Resource Type

Mineral and water resources of Nevada (open access)

Mineral and water resources of Nevada

The mineral and water resources of Nevada are summarily described in this report. Following a general description of the mineral industry and of the geology of the State as a whole, the occurrence, distribution, and relative importance of individual commodities are discussed in some detail. All mineral commodities are described that are known to occur in Nevada and that might have economic significance in the foreseeable future, whether or not they have been mined. In the description of the geology of the State, a section on economic geology describes the distribution of the metallic and nonmetallic mineral deposits both areally and with respect to the general geologic features. A knowledge of the pattern of distribution of known mineral deposits of various types is essential to the successful search for new ore bodies. A section on mineral exploration discusses the methods and problems of exploration, and also considers which commodities in Nevada offer the greatest promise of new discoveries in the future. Water resources are described rather fully in this report; water in this generally arid part of the Great Basin is vital to the economy of the State and to the well-being of its people. Sources of waterpower and geothermal …
Date: January 1, 1974
Creator: unknown
System: The UNT Digital Library
Drilling for geothermal resources: rules and regulations and minimum well construction standards (open access)

Drilling for geothermal resources: rules and regulations and minimum well construction standards

The following geothermal rules and regulations are presented: authority; policy; definitions; drilling; records; blow out prevention; injection wells; abandonment; maintenance; hearings; notice procedures; hearings on refused, limited, or conditioned permit; appeals; penalties; and forms;
Date: June 1, 1978
Creator: unknown
System: The UNT Digital Library
Geothermal well log interpretation. Progress report (open access)

Geothermal well log interpretation. Progress report

Progress is presented on the following tasks: review of the state-of-the-art, classification of geothermal reservoir types, data acquisition, problem definition and directions for solution, and refinement of existing interpretation techniques and development of new ones. Computerized literature searches were conducted. The classification system defines five major characteristics which will qualify a potential reservoir. A catalog lists well logs currently available for study. Rock and fluid parameters needed for reservoir studies are listed. A list of matrix characteristics for rocks and minerals is given. (MHR)
Date: January 1, 1978
Creator: unknown
System: The UNT Digital Library
Heating the New Mexico Tech Campus with geothermal energy. Final report, July 1, 1978-October 31, 1979 (open access)

Heating the New Mexico Tech Campus with geothermal energy. Final report, July 1, 1978-October 31, 1979

An area between the base of Socorro Peak and the New Mexico Tech Campus (located in central New Mexico) has been proposed as a site for geothermal exploratory drilling. The existing site environment is summarized, a program for site monitoring is proposed, impacts of geothermal production and reinjection are listed, and problems associated with geothermal development are examined. The most critical environmental impact is the increased seismic activity that may be associated with geothermal fluid migration resulting from geothermal production and reinjection.
Date: January 1, 1980
Creator: LeFebre, V. & Miller, A.
System: The UNT Digital Library
Drilling for energy resources (open access)

Drilling for energy resources

Drilling is integral to the exploration, development, and production of most energy resources. Oil and natural gas, which are dependent on drilling technology, together account for about 77% of the energy sources consumed in the US. Thus, the limitations of current drilling technology also restrict the rate at which new energy supplies can be found, extracted, and brought to the marketplace. The purpose of the study reported was to examine current drilling technology, suggest areas where additional research and development (R and D) might significantly increase drilling rates and capabilities, and suggest a strategy for improving drilling technology. An overview is provided of the US drilling industry. The drilling equipment and techniques now used for finding and recovering oil, natural gas, coal, shale oil, nuclear fuels, and geothermal energy are described. Although by no means exhaustive, these descriptions provide the background necessary to adequately understand the problems inherent in attempts to increase instantaneous and overall drilling rates.
Date: January 1, 1976
Creator: unknown
System: The UNT Digital Library
Preliminary findings of an investigation of the Dunes Thermal Anomaly, Imperial Valley, California (open access)

Preliminary findings of an investigation of the Dunes Thermal Anomaly, Imperial Valley, California

Separate abstracts were prepared for four papers. Two are listed by title. (MHR)
Date: January 1, 1973
Creator: Coplen, T. B.; Combs, J.; Elders, W. A.; Rex, R. W.; Burckhalter, G. & Laird, R.
System: The UNT Digital Library
Mathematical models as tools for probing long-term safety of CO2 storage (open access)

Mathematical models as tools for probing long-term safety of CO2 storage

Subsurface reservoirs being considered for storing CO{sub 2} include saline aquifers, oil and gas reservoirs, and unmineable coal seams (Baines and Worden, 2004; IPCC, 2005). By far the greatest storage capacity is in saline aquifers (Dooley et al., 2004), and our discussion will focus primarily on CO{sub 2} storage in saline formations. Most issues for safety and security of CO{sub 2} storage arise from the fact that, at typical temperature and pressure conditions encountered in terrestrial crust, CO{sub 2} is less dense than aqueous fluids. Accordingly, CO{sub 2} will experience an upward buoyancy force in most subsurface environments, and will tend to migrate upwards whenever (sub-)vertical permeable pathways are available, such as fracture zones, faults, or improperly abandoned wells (Bachu, 2008; Pruess, 2008a, b; Tsang et al., 2008). CO{sub 2} injection will increase fluid pressures in the target formation, thereby altering effective stress distributions, and potentially triggering movement along fractures and faults that could increase their permeability and reduce the effectiveness of a caprock in containing CO{sub 2} (Rutqvist et al., 2008; Chiaramonte et al., 2008). Induced seismicity as a consequence of fluid injection is also a concern (Healy et al., 1968; Raleigh et al., 1976; Majer et al., 2007). …
Date: February 1, 2009
Creator: Pruess, Karsten; Birkholzer, Jens & Zhou, Quanlin
System: The UNT Digital Library
Preliminary report on the Northern California Power Agency's Notice of Intention to seek certification for NCPA Geothermal Project No. 2 (open access)

Preliminary report on the Northern California Power Agency's Notice of Intention to seek certification for NCPA Geothermal Project No. 2

This preliminary report on the Northern California Power Agency (NCPA) geothermal power plant proposal has been prepared pursuant to California Public Resources Code Sections 25510, 25512, and 25540. It presents the preliminary Findings of fact and Conclusions adopted by the Commission Committee assigned to conduct proceedings on the Notice. In addition, the report contains a description of the proposed project, a summary of the proceedings to date, and local, state, and Federal government agency comments on the proposal. Finally, the report presents the Committee's view of those issues that require further consideration in future proceedings on the Notice. Pursuant to Public Resources Code Sections 25512 and 25540, the report presents preliminary Findings and Conclusions on: (1) conformity to the forecast of statewide and service area electric power demands; (2) the degree to which the proposed site and facility conform with applicable local, regional, state and Federal standards, ordinances, and laws; and (3) the safety and reliability of the facility.
Date: January 1, 1978
Creator: unknown
System: The UNT Digital Library
Tests on cores from the Wairakei Geothermal Project, Wairakei, New Zealand (open access)

Tests on cores from the Wairakei Geothermal Project, Wairakei, New Zealand

A series of tests on ckres taken from the Wairakei geothermal site in New Zealand are reported. The cores tests are representative of each of the four basic rock types significant to the functioning of the site. Ultrasonic velocity measurements were made for each rock type tk determine elastic moduli under simulated in situ conditions. Hydrostatic and triaxial deformation tests were performed on three samples of the aquifer rock to determine the effect of in situ stress on the elastic deformation moduli. Thermal conductivity was measured on all four rock types. Tabulation and graphical representation of the measured properties are included. All test procedures and apparatuses are described in detal. (MHR)
Date: January 1, 1975
Creator: Hendrickson, R. R.
System: The UNT Digital Library
[Photo Album of Earnest Ruben McElreath] (open access)

[Photo Album of Earnest Ruben McElreath]

Photo album compiled by Earnest Ruben McElreath. According to a handwritten note in the front of the album, it "presents pictures of friends, family, ex-sweeties, kinsman, pals, scenery, sports, football players, buddies, chums, and himself." Each page contains pictures as well as handwritten notes. Earnest Ruben McElreath was born Dec. 15, 1905 in Munday, Knox County, Texas and died Sept. 15, 1988 in Bexar County, Texas. He served as a major in the U. S. Army during World War II and is buried in Fort Sam Houston National Cemetery. Some pictures were taken before Sept. 1, 1925. Book started Jan. 1, 1926-completed Oct. 14, 1926. Page 2: Mary and her dog Doodles, and a photo of Earnest Ruben McElreath. Page 3: Photos of Clorine Mc-, Mary, Connie of Dallas. Page 4: Photos of Mary H. & Mary, Beckie & Mary. Page 5: Photos of Dovie and Mary. Page 6: Photos of Constance, Mary, and Beckie. Page 7: Photos of Dovie & Stewart, Mary, Perry Lee. Page 8: Photos of Hazel “Bob” Fields, Mary, Myrtice Jones. Page 9: Photos of Rebbeca “Beckie” Harlan. Page 10: Photos of Dovie and Mary. Page 11: Photos of Earnest Ruben McElreath on the beach at …
Date: [1926-01-01..1926-10-14]
Creator: McElreath, Earnest Ruben
System: The Portal to Texas History
Bureau of Economic Geology. 1978 annual report (open access)

Bureau of Economic Geology. 1978 annual report

Bureau research programs and projects are designed to address many of the State's major concerns in the areas of geologic, energy, mineral, land, and environmental resouces. Research programs incorporate geologic concepts that will build toward an understanding of a specific resource and its impact on human activities. In addition to resource assessments in uranium, lignite, and geopressured geothermal energy, the Bureau continued research into analysis of governmental policy related to energy. Systemic geologic mapping, coastal studies, basin analysis projects, and investigations in other areas of economic geology further indicate the range of research programs carried forward in 1978. Specifically, research on mineral resources and land resources, coastal studies, hydrogeology, basin studies, geologic mapping, and other research (tektites and meteorites, carboniferous of Texas, depositional environments of the Marble Falls Formation, Central Texas) are reported. The establishment of the Mining and Mineral Resources Research Institute is followed. Contracts and grant support and contract reports are listed. The publications eminating from the Bureau are listed. Services rendered by the Bureau and personnel information are included. (MCW)
Date: January 1, 1978
Creator: unknown
System: The UNT Digital Library
Geology and geothermal potential of Susanville, Lassen County, California (open access)

Geology and geothermal potential of Susanville, Lassen County, California

Detailed geologic mapping is described in, and immediately surrounding, the City of Susanville in order to determine the pattern of complex faulting controlling the subsurface hydrologic character of the area, and to explore for hot springs or areas of hydrothermal mineral alteration, which might suggest additional geothermal systems. (MHR)
Date: January 1, 1979
Creator: Rudser, R. J.
System: The UNT Digital Library
Model Components of the Certification Framework for Geologic Carbon Sequestration Risk Assessment (open access)

Model Components of the Certification Framework for Geologic Carbon Sequestration Risk Assessment

We have developed a framework for assessing the leakage risk of geologic carbon sequestration sites. This framework, known as the Certification Framework (CF), emphasizes wells and faults as the primary potential leakage conduits. Vulnerable resources are grouped into compartments, and impacts due to leakage are quantified by the leakage flux or concentrations that could potentially occur in compartments under various scenarios. The CF utilizes several model components to simulate leakage scenarios. One model component is a catalog of results of reservoir simulations that can be queried to estimate plume travel distances and times, rather than requiring CF users to run new reservoir simulations for each case. Other model components developed for the CF and described here include fault characterization using fault-population statistics; fault connection probability using fuzzy rules; well-flow modeling with a drift-flux model implemented in TOUGH2; and atmospheric dense-gas dispersion using a mesoscale weather prediction code.
Date: June 1, 2009
Creator: Oldenburg, Curtis M.; Bryant, Steven L.; Nicot, Jean-Philippe; Kumar, Navanit; Zhang, Yingqi; Jordan, Preston et al.
System: The UNT Digital Library
Directions for the '80s Joint Report to the Governor and Members of the Legislature (open access)

Directions for the '80s Joint Report to the Governor and Members of the Legislature

This report contains a combination of the Council's Eleventh Annual report to the goveror and the Sixth Biennial Report to the Legislature.
Date: December 1, 1980
Creator: Advisory Council for Technical-Vocational Education in Texas
System: The Portal to Texas History
Texas Department of Criminal Justice Strategic Plan: Fiscal Years 2011-2015 (open access)

Texas Department of Criminal Justice Strategic Plan: Fiscal Years 2011-2015

Agency strategic plan for the Texas Department of Criminal Justice describing the organization's planned services, activities, and other goals during fiscal years 2011 through 2015.
Date: July 1, 2010
Creator: Texas. Department of Criminal Justice.
System: The Portal to Texas History
Texas Department of Transportation Requests for Legislative Appropriations: Fiscal Years 2012 and 2013 (open access)

Texas Department of Transportation Requests for Legislative Appropriations: Fiscal Years 2012 and 2013

Report submitted by the Texas Department of Transportation containing background information on the department, and summaries of requests for appropriations and expenditures for the fiscal years 2012 and 2013 with supporting documentation.
Date: November 1, 2010
Creator: Texas. Department of Transportation.
System: The Portal to Texas History
Geologic carbon sequestration as a global strategy to mitigate CO2 emissions: Sustainability and environmental risk (open access)

Geologic carbon sequestration as a global strategy to mitigate CO2 emissions: Sustainability and environmental risk

Fossil fuels are abundant, inexpensive to produce, and are easily converted to usable energy by combustion as demonstrated by mankind's dependence on fossil fuels for over 80% of its primary energy supply (13). This reliance on fossil fuels comes with the cost of carbon dioxide (CO{sub 2}) emissions that exceed the rate at which CO{sub 2} can be absorbed by terrestrial and oceanic systems worldwide resulting in increases in atmospheric CO{sub 2} concentration as recorded by direct measurements over more than five decades (14). Carbon dioxide is the main greenhouse gas linked to global warming and associated climate change, the impacts of which are currently being observed around the world, and projections of which include alarming consequences such as water and food shortages, sea level rise, and social disruptions associated with resource scarcity (15). The current situation of a world that derives the bulk of its energy from fossil fuel in a manner that directly causes climate change equates to an energy-climate crisis. Although governments around the world have only recently begun to consider policies to avoid the direst projections of climate change and its impacts, sustainable approaches to addressing the crisis are available. The common thread of feasible strategies …
Date: April 1, 2011
Creator: Oldenburg, C.M.
System: The UNT Digital Library
Continental drilling (open access)

Continental drilling

The Workshop on Continental Drilling was convened to prepare a report for submission to the US Geodynamics Committee with respect to the contribution that could be made by land drilling to resolve major problems of geodynamics and consider the mechanisms by which the responsibility for scientific planning, establishment of priorities, administration, and budgeting for a land-drilling program within the framework of the aims of the Geodynamics Project would best be established. A new and extensive program to study the continental crust is outlined in this report. The Workshop focused on the following topics: processes in the continental crust (mechanism of faulting and earthquakes, hydrothermal systems and active magma chambers); state and structure of the continental crust (heat flow and thermal structure of the crust; state of ambient stress in the North American plate; extent, regional structure, and evolution of crystalline continental crust); short hole investigations; present state and needs of drilling technology; drill hole experimentation and instrumentation; suggestions for organization and operation of drilling project; and suggested level of effort and funding. Four recommendations are set down. 8 figures, 5 tables. (RWR)
Date: January 1, 1975
Creator: Shoemaker, E. M.
System: The UNT Digital Library
[Abilene Board of Commissioners Minutes: 1954-1957] (open access)

[Abilene Board of Commissioners Minutes: 1954-1957]

Ledger containing minutes of the city Board of Commissioners in Abilene, Texas documenting the group's discussions and activities from October 1, 1954 to June 27, 1957. An index with names is included at the front.
Date: 1954-10-01/1957-06-27
Creator: Abilene (Tex.)
System: The Portal to Texas History
Hydrogeophysics (open access)

Hydrogeophysics

Developing a predictive understanding of subsurface flow and transport is complicated by the disparity of scales across which controlling hydrological properties and processes span. Conventional techniques for characterizing hydrogeological properties (such as pumping, slug, and flowmeter tests) typically rely on borehole access to the subsurface. Because their spatial extent is commonly limited to the vicinity near the wellbores, these methods often can not provide sufficient information to describe key controls on subsurface flow and transport. The field of hydrogeophysics has evolved in recent years to explore the potential that geophysical methods hold for improving the quantification of subsurface properties and processes relevant for hydrological investigations. This chapter is intended to familiarize hydrogeologists and water resource professionals with the state-of-the-art as well as existing challenges associated with hydrogeophysics. We provide a review of the key components of hydrogeophysical studies, which include: geophysical methods commonly used for shallow subsurface characterization; petrophysical relationships used to link the geophysical properties to hydrological properties and state variables; and estimation or inversion methods used to integrate hydrological and geophysical measurements in a consistent manner. We demonstrate the use of these different geophysical methods, petrophysical relationships, and estimation approaches through several field-scale case studies. Among other applications, …
Date: April 1, 2010
Creator: Hubbard, S. S. & Linde, N.
System: The UNT Digital Library
Impediments to geothermal development in Lake County, California (open access)

Impediments to geothermal development in Lake County, California

The areas of environmental and socio-political concern are addressed as viewed by the actors in the geothermal process in Lake County, where the actors are the governmental jurisdictions involved in the permitting process, and the various groups concerned about the social, economic, and environmental conditions in Lake County. Those interviewed included all local and state governmental entities involved in the geothermal permitting process, representatives of industry and utilities, the Lake County Energy Council, and with Lake County citizens involved in the geothermal debate. The topics discussed relate directly to the impediments seen to geothermal development by those involved in the process. Environmental concerns center around land use, air quality, and flora and fauna impact, with land use being of major concern. The major socio-political problem is the overlapping or conflicting governmental jurisdictions, although the Environmental Impact Reporting Process, the prospect of industrialization, and social attitudes are also of concern. (MHR)
Date: January 1, 1976
Creator: Hussey, E. T.
System: The UNT Digital Library
Study of geothermal prospects in the western United States (open access)

Study of geothermal prospects in the western United States

The commercial development potential of 13 underdeveloped geothermal prospects in the western United States has been examined and the prospects have been ranked in order of relative potential for development on the basis of investment considerations. The following were considered in the ranking: geotechnical and engineering data, energy market accessibility, administrative constraints, and environmental and socio-economic factors. The primary ranking criterion is the unit cost of energy production expected from each prospect. This criterion is obtained principally from expected reservoir temperatures and depths. Secondary criteria are administrative constraints, environmental factors and the quality of the geotechnical data. The Roosevelt, Utah, prospect ranks first in development potential followed in order by Beowawe, Nevada; Coso Hot Springs, California; Long Valley, California; and Brady's Hot Springs, Nevada.
Date: January 1, 1975
Creator: unknown
System: The UNT Digital Library
Environmental impact report (draft) (open access)

Environmental impact report (draft)

The three projects as proposed by Pacific Gas and Electric Company and the environmental analysis of the projects are discussed. Sections on the natural and social environments of the proposed projects and their surrounding areas consist of descriptions of the setting, discussions of the adverse and beneficial consequences of the project, and potential mitigation measures to reduce the effects of adverse impacts. The Environmental Impact Report includes discussions of unavoidable adverse effects, irreversible changes, long-term and cumulative impacts, growth-inducing effects, and feasible alternatives to the project. (MHR)
Date: May 1, 1980
Creator: unknown
System: The UNT Digital Library
A History of the Fitzner/Eberhardt Arid Lands Ecology Reserve: Four Decades of Environmental Research (open access)

A History of the Fitzner/Eberhardt Arid Lands Ecology Reserve: Four Decades of Environmental Research

This book describes the history of the Fitzner/Eberhardt Arid Lands Ecology Reserve. It briefly describes the setting; outlines historical land uses of the Reserve; describes its establishments and designations; and provides examples of the types of research and education projects PNNL conducted on the Reserve for over four decades. A comprehensive bibliography also is provided.
Date: September 1, 2003
Creator: O'Connor, Georganne P.; Rickard, William H.; Kennedy, Ellen P.; Dirkes, Roger L. & Feaster-Alley, Kathy
System: The UNT Digital Library