Summary Geologic Report on the UE20p Exploratory Hole, Area 20, Pahute Mesa, Nevada Test Site. (open access)

Summary Geologic Report on the UE20p Exploratory Hole, Area 20, Pahute Mesa, Nevada Test Site.

None
Date: April 1969
Creator: Jenkins, E. C.
Object Type: Report
System: The UNT Digital Library
Environmental Assessment for the Proposed Withdrawal of Public Lands Within and Surrounding the Caliente Rail Corridor, Nevada (open access)

Environmental Assessment for the Proposed Withdrawal of Public Lands Within and Surrounding the Caliente Rail Corridor, Nevada

The purpose for agency action is to preclude surface entry and the location of new mining claims, subject to valid existing rights, within and surrounding the Caliente rail corridor as described in the Yucca Mountain FEIS (DOE 2002). This protective measure is needed to enhance the safe, efficient, and uninterrupted evaluation of land areas for potential rail alignments within the Caliente rail corridor. The evaluation will assist the DOE in determining, through the Rail Alignment environmental impact statement (EIS) process, whether to construct a branch rail line, and to provide support to the BLM in deciding whether or not to reserve a ROW for the rail line under the Federal Land Policy and Management Act (FLPMA). The BLM participated as a cooperating agency in preparing this EA because it is the responsible land manager and BLM staff could contribute resource specific expertise.
Date: December 1, 2005
Creator: United States. Department of Energy.
Object Type: Report
System: The UNT Digital Library
Nevada: basic data for thermal springs and wells as recorded in geotherm. Part B (open access)

Nevada: basic data for thermal springs and wells as recorded in geotherm. Part B

This GEOTHERM sample file contains 1367 records for Nevada. The records contain data on location, sample description, analysis type, collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotope data are occassionally available. (ACR)
Date: July 1, 1983
Creator: Bliss, J. D.
Object Type: Report
System: The UNT Digital Library
Nevada: basic data for thermal springs and wells as recorded in GEOTHERM. Part A (open access)

Nevada: basic data for thermal springs and wells as recorded in GEOTHERM. Part A

All chemical data for geothermal fluids in Nevada available as of December 1981 are maintained on GEOTHERM, a computerized information system. This report presents summaries and sources of records for Nevada. 7 refs. (ACR)
Date: June 1, 1983
Creator: Bliss, J. D.
Object Type: Report
System: The UNT Digital Library
Duration of Hydrothermal Activity at Steamboat Springs, Nevada, From Ages of Spatially Associated Volcanic Rocks (open access)

Duration of Hydrothermal Activity at Steamboat Springs, Nevada, From Ages of Spatially Associated Volcanic Rocks

Abstract: Steamboat Springs is a presently active equivalent of epithermal gold-silver ore-forming systems. Hot-spring sinter deposits contain small amounts of gold, silver, mercury, antimony, and arsenic. Hot-spring activity probably started before extrusion of the basaltic andesite of Steamboat Springs. Old sinter from the Steamboat Springs system occurs in gravels above and below the basaltic andesite. Intense hydrothermal alteration, including almost complete replacement by hydrothermal potassium-feldspar, has affected the basaltic andesite. Three plagioclase separates of differing potassium content from fresh basaltic andesite yielded potassium-argon ages of 2.52 to 2.55 m.y. Basaltic andesite almost completely replaced by potassium-feldspar yielded an age of 1.1 m.y. The source of energy for the thermal convection system is probably a large rhyolitic magma chamber that supplied the pumice and from which the rhyolite domes were emplaced. Sanidine and obsidian from four of the rhyolite domes yielded potassium-argon ages of 1.15 to 1.52 m.y. and obsidian from one of the northeastern domes yielded apparent ages of 2.97 and 3.03 m.y. The data indicate that hydrothermal activity has occurred at Steamboat Springs, possibly intermittently, for more than 2-1/2 m.y. These data agree with other radiogenic age studies indicating 1- and 2-m.y. lifetimes for the hydrothermal systems that generate …
Date: 1979
Creator: Silberman, M. L.; White, D. E.; Keith, T. E. C. & Dockter, R. D.
Object Type: Report
System: The UNT Digital Library
Telluric Traverse Location Map and Profiles for Double Hot Springs Known Resource Area, Nevada (open access)

Telluric Traverse Location Map and Profiles for Double Hot Springs Known Resource Area, Nevada

None
Date: August 3, 1978
Creator: Senterfit, R. M.; Hoover, D. B. & Christopherson, K.
Object Type: Book
System: The UNT Digital Library
Audio-Magnetotelluric Station Location Map and Data Log for Double Hot Springs Known Geothermal Resources Area (open access)

Audio-Magnetotelluric Station Location Map and Data Log for Double Hot Springs Known Geothermal Resources Area

Data on the observed apparent resistivity in ohm-meters, standard error in ohm-meters, and number of observations are tabulated. (JGB)
Date: unknown
Creator: Senterfit, R. M. & Hoover, D. B.
Object Type: Book
System: The UNT Digital Library
Principal Facts for a Gravity Survey of Baltazor Known Geothermal Resource Area, Nevada (open access)

Principal Facts for a Gravity Survey of Baltazor Known Geothermal Resource Area, Nevada

The data presented are referenced to a gravity base station in Denio, Nevada at the Post Office, 50 meters south of the Oregon-Nevada State line, 1.6 meters south of the door in the southeast corner of the concrete porch, near the mailbox. Site is monumented with a ''USAF Gravity Station'' disc (A.C.I.C. reference number 2352-1). Base value is 979945.94.
Date: January 1, 1977
Creator: Peterson, D. L. & Hoover, D. B.
Object Type: Book
System: The UNT Digital Library
Telluric Traverse Location Map and Profiles for Fly Ranch, Northeast Known Geothermal Resource Area, Nevada (open access)

Telluric Traverse Location Map and Profiles for Fly Ranch, Northeast Known Geothermal Resource Area, Nevada

None
Date: January 1, 1977
Creator: Christopherson, K. R.; Hoover, D. B. & Senterfit, M. R.
Object Type: Book
System: The UNT Digital Library
1993 Site Environmental Report Tonopah Test Range, Tonopah, Nevada (open access)

1993 Site Environmental Report Tonopah Test Range, Tonopah, Nevada

This report summarizes the environmental surveillance activities conducted by Sandia National Laboratories, the US Environmental Protection Agency, and Reynolds Electrical and Engineering Company for the Tonopah Test Range operated by Sandia National Laboratories. Sandia National Laboratories` responsibility for environmental monitoring results extend to those activities performed by Sandia National Laboratories or under its direction. Results from other environmental monitoring activities are included to provide a measure of completeness in reporting. Other environmental compliance programs such as the National Environmental Policy Act of 1969, environmental permits, and environmental restoration and waste management programs are also included in this report, prepared for the US Department of Energy in compliance with DOE Order 5400.1.
Date: November 1994
Creator: Culp, T.; Howard, D. & McClellan, Y.
Object Type: Report
System: The UNT Digital Library
2004 Annual Summary Report for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site, Nye County, Nevada (open access)

2004 Annual Summary Report for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site, Nye County, Nevada

The Maintenance Plan for the Performance Assessments and Composite Analyses for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site (Bechtel Nevada, 2000) requires an annual review to assess the adequacy of the performance assessments (PAs) and composite analyses (CAs) for each of the facilities, and reports the results in an annual summary report to the U.S. Department of Energy Headquarters. The Disposal Authorization Statements for the Area 3 and Area 5 Radioactive Waste Management Sites (RWMSs) also require that such reviews be made and that secondary or minor unresolved issues be tracked and addressed as part of the maintenance plan (U.S. Department of Energy [DOE]). The U.S. Department of Energy National Nuclear Security Administration Nevada Site Office performed annual reviews in fiscal year (FY) 2004 by evaluating operational factors and research results that impact the continuing validity of the PA and CA results. This annual summary report presents data and conclusions from the FY 2004 review, and determines the adequacy of the PAs and CAs. Operational factors, such as the waste form and containers, facility design, waste receipts, closure plans, as well as monitoring results and research and development (R&D) activities were reviewed …
Date: January 1, 2005
Creator: Yucel, Vefa
Object Type: Report
System: The UNT Digital Library
Hydraulic Testing of Wells in Central Nevada. Central Nevada-20. (open access)

Hydraulic Testing of Wells in Central Nevada. Central Nevada-20.

None
Date: June 1970
Creator: Dinwiddie, G. A.
Object Type: Report
System: The UNT Digital Library
Environmental Assessment Overview Yucca Mountain Site, Nevada Research and Development Area, Nevada (open access)

Environmental Assessment Overview Yucca Mountain Site, Nevada Research and Development Area, Nevada

In February 1983, the U.S. Department of Energy (DOE) identified the Yucca Mountain site in Nevada as one of nine potentially acceptable sites for a mined geologic repository for spent nuclear fuel and high-level radioactive waste. The site is in the Great Basin, which is one of five distinct geohydrologic settings considered for the first repository. To determine their suitability, the Yucca Mountain site and the eight other potentially acceptable sites have been evaluated in accordance with the DOE's General Guidelines for the Recommendation of Sites for the Nuclear Waste Repositories. These evaluations were reported in draft environmental assessments (EAs), which were issued for public review and comment. After considering the comments received on the draft EAs, the DOE prepared the final EAs. On the basis of the evaluations reported in this EA, the DOE has found that the Yucca Mountain site is not disqualified under the guidelines. The DOE has also found that it is suitable for site characterization because the evidence does not support a conclusion that the site will not be able to meet each of the qualifying conditions specified in the guidelines. On the basis of these findings, the DOE is nominating the Yucca Mountain site …
Date: May 1, 1986
Creator: United States. Department of Energy.
Object Type: Report
System: The UNT Digital Library
Characterize Framework for Seismicity and Structural Deformation at Yucca Mountain, Nevada (open access)

Characterize Framework for Seismicity and Structural Deformation at Yucca Mountain, Nevada

None
Date: February 23, 2004
Creator: King, J.
Object Type: Report
System: The UNT Digital Library
Evidence for an unsaturated-zone origin of secondary minerals in Yucca Mountain, Nevada (open access)

Evidence for an unsaturated-zone origin of secondary minerals in Yucca Mountain, Nevada

The unsaturated zone (UZ) in Miocene-age welded tuffs at Yucca Mountain, Nevada, is under consideration as a potential site for the construction of a high-level radioactive waste repository. Secondary calcite and silica minerals deposited on fractures and in cavities in the UZ tuffs are texturally, isotopically, and geochemically consistent with UZ deposition from meteoric water infiltrating at the surface and percolating through the UZ along fractures. Nonetheless, two-phase fluid inclusions with small and consistent vapor to liquid (V:L) ratios that yield consistent temperatures within samples and which range from about 35 to about 80 C between samples have led some to attribute these deposits to formation from upwelling hydrothermal waters. Geochronologic studies have shown that calcite and silica minerals began forming at least 10 Ma and continued to form into the Holocene. If their deposition were really from upwelling water flooding the UZ, it would draw into question the suitability of the site as a waste repository.
Date: April 29, 2001
Creator: Whelan, Joseph F.; Roedder, Edwin & Paces, James B.
Object Type: Article
System: The UNT Digital Library
Anisotropy of mechanical properties of tuff at Yucca Mountain (open access)

Anisotropy of mechanical properties of tuff at Yucca Mountain

The purpose of this study is to investigate anisotropy of mechanical properties, namely, compressive strength and modulus, for Tiva Canyon welded tuff from the starter tunnel at Yucca Mountain. Mechanical properties of Tiva Canyon Tuff are needed for the design of the ramps and drifts within the Tiva Canyon horizon. Approximately one cubic foot block samples, all of which were from the thermo -- mechanical unit TCw, were obtained from a muck pile containing excavated rock from the starter tunnel. Specimens were cored from the block samples in two distinct orientations: parallel and perpendicular to the lithophysal cavity orientation. Since lithophysal cavity orientation is predominantly horizontal in the field, parallel specimens can be considered horizontal and perpendicular specimens vertical with respect to the rock mass. The specimens were NX sized (5.4 cm diameter) and had a length-to-diameter ratio of 2:1. The air dried specimens were tested at room temperature in a triaxial chamber at confining pressures of 0.1, 5, and 10 MPa, and at a compressive axial strain rate of 10{sup {minus}5} s{sup {minus}}. The Young`s Modulus values were calculated by a least squares fit of stress - strain data between 10 and 50% of the ultimate strength.
Date: June 1, 1995
Creator: Karakouzian, M. & Hudyma, N.
Object Type: Article
System: The UNT Digital Library
Quarterly progress report on the DOE Waste Package project at the University of Nevada, Las Vegas, July 1, 1993 through September 30, 1993 (open access)

Quarterly progress report on the DOE Waste Package project at the University of Nevada, Las Vegas, July 1, 1993 through September 30, 1993

Progress reports are presented for the following tasks: overview and progress of waste package project and container design; waste container design considerations (criticality analysis, experimental drift model); waste container alternate design considerations; thermal simulation of high level nuclear waste canister emplacement; structural analysis and design of nuclear waste package canister; robotic manipulation of the nuclear waste container; investigation of stress in a circular tunnel due to overburden & thermal loading of horizontally placed 21PWR multi-purpose canisters; investigation of faulted tunnel models by combined photoelasticity and finite element analysis; and transport phenomena in the near field.
Date: November 1, 1993
Creator: Ladkany, S.G.
Object Type: Report
System: The UNT Digital Library
Seismicity of the Southern Nevada Region, December 22, 1971 to July 1, 1972. (open access)

Seismicity of the Southern Nevada Region, December 22, 1971 to July 1, 1972.

None
Date: July 1972
Creator: Bayer, Kenneth C.
Object Type: Report
System: The UNT Digital Library
Preliminary Seismicity Study of the Southern Nevada Region for the Month of October 1972. (open access)

Preliminary Seismicity Study of the Southern Nevada Region for the Month of October 1972.

None
Date: December 1972
Creator: Bayer, Kenneth C.
Object Type: Report
System: The UNT Digital Library
Earthquakes Recorded by a Seismograph Network Located in the Southern Nevada Region January 1 to December 22, 1971 (open access)

Earthquakes Recorded by a Seismograph Network Located in the Southern Nevada Region January 1 to December 22, 1971

None
Date: May 1972
Creator: Bayer, Kenneth C. & King, Kenneth W.
Object Type: Report
System: The UNT Digital Library
Radionuclide Concentrations and Botanical Composition of the Diet of Cattle Grazing the Area 18 Range of the Nevada Test Site, 1966--1970. (open access)

Radionuclide Concentrations and Botanical Composition of the Diet of Cattle Grazing the Area 18 Range of the Nevada Test Site, 1966--1970.

None
Date: January 1, 1972
Creator: Smith, D. D.; Brown, K. W.; Brechbill, R. A.; Giles, K. R. & Lesperance, A. L.
Object Type: Report
System: The UNT Digital Library
Summary of Hydraulic Testing in and Chemical Analyses of Water Samples From Deep Exploratory Holes in Little Fish Lake, Monitor, Hot Creek, and Little Smoky Valleys, Nevada. (open access)

Summary of Hydraulic Testing in and Chemical Analyses of Water Samples From Deep Exploratory Holes in Little Fish Lake, Monitor, Hot Creek, and Little Smoky Valleys, Nevada.

None
Date: 1971
Creator: Dinwiddie, George A. & Schroder, LeRoy J.
Object Type: Report
System: The UNT Digital Library
Audio-Magnetotelluric Data Log and Station Location Map for Gerlach Northwest Known Geothermal Resource Area, Nevada (open access)

Audio-Magnetotelluric Data Log and Station Location Map for Gerlach Northwest Known Geothermal Resource Area, Nevada

Observed apparent resistivity data in ohm-meters, standard error data in ohm-meters, and number of observations are tabulated. (JGB)
Date: January 1, 1977
Creator: Long, C. L. & Senterfit, M.
Object Type: Book
System: The UNT Digital Library
Gravity Survey of the ue15j Site, Area 15, Nye County, Nevada. (open access)

Gravity Survey of the ue15j Site, Area 15, Nye County, Nevada.

None
Date: 1970
Creator: Healey, D. L.
Object Type: Report
System: The UNT Digital Library