Technical Report Archive & Image Library (TRAIL) - 142 Matching Results
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- Airborne Radiometric Reconnaissance in the Wind River Basin, Wyoming
- Abstract: A program of airborne radiometric reconnaissance for uranium was conducted in eastern Fremont and western Natrona Counties, in central Wyoming, during the summer and fall of 1954, by the U.S. Atomic Energy Commission.
- Airborne Radiometric Reconnaissance of Parts of Central Montana
- This report provides the results to an airborne radiometric reconnaissance made in central Montana, the Sweetgrass Hills and Arch area, and Clancy area of the Boulder batholith that was completed in October 1953. This report is divided into three parts, each area is discussed separately according to its geology, the airborne procedures employed, and the conclusions reached.
- Airborne Radiometric Survey in Northern New Jersey and Southeastern New York
- Abstract: "An airborne radiometric survey of the pre-Cambrian Highlands of New Jersey and New York, and Triassic Newark Basin located in 14 radiometric anomalies in the Highlands. No commercial deposit of uranium discovered. Ground checks revealed that most anomalies were caused by large masses or residual boulders of slightly radioactive granitoid gneiss."
- Airborne Radiometric Survey of the East Flank of the Big Horn Mountains, Wyoming and Montana
- Abstract: An airborne radiometric survey of parts of the east flank of the Big Horn Mountains was begun on June 23, and completed on August 27, 1952. An area of approximately 250 square miles was covered, and only two anomalies were found in the entire area. Flight lines were arranged in accordance with the geology of the area, particular attention being given to formations the stratigraphic equivalents of which are known to be uranium bearing in other areas. Two additional zones of radioactivity were found by ground investigation, but assays from both the ground and the airborne discoveries showed no economic uranium deposits.
- Airborne Radiometric Survey of the Inyan Kara Group of the Black Hills, South Dakota and Wyoming
- This report presents the results of an airborne radiometric survey that was made of the Inyan Kara group in the Black Hills of South Dakota and Wyoming between March 5 to December 5, 1952.
- Airborne Reconaissance Survey of Northwestern Nevada
- This document reports a preliminary airborne reconnaissance survey that was conducted in the mountain ranges of the northwest portion of Nevada.
- Airborne Reconnaissance in Southwestern Arkansas
- Introduction: Reconnaissance for uranium in central and southwestern Arkansas was carried out as a joint project of the U.S. Atomic energy Commission and the U.S. Geological Survey during March and May 1954. The project was planned as an investigation of several areas of known abnormal radioactivity, and as a search for others, by airborne and ground radiometric reconnaissance.
- Airborne Reconnaissance in the Valley of Fire-Muddy Mountains Region, Nevada
- Abstract: The Valley of Fire-Muddy Mountains region, located 20 to 30 miles northeast of Las Vegas, Nevada, was given approximately 25-percent airborne radioactive coverage during the fall of 1954. Rocks in the area range from Cambrian to Miocene in age. Uranium was known to occur at two sedimentary horizons at the time the airborne program began. One new uranium-bearing sedimentary horizon was discovered by the airborne reconnaissance. Of 15 anomolies detected, only 11 were posted as the remainder were claimed at the time of the survey.
- Airborne Reconnaissance Project, Ruby Range and Sweetwater Basin, Montana
- Abstract: A low-level airborne radioactivity survey of parts of Beaverhead and Madison Counties in southwestern Montana was undertaken from June 6 to October 14, 1955. Flying centered around the Ruby Range-Sweetwater Basin area and concentrated on the Precambrian metamorphic complex and Tertiary lake-bed sediments. No commercial uranium deposits were discovered, and no extensions were found of the few known small occurrences. Five areas of high background detected through the survey were investigated on the ground.
- Airborne Reconnaissance Survey of Northwestern Arizona (Arizona Strip) and Southwestern Utah
- Abstract: From December 1953 to May 1954 an extensive airborne reconnaissance program was conducted in northwestern Arizona (Arizona Strip) and southwestern Utah. Five surface anomalies were detected, one of which has possible commercial value. All anomalies are within the boundaries of National Park Service jurisdiction, consequently, this report is not for public distribution until clearance is obtained from the National Park Service. A preliminary airborne reconnaissance program was also conducted in the Richfield area. No anomalies were discovered.
- Continuous Velocity Logging as Applied to Uranium Exploration
- Discussing velocity logging carried out during six weeks of fieldwork in 1955 through contracts with the Texas Company.
- Diamond drilling in the Silver Reef (Harrisburg) district and adjacent areas, Washington County, Utah
- A report discussing a diamond drilling project in the Silver Reef District and adjacent areas, with the propose to obtain geologic information as well as to further explore the Chinle formation for new ore bodies.
- Drilling at Dripping Springs, Emery County, Utah
- Discussing the diamond drilling projects of the Dripping Springs area of the San Rafael swell.
- Drilling at Green Vein Mesa, Emery County, Utah
- Discussing diamond drilling carried out at Green Vein Mesa in the San Rafael Swell.
- Drilling at Seven Mile Canyon, Grand County, Utah
- Discussing uranium deposits drilled at the Seven Mile Canyon in grand county, Utah.
- Drilling in the North Point No. 6 and Horn Channels, White Canyon, San Juan County, Utah
- Abstract: On March 7, 1953, after approximately three and one-half months, investigational drilling in the North Point No. 6 and Horn channels was completed.
- [Drilling Plans, Silver Cliff Mine]
- Maps show drilling plans in four areas of the the Silver Cliff Mine in Lusk, Wyoming.
- Drilling Recommendations, Dry Valley, San Juan County, Utah
- Discussing drilling recommendations for Dry Valley, in San Juan County, Utah
- Environment of Uranium Deposition in the Bull Canyon Area, Southwestern Colorado
- Summarizing the data on the uranium-vanadium deposits of the Bull Canyon area in Montrose and San Miguel Counties, Colorado.
- [Environment of Uranium Deposition in the Bull Canyon Area, Southwestern Colorado: Figures]
- The following document contains the 17 figures in relation to the report, Environment of Uranium Deposition in the Bull Canyon Area, Southwestern Colorado.
- Examination of Copper-Uranium Occurrences in the Willaha Area, Coconino County, Arizona
- Abstract: A study, consisting of field and laboratory work, was undertaken in an endeavor to establish possible structural mineralization controls associated with the copper-uranium occurrences in the Willaha area, Coconino County, Arizona. Uranium mineralization, apparent at present, is localized along small fissures and vugs and in certain beds and lenses of the middle member of the Kaibab formation(Permian). It is associated with copper and iron oxide staining. Though no definite ore controls were disclosed by this study, at least a limited program of shallow drilling is warranted on the property. This sub-surface exploration should determine possible extensions of known mineralized areas, explore surface radiometric anomalies, and provide data for the determination of possible guides to ore. Deeper exploration may encounter mineralization in other horizons of the Kaibab limestone.
- Examination of the Uranus Claim, near Summit Diggings, Kern County, California
- Discussing and investigation with the purpose of examining a uranium prospect which was reported to be in active development
- Exploration drilling in the Haystack Butte area, McKinley County, New Mexico
- The US Atomic Energy Commission conducted a drilling program in McKinley County, New Mexico, from August 19, 1953, through April 19, 1954, to explore the Jurassic Todilto limestone for uranium occurrences on the eastern, northeastern, northern and northwestern sides of Haystack Butte
- Figure 6- Proposed Drilling Area-Coal Creek Anticline- Rio Blanco County, Colorado
- Map showing the proposed drilling area, Coal Creek Anticline, Rio Blanco County, Colorado as part of a United States Atomic Energy Commission, Division of Raw Materials, Exploration Branch report.
- Final Report: Airborne Reconnaissance Project Dripping Spring, Quartzite, Gila County, Arizona
- Abstract: A low-level airborne radiometric survey of the younger pre-Cambrian Dripping Spring quartzite, undertaken in the mountainous region lying roughly 100 riles east of Phoenix, was completed June 3, 1955. Twenty-seven radioactive anomalies were located. To date seven of these have produced uranium ore, four more will probably become producers, and six others may possibly become producers. Flying was concentrated in the Dripping Spring quartzite, but reconnaissance flights were made over other formations. Private prospecting, both from the air and on the ground, increased considerably when the airborne project started. Eleven of the private discoveries have produced ore, and many others show considerable promise.
- Final Report on Interpretation and Evaluation of the Uranium Occurrences Near Goodsprings, Nevada
- From introduction: This report is based on the field and laboratory studies of the uranium mineralization in the vicinity of Goodsprings, Clark Co., Nevada. The location of the region is shown in figure 1.
- The Flat Top Uranium Mine, Grants, New Mexico
- From introduction: To improve understanding of uranium mineralization of the Todilto Limestone of Late Jurassic age in the Grants district, New Mexico, the mines active in 1957 were reviewed to determine the major types of deposits. A representative example of each type was selected and mapped in great detail to establish a prototype. It was hoped that the analysis of prototypes might shed considerable light on the mineralization process and aid evaluation of other deposits by offering a standard of comparison.
- Foothills Mine, Idledale District, Jefferson County, Colorado
- Discussing the geologic setting of the Foothills Mine, Idledale District, Jefferson County, Colorado
- Fracture Pattern Study, Bull Canyon, Montrose and San Miguel Counties, Colorado
- A study made of the joint patterns in four different formations exposed in Bull Canyon, and of favorable and unfavorable ground in the upper ore-bearing sandstone unit of the Salt Was member of the Jurassic Morrison formation.
- Fracture systems and tectonic elements of the Colorado Plateau
- A report regarding regional fracture systems mapped for an area of about 90,000 square miles, embracing most of the Colorado Plateau and small strips of the adjoining Rocky Mountains, by the use of aerial photographs and mosaics. The data interpreted from the photographically reduced to produce the final map.
- Geochemical and Geophysical Reconnaissance in Northern Peninsula Michigan and Northeastern Wisconsin
- Discussing water samples collected during a reconnaissance study for uranium, and the analysis of the samples.
- Geologic and Radiometric Reconnaissance Along the San Juan and Colorado Rivers Between Mexican Hat, Utah, and Lees Ferry Arizona
- Abstract: Ten days were spent during June 1955, examining the sedimentary rocks along the San Juan and Colorado Rivers between Mexican Hat, Utah, and Lee's Ferry, Arizona. The most favorable area for uranium deposits occurs in the Shinarump member of the Chinle formation between Clay Hills Crossing and Spencer Camp along the San Juan River. Mineralization is spotty and deposits are small and almost all below ore-grade. Only one small mine, the Whirlwind, is currently producing ore. Gray-green alteration of the underlying Moenkopi is moderately developed in the vicinity of the Whirlwind mine; elsewhere alteration is weakly developed.
- Geologic Outline of Peru
- Descriptions of the geology of Peru
- Geologic Reconnaissance of the Northwestern White River Plateau, Rio Blanco and Garfield Counties, Colorado
- Discussing a geologic reconnaissance of the northwestern White River Plateau, in Rio Blanco and Garfield counties, Colorado.
- Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico
- Results of a survey in the southwest segment of the Zuni Uplift sedimentary formations. It includes an overview of physical geography in the area, as well as economic geography, including mineral deposits.
- Geologic Reconnaissance of the Southwest Flank of the Zuni Uplift, New Mexico
- Report presenting the results of a survey in the southwest segment of the Zuni Uplift sedimentary formations. The report includes figures and plates that provide an overview of physical geography in the area, as well as economic geography, including mineral deposits.
- Geologic Study of the Bidahochi Diatreme
- Discussing an investigation made to search for the evidence of channels for hydrothermal uraniferous solutions in the diatremes of the Hopi Buttes volcanic field.
- Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico
- Although uranium gas first discovered in the Carrizo Mountains area in 1918, the ores were not developed until 1942. They have, however, been mined continuously since that time. Formations in the area range from the Pernian Cutler through the Cretaceous Mancos shale, and all are intruded by a dioritic laccolith and its related dikes. The older structures, which include the Defiance Uplift, the San Juan Basin, and the Four Corners Platform are somewhat disrupted by the effects of the intrusion. A number of mines are described and mineralogical and geochemical studies made are outlined. The primary uranium mineral is unknown, but the chief uranium ore-mineral is the secondary mineral, tyuyamunite. It is concluded that there is at least minor structural control of the ore bodies along sedimentary trends and joints, and that all ore bodies of 500 tons or more are on the Defiance monocline or its extensions. The uranium may have been syngenetic in the sediments, and redistributed by solutions or, more likely, that it rose vertically in hydrothermal solutions from the local intrusive bodies.
- Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico
- From Purpose, Scope, and Methods: The objective of this study was an evaluation of resources of the Carrizo Mountains area. Four factors: distribution of ore bodies, relation of uranium to the host rock, relation of ore to structure, and circumstances that might precipitate uranium were studied in search of data bearing on manner of distribution of ore, the time and causes of deposition, and the probable source of the uranium-bearing solutions.
- Geology and uranium occurrences in the Hite Section of the Glen Canyon Dan immersion area
- A report discussing a study made of the Hite Section of the Glen Canyon Dam Immersion area to evaluate uranium occurrences and potentials.
- Geology and uranium occurrences near Lakeview, Oregon
- Discussing a geologic investigation undertaken near Lakeview Oregon to study the unique occurrences of uranium found there, and to provide an appraisal of the uranium recourses of the area.
- Geology of Lukachukai Mountains Area, Apache County, Arizona
- From introduction: The purpose of this paper is to present the geologic facts which have been discovered thus far about the Lukachukai area and to draw conclusions about uranium mineralization. Basic data of general nature are included to facilitate the work of future geologists in this area who may find the information applicable to new ideas.
- Geology of the Green River Mining District, Emery and Grand Counties, Utah
- The purpose of this report is to present all pertinent geologic data on an area in which relatively imprtant uranium deposits are present.
- Geology of the Uranium Deposits in the Cochetopa District, Saguache County, Colorado
- Discussing the geology of uranium deposits in the Cochetopa District, in Saguache. County, Colorado
- Geology of the Uranium Deposits of the Lukachukai Mountains Area Apache County, Arizona
- Abstract: In a study of the comparative importance of sedimentary and tectonic ore controls and in search of data bearing on the origin of the deposits, ten mines in the Lukachukai Mountains, Apache County, Arizona were examined in detail. All commercial deposits in the area are in the Salt Wash Member of the Morrison Formation of Jurassic age. The ore bodies are elongate and horizontally lenticular in shape and consist of one or more ore pockets surrounded or separated by protore. The composite length of ore bodies consisting of two or more ore pockets separated by subore grade material ranges up to 1,100 feet; individual ore pockets range up to 350 feet in length. Elongation is usually at least three times the width and is parallel to paleostream depositional trends measured in and near the ore bodies. Claystone and/or siltstone units nearly always underlie and frequently overlie the host sandstone units. Ore occurs most frequently in trough-type, cross-stratified sandstone which fills scours and channels in the underlying claystone units. Lithofacies maps and mine mapping show that ore bodies are restricted to areas of rapid lateral color change which in general are also areas of rapid change in the ratio of mudstone to sandstone. Most ore bodies are located on the southwest flank of the Chuska syncline within a broad belt which trends nearly north-south across the southeast end of the Lukachukai Mountains. It is suggested that a set of shear joints served as vertical channelways for the distribution of migrating uraniferous ground water. Location of the ore belt is apparently controlled by the intersection of these shear joints and particularly favorable facies of the Salt Wash Member.
- Geology of Uranium Deposits in Tertiary Lake Sediments of Southwestern Yavapai County, Arizona
- From purpose and scope: and primary objective was to determine the extent and grade of ore present and the future potential of the district. The second and broader objective was to learn the relationship of ore to stratigraphy and structure, in order to outline similar areas favorable for prospecting.
- Geology of Uranium Deposits in the Inter-River Area, Grand and San Juan Counties, Utah
- Discussing a geologic reconnaisance performed to determine the uranium potential of the Inter-River area
- Hydrogeochemical Reconnaissance for Uranium in the Stanley Area, South-Central Idaho
- Introduction: The purpose of this project was to: (1) investigate the applicability of hydrogrochemical techniques to uranium exploration in the Stanley area; and (2) make a hydrogeochemical reconnaissance survey of the Basin Creek mining district and surrounding area as a step toward evaluation of the uranium potential.
- [Illustrations: Figures 1-10]
- Maps and charts illustrating aspects of a photogeologic reconnaissance study of the spatial relationship of uranium deposits to structure and stratigraphy in Duval County, Texas.
- Investigation of Subsurface Isorad Methods, Temple Mountain, San Rafael District, Utah
- From abstract: The subsurface isorad method is an attempt to locate areas favorable for uranium ores by the use of contour maps which show localities having greater radioactivity. The construction of isorad maps entails the measurement of the area under the curve of a gamma-ray logo The figures obtained indicate relative amounts of gamma radiation and are used to locate the isorad contours. This work was started at Temple Mountain in the San Rafael Swell area during the spring of 1952. The purpose of this investigation is to determine the most effective and economic hole spacing for subsurface isorad work.