Technical Report Archive & Image Library (TRAIL) - 81 Matching Results
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- Average size of uranium ore targets on the Colorado Plateau
- A report discussing the determination of the size or areal extent of orebodies disclosed by drilling and by exploration underground.
- Bull Canyon District, Dolores Plateau area, Colorado
- Illustrations regarding the Bull Canyon District Delores Plateau Area, Colorado.
- Carnotite resources of Outlaw Mesa, Mesa County, Colorado
- A report regarding carnotite resources of Outlaw Mesa, Mesa County, Colorado.
- Condition Survey of Wells and Springs in the Rio Blanco Project Area, Rio Blanco County, N.W. Colorado
- A report regarding a survey of the condition of wells and springs in the Rio Blanco County, in N.W. Colorado.
- Detailed Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Tallahassee Creek, Badger Creek, Castle Rock Gulch, and Buffalo Gulch Areas in the Northwestern Part of the Pueblo NTMS Quadrangle, Colorado
- Report describing chemical analysis of 62 water and 620 sediment samples during a follow-up geochemical survey to search for uranium in the Pueblo quadrangle.
- The Distribution of Uranium-Vanadium Deposits in the Colorado Plateau Relative to Tertiary Intrusive Masses
- Introduction: Studies of uranium-vanadium occurrences in the Four Corners region show that, with the exception of the Lukachuai area, all of the major deposits in the Morrison formation are grouped around the various igneous masses which are scattered irregularly throughout the Colorado Plateau. The pattern of deposition varies from mountain group to mountain group and each will be described separately. Maps accompany this report to supplement the descriptions of ore occurrences in the vicinity of the La Sal, Abajo, Carrizo, and Henry mountains. Elsewhere, it is believed that a written description will suffice.
- Drilling on Tenderfoot Mesa, Mesa County, Colorado (Revised from RMO-821, for open file)
- A report regarding a drilling project at Tenderfoot Mesa, Mesa County, Colorado.
- 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.
- Evaluation of Possible Radioactivity Transport in Groundwater
- "The possibility of radioactivity transport in the groundwater system as the result of a hypothetical maximum credible gas leak was evaluated." "The present study confirms the low radiation levels in the groundwater predicted in the initial calculations." (from Summary)
- 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.
- 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.
- [Figures 1-7: Trace Elements Program Maps]
- Maps of Trace Elements Programs field projects, including locations of drill holes for the Colorado Plateau project and location of eastern oil shale in Tennessee.
- 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.
- 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.
- Geology and Ore Resources of the Uranium-Vanadium Depositional Province of the Colorado Plateau Region
- From introduction and acknowledgements: This report is written to supplement and complete the record contained in some fifty district and special reports already submitted, and duplication of material in district reports has been studiously avoided. The data herein contained are largely of a regional type, inclusion of which was not wholly appropriate to the district reports.
- Geology and Uranium Evaluation of the Precambrian Quartz-Pebble Conglomerates of the Needle Mountains, Southwest Colorado: Final Report
- From purpose of study: The Vallecito Conglomerate of the Needle Mountains area in southwestern Colorado was studied to evaluate the uranium potential of the unit and to test the applicability of the uraniferous Precambrian pebble-conglomerate exploration model in this area. The main thrust of this project is the Vallecito Conglomerate, but the Uncompahgre Formation, which is also in the Needle Mountains area has basal conglomerate that was investigated in a reconnaissance mode. Five specific objectives have been formulated to meet the overall purpose of this project, and these include: a) Determine the uranium distribution in the Vallecito Conglomerate and the basal conglomerate of the Uncompahgre Formation. b) Evaluate the uranium resources of the area to the degree possible utilizing available information and personal field investigations. c) Test the validity of application of the Precambrian quartz-pebble conglomerate model to this area. d) Recommend detailed studies and delineate drilling sites in the area to further evaluate the uranium resources if warranted. e) Recommend additional geologic, geophysical and geochemical studies which would bear directly on evaluation of uranium resources of the Precambrian pebble conglomerates in the Needle Mountains area.
- 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
- Investigations and ore reserve estimation of Barlow Creek roscoelite deposits with ore reserve data from Graysill and Lightner Creek areas, Colorado
- Discussing the investigation and ore reserve estimation of the Barlow Creek Roscoelite deposits with ore reserve data Grayskull and Lightner Creek areas, Colorado.
- Location of uranium occurrences in southcentral Wyoming and northwestern Colorado
- "The principal uranium deposits in southcentral Wyoming and north-western Colorado are located in or at the margins of broad Tertiary basins. Interesting and possibly commercially significant occurrences are found in other Tertiary and older rocks at widely separated locations within this region. The six maps accompanying this report give the location, name, and ownership of the mines and occurrences from which samples assaying greater than 0.10% U3O8 have been collected. Claim names, location, and ownership are also given for occurrences outside the map areas."
- McElmo drilling project, Montezuma County, Colorado
- A detailed study of the McElmo district undertaken by the Atomic Energy Commission
- Memorandum Listing the Areas in Colorado, Utah, Arizona and New Mexico that are Geologically Favorable for Developing Large Reserves of Vanadium Ore by Prospecting
- Introduction: Vanadium ore is being mined at many places in western Colorado, southeastern Utah, northeastern Arizona, and northwestern New Mexico (fig. 1). Eight mills in this region produced about 4,300,000 pounds of V2 05 in 1942, representing about 90 percent of the vanadium obtained from domestic sources. Although ore production has mostly exceeded mill capacity since 1937, production during the last half of 1942 averaged only about 19,000 tons or ore a month, whereas the capacity of these mills total about 22,000 tons a month. At the expected rate of ore production, ore stockpiles will be exhausted sometime in 1944, and these mills will then have excess capacity. With more intensive prospecting than now practiced, however, it is believed that sufficient reserves can be indicated to sustain capacity operation of these mills for several years. This memorandum is prepared to specify those areas that are considered most favorable from a geologic standpoint for developing large reserves of vanadium ore by prospecting. It is based on intensive studies by the Geological Survey since 1939 in most of the areas that produce vanadium ore.
- Memorandum regarding vanadium ore production in the Colorado and Utah vanadium producing region
- Memorandum discussing the production of Vanadium Ore in the Colorado and Utah Vanadium producing Region.
- Multivariate Statistical Analysis of Stream Sediments for Mineral Resources from the Craig NTMS Quadrangle, Colorado
- Abstract: Multivariate statistical analyses were carried out on Hydrogeochemical and Stream Sediment Reconnaissance data from the Craig quadrangle, Colorado, to support the National Uranium Resource Evaluation and to evaluate strategic or other important commercial mineral resources. A few areas for favorable uranium mineralization are suggested for parts of the Wyoming Basin, Park Range, and Gore Range. Six potential source rocks for uranium are postulated based on factor score mapping. Vanadium in stream sediments is suggested as a pathfinder for carnotite-type mineralization. A probable northwest trend of lead-zinc-copper mineralization associated with Tertiary intrusions is suggested. A few locations are mapped where copper is associated with cobalt. Concentrations of placer sands containing rare earth elements, probably of commercial value, are indicated for parts of the Sand Wash Basin.
- NURE Hydrogeochemical Stream Sediment Data Release for Pilot Study Samples From Portions of the Sterling and Greeley NTMS Quadrangles, Colorado
- From summary: This data release presents analytical results obtained for a pilot study being done in portions of the Sterling and Greeley, Colorado, National Topographic Map Series (NTMS) quadrangles (Fig. 1) by the University of Colorado under contract to the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).
- Petrographical Investigations of the Salt Wash Sediments, Annual Technical Report: 1954
- Abstract: This report consists of four parts, the first three being descriptions of investigations compiled in the period October 1st, 1953 to April 1st, 1954; the fourth part is a summary of progress of the research based on our entire investigations completed prior to April 1st, 1954. The first part comprises a set of preliminary experiments investigating the mineral composition of the sandstones in thin sections, in an attempt to differentiate barren from ore-bearing sandstones. It appears that there are more rock-fragments and particularly more volcanic rock fragments in the ore zone (zone 4, Well C, Bull Canyon). In addition, silica cement appears to be associated with ore and carbonate cement with barren sediments. The second part details the investigation of the mudstones of the Bull Canyon Wells . A mixed layer lattice "illite" and a kaolin mineral are the most prominent in "normal" mudstones. Dye tests suggest there are differences between the clay minerals in the sandstone matrix of the ore zone and barren zone. In addition, the mudstone zones appear to differ in the response to the dye tests. The third part of the report details the bulk density determinations for cores from well B. The results confirm our conclusions based on bulk density investigations of cores from well C. Finally in the summary of progress of the research, Part IV of the report, guides to ore are suggested and the differences between ore bearing sediments and barren sediments are summarized. The hypothesis of genesis which best fits the observations is also described.
- Preliminary Evaluation of the Uranium Favorability in the Area Northeast of Gunnison, Colorado
- Rock and stream-sediment samples were collected to define areas favorable for uranium deposits northeast of Gunnison, Colorado. Areas considered most favorable for further exploration are: (1) the Bronco Mountain area, approximately 10 mi south of Taylor Park Reservoir, (2) the area near the Big Red mine, and (3) the area 5 mi north-northeast of Taylor Park Reservoir. On the basis of known deposits in the Marshall Pass and Cochetopa districts, fault contacts between Precambrian granites and Paleozoic or Mesozoic sedimentary rocks are favorable structural sites.
- Preliminary report on Bureau of Mines Yellow Creek corehole no. 1, Rio Blanco County, Colorado
- Analysis of geologic, hydrologic, and geophysical data obtained in and around Yellow Creek core hole No. 1, Rio Blanco County, Colorado, indicate a 1,615-foot section of oil shale was penetrated by the hole. Geophysical log data indicate the presence of 25 gallons per ton shale for a thickness of 500 feet may be marginal. The richest section of oil shale is indicated to be centered around a depth of 2,260 feet. Within the oil shale the interval 1,182 to 1,737 feet is indicated to be relatively structurally incompetent and probably permeable. Extension of available regional hydrologic data indicate the oil shale section is probably water bearing and may yield as much as 1,000 gallons per minute. Hydrologic testing in the hole is recommended.
- Preliminary report on geologic reconnaissance in Ralston Creek-Golden Gate Canyon areas, Jefferson County, Colorado
- Determining the major structural features of the area, and the relation between the uranium mineralization along Golden Gate canyon and that of Ralston Creek.
- Preliminary Report on the Geology of Uranium Deposits in the Browns Park Formation in Moffat County, Colorado, and Carbon County, Wyoming
- The following report studies uranium ore deposits discovered in the Browns Park Formation, south-central Wyoming and northwest Colorado.
- Preliminary Study on Uranium Favorability of the Brushy Basin Member of the Morrison Formation, Southeastern Utah and Southwestern Colorado
- This report is a preliminary evaluation of the uranium resources of the Brushy Basin Member of the Morrison Formation of Late Jurassic age in southwestern Colorado and southeastern Utah. The project, which began July 1, 1976, and was completed October 1, 1976, was carried out by the Bendix Field Engineering Corporation (BFEC) for the Grand Junction Office of the U.S. Energy Research and Development Administration (ERDA).
- Preliminary Study on Uranium Favorability of the Brushy Basin Member of the Morrison Formation, Southeastern Utah and Southwestern Colorado: Plate 1
- Supplementary data containing locations of uranium deposits in the Brushy Basin project area, Utah and Colorado.
- Radioactive Mineral Occurrences of Colorado and Bibliography
- From abstract: This two-part report provides an essentially complete listing of radioactive occurrences in Colorado, with a comprehensive bibliography and bibliographic cross-indexes.
- Radioactive Titaniferous Heavy Mineral Placers in the San Juan Basin, New Mexico and Colorado
- Discussing radioactive titaniferous heavy mineral placers in the San Juan Basin in New Mexico and Colorado.
- [Radioactive Titaniferous Heavy Mineral Placers in the San Juan Basin, New Mexico and Colorado: Slides]
- The following slides document black sand deposits that were analyzed in the parent report, Radioactive Titaniferous Heavy Mineral Placers in the San Juan Basin, New Mexico and Colorado.
- Raw Data Report of Elemental Analyses from Hydrogeochemical and Stream Sediment Samples Taken Near Sterling and Fort Morgan, Northeastern Colorado, December 1976 and January 1977
- From summary: The University of Colorado, under contract with the Los Alamos Scientific Laboratory (LASL), is currently performing an evaluation of geochemical relationships of water and sediments and seasonal variations to uranium for the South Platte drainage of northeastern Colorado. As a preliminary part of this study, samples were collected from 125 sites near Sterling and Fort Morgan, Colorado, during the period from December 20, 1976, to January 15, 1977. During this period the weather in the area was clear to partly cloudy, with daytime temperatures ranging from -12 to 12 C. Only a trace of precipitation, in the form of very light snow flurries, occurred during the sampling period. The sample site locations and numbers (the first two digits have been omitted) are shown on Plate I.
- Recommendations for Drilling Parts of the Coal Creek Anticline, Rio Blanco County, Colorado
- Discussing recommendations for drilling parts of the Coal Creek Anticline in Rio Blanco County, Colorado
- Reconnaissance Examinations of Copper Uranium Deposits West of the Colorado River
- Several relatively small copper-uranium deposits have been found in southwestern Utah along the contact of the Shinarump and Moenkopi formations of Triassic age, at least from the San Rafael Swell area of Emery County, southward through central and eastern Garfield County, southwestward into western Kane County, and westward into the southern part of Washington County.
- Reconnaissance for uranium in parts of the San Juan Basin, New Mexico and Colorado
- Discussing a reconnaissance carried out for uranium in parts of the San Juan Basin in New Mexico and Colorado
- Reconnaissance for Uranium in the Uinta Basin of Colorado and Utah
- Abstract: Weak uranium mineralization is widespread throughout the Uinta Basin of northeastern Utah and northwestern Colorado, in rocks ranging in age from Permian to Eocene. No commercial ore bodies are known, although formations there have characteristics elsewhere considered favorable for ore deposition.
- Reconnaissance of the Greagor group, Bull Canyon district, Montrose County, Colorado
- A report discussing 28 claims contained in the Greagor group, owned by the J.R. Simplot Company.
- Reconnaissance of uranium-bearing deposits, Yampa River region, Colorado
- Discussing a reconnaissance of uranium-bearing deposits in the Yampa River Region, in Colorado
- Report on Lightner Creek District, San Juan Basin Area, Colorado
- A report regarding the Lightner Creek District in the San Juan Basin Area, Colorado.
- Report on Reserves and Production Situation of Vanadiferous and Related Ores in Colorado Plateau Region
- From introduction: The general distribution of known deposits of vanadium-bearing sandstone, which also contain some uranium and radium, is shown in figure 1 1/ and Exhibit A, plate 53. 2/ During 1939-41 the Geological Survey made detailed geological studies of these deposits in the Uravan district, Montrose County, Colorado, as well as preliminary examinations in other parts of the Colorado Plateau vanadium region. In 1942 detailed geological studies were made o the deposits in the Egnar-Slick Rock district, San Miguel Co., Colo.; 3/ the Carrizo Moungains district, Navajo Indian Reservation, Arizona and New Mexico; 4/ the Placerville district, San Miguel County, Colo. 5/ and the Monticello district, San Juan Co., Utah. 6/ Since May 3, 1943, the Gelogical Survey has guided the Bureau of Mines program of prospecting these deposits in parts of Colorado and Utah.
- Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado
- A report on the survey of ore deposits in the Carpenter Ridge District, Dolores Plateau Area, Colorado.
- Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado: [Figures and Calculations]
- Index maps, detail figures, columnar sections, and calculation tables for the Carpenter Ridge District.
- Report on the Coyote area district, Dolores Plateau area, Colorado
- Report and corollary maps on the Coyote Mesa District, Dolores Plateau Area, Colorado
- Report on the Dolores River District, Dolores Plateau Area, Colorado: [Calculations]
- Tables from the Dolores River District