. The coal field is about 16 square miles in area, the major part of which is a rolling plateau that slopes gently northward and is bounded on the east, south. and west by bluffs facing Jarvis Creek, Ruby Creek, and the Delta River.
Date: 1955
Creator: Wahrhaftig, Clyde & Hickcox, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology and Oil Resources of the Jonesville District, Lee County, Virginia

Description: From abstract: The Jonesville district is in central Lee County in the extreme southwest corner of Virginia. It includes an area that is 25 miles long from northeast to southwest and averages 6 miles in width. Most of the district lies within a broad lowland named the Powell Valley, but the district includes Wallen Ridge, which bounds Powell Valley on the southeast.
Date: 1954
Creator: Miller, Ralph L. & Brosgé, William Peters
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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