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National Atlas of the United States

Description: This is the website for the National Atlas, which provides a comprehensive, maplike view into the enormous wealth of geospatial and geostatistical data collected for the United States. It includes many detailed, interactive maps of the nation on a wide variety of subjects such as the environment, history, government, population, and climate, as well as fully documented digital cartographic datasets and articles. The website was removed from service on September 30, 2014.
Date: September 22, 2014
Creator: United States. Department of the Interior. Geological Survey
Partner: UNT Libraries Digital Projects Unit

Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Deliverable 2.5.4 Ferron sandstone lithologic strip logs, Emergy & Sevier Counties, Utah, Volume II

Description: This report contains data pertaining to the geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a Fluvial-Deltaic reservoir.
Date: December 8, 1995
Creator: Allison, M. L.
Partner: UNT Libraries Government Documents Department

The geology and hydrogeology of Bear Creek Valley Waste Disposal Areas A and B

Description: A study was undertaken of the Oil Landfarm and Burial Grounds A and B, which are three disposal sites within the Bear Creek Waste Disposal Area. The area is located west of the Y-12 plant, about 3 miles southwest of Oak Ridge, Tennessee. The purpose of this interim report is to present data collected at the Burial Grounds A and B, and to provide the results of hydrogeologic analyses. The Oil Landfarm geologic and hydrogeologic data and analyses have been submitted in a January 1984 interim report. The overall objectives of the study were to characterize the types and extent of wastes present and to define the occurrence and movement of ground water beneath the sites. The intention of this work is to provide criteria on which a design for containing the waste can be developed. Specific activities performed by Bechtel included: drilling for subsurface geologic data; installing monitoring wells; measuring permeability and ground-water flow directions; and collecting soil, sediment, surface- and ground-water, and liquid-waste samples for chemical analysis. Results are presented on the geology and ground waters.
Date: May 1, 1984
Partner: UNT Libraries Government Documents Department

Interdisciplinary study of reservoir compartments and heterogeneity. Quarterly technical progress report, July 1995--September 1995

Description: This United States Department of Energy (DOE) research project was established to document the integrated team approach for solving reservoir engineering problems. A field study integrating the disciplines of geology, geophysics, and petroleum engineering will be the mechanism for documenting the integrated approach. This is an area of keen interest to the oil and gas industry. The goal will be to provide tools and approaches that can be used to detect reservoir compartments, reach a better reserve estimate, and improve profits early in the life of a field.
Date: October 27, 1995
Creator: Kirk, C.W. Van & Thompson, R.S.
Partner: UNT Libraries Government Documents Department

Interdisciplinary study of reservoir compartments. Quarterly technical progress report, [April 1995--June 1995]

Description: This United States Department of Energy (DOE) research project was established to document the integrated team approach for solving reservoir engineering problems. A field study integrating the disciplines of geology, geophysics, and petroleum engineering will be the mechanism for documenting the integrated approach. This is an area of keen interest to the oil and gas industry. The goal will be to provide tools and approaches that can be used to detect reservoir compartments, reach a better reserve estimate, and improve profits early in the life of a field. Brief summaries are presented for reservoir characterization; documentation of the BVW-BVZ pay discrimination technique; reservoir simulation; and outcrop analog.
Date: July 21, 1995
Creator: Van Kirk, C.W. & Thompson, R.S.
Partner: UNT Libraries Government Documents Department

Interdisciplinary study of reservoir compartments. Quarterly technical progress report, October 1, 1994--December 31, 1994

Description: This DOE research project was established to document the integrated team approach for solving reservoir engineering problems. A field study integrating the disciplines of geology, geophysics, and petroleum engineering will be the mechanism for documenting the integrated approach. This is an area of keen interest to the oil and gas industry. The goal will be to provide tools and approaches that can be used to detect reservoir compartments, reach a better reserve estimate, and improve profits early in the life of a field. Brief summaries are provided for the following six tasks: reservoir selection and data gathering; outcrop/core/log analysis/and correlations; internal architecture description; seismic analysis; detailed reservoir engineering evaluation; and permeability experimental work. Where appropriate reports by the research professors and the research assistants are included in the appendix.
Date: January 27, 1995
Creator: Van Kirk, C.W.
Partner: UNT Libraries Government Documents Department

Improved oil recovery in fluvial dominated deltaic reservoirs of Kansas -- near-term. Seventh quarterly report, February 1, 1995--April 1, 1995

Description: The objective of this project is to address waterflood problems of the type found in Cherokee Group reservoirs in southeastern Kansas and in Morrow sandstone reservoirs in southwestern Kansas. Two demonstration sites operated by different independent oil operators are involved in the project. The Nelson Lease (an existing waterflood) is located in Allen County, Kansas in the N.E. Savonburg Field and is operated by James E. Russell Petroleum, Inc. The Stewart Field (on latter stage of primary production) is located in Finney County, Kansas and is operated by Sharon Resources, Inc. General topics to be addressed will be (1) reservoir management and performance evaluation, (2) waterflood optimization, and (3) the demonstration of recovery processes involving off-the-shelf technologies which can be used to enhance waterflood recovery, increase reserves, and reduce the abandonment rate of these reservoir types. The reservoir management portion of the project will involve performance evaluation and will include such work as (1) reservoir characterization and the development of a reservoir database, (2) identification of operational problems, (3) identification of near wellbore problems, (4) identification of unrecovered mobile oil and estimation of recovery factors, and (5) identification of the most efficient and economical recovery process. The waterflood optimization portion of the project involves only the Nelson Lease. It will be based on the performance evaluation and will involve (1) design and implementation of a water cleanup system for the waterflood, (2) application of well remedial work such as polymer gel treatments to improve vertical sweep efficiency, and (3) changes in waterflood patterns to increase sweep efficiency. Finally, it is planned to implement an improved recovery process, possibly polymer augmented waterflood: on both field demonstration sites.
Date: April 15, 1995
Creator: Green, D.W.; Willhite, G.P.; Walton, A.; Schoeling, L.; Reynolds, R.; Michnick, M. et al.
Partner: UNT Libraries Government Documents Department

National Geoscience Data Repository System: Phase 2, Planning and pilot study. Progress report, February--April 1995

Description: The American Geological Institute (AGI) recently completed the first phase of a multiphase program to study and implement a National Geoscience Data Repository System (NGDRS) to capture and preserve valuable geoscientific data. They study was initiated in response to the fact that tens of billions of dollars worth of domestic eological and geophysical data are in jeopardy of being irrevocably lost or destroyed as a consequence of the ongoing downsizing of the US energy and minerals industry. The NGDRS would serve as an important and valuable source of information for the entire geoscience community for a variety of applications, including environmental protection, water resource management, global change studies, reducing risks from earthquakes and other geologic hazards, and basic and applied research. The repository system would also contain critical data that would enable domestic energy and minerals companies to expand their exploration and production programs in the United States for increased recovery of domestic oil, gas, and mineral resources. Progress is reported on the second phase of this program.
Date: May 1, 1995
Partner: UNT Libraries Government Documents Department

Analysis and evaluation of interwell seismic logging techniques for reservoir characterization. [Quarterly report], April 1--June 30, 1992

Description: The objective of this three-year research program is to investigate interwell seismic logging techniques for indirectly interpreting oil and gas reservoir geology and pore fluid permeability. This work involves a balanced study of advanced theoretical and numerical modeling of seismic waves transmitted between pairs of reservoir wells combined with experimental data acquisition and processing of measurements at controlled sites as well as in full-scale reservoirs. This reservoir probing concept is, aimed at demonstrating unprecedented high-resolution measurements and detailed interpretation of heterogeneous hydrocarbon-bearing formations. Part of the numerical model task is to investigate the sensitivity of the in-situ rock-physical properties of the formation such as porosity and permeability on three-component seismograms, and the pressure, as well as phase velocity and attenuation. For this purpose we have developed software to simulate synthetic seismograins associated with a point-source (compressional wave), and a point force (shear wave), in stratified fluid-filled porous media. In addition, we have developed software to calculate phase velocity and attenuation from interwell seismic waveforms. To demonstrate the use of these capabilities we present examples to simulate seismograms and dispersion and attenuation curves.
Date: December 31, 1992
Creator: Parra, J. O.
Partner: UNT Libraries Government Documents Department

Analysis and evaluation of interwell seismic logging techniques for reservoir characterization. [Quarterly report], April 1--June 30, 1993

Description: The objective of this three-year research program is to investigate interwell seismic logging techniques for indirectly interpreting oil and gas reservoir geology and rock physical properties. This work involves a balanced study of advanced theoretical and numerical modeling of seismic waves transmitted between pairs of reservoir wells combined with experimental dam acquisition and processing of measurements at controlled sites as well as in full-scale reservoirs. This reservoir probing concept is aimed at demonstrating high-resolution measurements and detailed interpretation of heterogeneous hydrocarbon-bearing formations. In this quarterly report technical progress is summarized for Task 3, data processing and analysis of: preliminary interpretation of interwell seismic data from wells 5-7 and 7-7 at the Gypsy Test Site; and the response of a thin layer in an anistropic shale.
Date: December 31, 1993
Creator: Parra, J.O.
Partner: UNT Libraries Government Documents Department

Application of artifical intelligence to reservoir characterization: An interdisciplinary approach. Annual report, October 1993--October 1994

Description: This basis of this research is to apply novel techniques from Artificial Intelligence and Expert Systems in capturing, integrating and articulating key knowledge from geology, geostatistics, and petroleum engineering to develop accurate descriptions of petroleum reservoirs. The ultimate goal is to design and implement a single powerful expert system for use by small producers and independents to efficiently exploit reservoirs.
Date: July 1, 1995
Creator: Kelkar, B.G.; Gamble, R.F.; Kerr, D.R.; Thompson, L.G. & Shenoi, S.
Partner: UNT Libraries Government Documents Department

Application of artificial intelligence to reservoir characterization: An interdisciplinary approach. [Quarterly report], January 1--March 31, 1995

Description: This basis search is to apply novel techniques from Artificial Intelligence (AI) and Expert Systems in capturing, integrating and articulating key knowledge from geology, geostatistics, and petroleum engineering to develop accurate descriptions of petroleum reservoirs. The ultimate goal is to design and implement a single powerful expert system for use by small producers and independents to efficiently exploit reservoirs. The overall project plan to design the system to create integrated reservoir description begins by initially developing an AI-based methodology for producing large-scale reservoir descriptions generated interactively from geology and well test data. Parallel to this task is a second task that develops an AI-based methodology that uses facies-biased information to generate small-scale descriptions of reservoir properties such as permeability and porosity. The third task involves consolidation and integration of the large-scale and small-scale methodologies to produce reservoir descriptions honoring all the available data. The final task will be technology transfer. With this plan, we have carefully allocated and sequenced the activities involved in each of the tasks to promote concurrent progress towards the research objectives. The results of the integration are not merely limited to obtaining better characterizations of individual reservoirs. They have the potential to significantly impact and advance the discipline of reservoir characterization itself.
Date: July 1, 1995
Creator: Kelkar, B.G.; Kerr, D.R.; Thompson, L.G. & Shenoi, S.
Partner: UNT Libraries Government Documents Department

Application of integrated reservoir management and reservoir characterization to optimize infill drilling. [Quarterly] report, March 13, 1995--June 12, 1995

Description: The primary objective of this project is to conduct a cost-shared geologically targeted infill drilling filed demonstration that will enhance the domestic producibility of shallow shelf carbonate reservoirs by demonstration and technology transfer of the advanced recovery technologies employed, application of integrated reservoir management and reservoir characterization. Progress reports are presented for this past quarter for the following tasks: management and administration; reservoir characterization and analysis; integrated reservoir management; and technology transfer.
Date: June 12, 1995
Creator: Pande, P.K.
Partner: UNT Libraries Government Documents Department

Preparation of northern mid-continent petroleum atlas

Description: Project will develop a prototype for a digital and hard-copy atlas of petroleum fields and reservoirs in the northern Mid-continent region. A limited number of reservoirs in Kansas are to be included in the prototype project, but the goal is to expand beyond the prototype atlas to include significant reservoirs representing the major plays in Kansas, Nebraska, South Dakota, North Dakota, the Williston basin portion of Montana, the Denver-Julesburg basin of eastern Colorado and southeastern Colorado. Primary products of the prototype atlas will be on-line accessible digital data bases covering two selected petroleum plays in Kansas. `Pages` and data schema for the first field studies of the atlas have been developed and are accessible through the World-Wide-Web. The atlas structure includes access to geologic, geophysical and production information at levels from the regional, to the field to the individual well. Several approaches have been developed that provide efficient and flexible screening and search procedures. The prototype of the digital atlas is accessible through the Kansas Geological Survey Petroleum Research Section (PRS) HomePage (The Universal Resource Locator [URL] is http://www.kgs. ukans.edu/PRS/PRS.html). The DPA HomePage is available directly at http://www.kg.ukans.edu/DPA/dpaHome.html. Technology transfer is underway through the use of monthly electronic updates and the on- line availability of DPA products. Quarterly Progress Reports are posted on the digital Petroleum Atlas HomePage.
Date: April 15, 1996
Creator: Gerhard, L.C.; Carr, T.R. & Watney, W.L.
Partner: UNT Libraries Government Documents Department

A preliminary guidebook for identifying stratigraphic contacts at the Nevada Test Site

Description: Lithologic variation, regional depositional trends, and the lack of written guidelines have resulted in inconsistencies in the recognition of stratigraphic contacts in drill holes at the Nevada Test Site (NTS). Stratigraphic identification, based on mineralogy of discrete samples, can be augmented by geophysical logs and downhole movies to more accurately and consistently locate contacts between units. Criteria are established for locating the base of the Pahute Mesa ash-flow tuff, the top of the Ammonia Tanks ash-flow tuff, the top of the Ammonia Tanks bedded tuff, and the top and the base of the Rainier Mesa Tuff.
Date: January 1, 1992
Creator: Pawloski, G.A.; McKague, H.L.; Wagoner, J.L. & McKinnis, W.B.
Partner: UNT Libraries Government Documents Department

Los Alamos National Laboratory Yucca Mountain Project publications (1979--1994)

Description: This over-300 title publication list reflects the accomplishments of Los Alamos Yucca Mountain Site Characterization Project researchers, who, since 1979, have been conducting multidisciplinary research to help determine if Yucca Mountain, Nevada, is a suitable site for a high-level waste repository. The titles can be accessed in two ways: by year, beginning with 1994 and working back to 1979, and by subject area: mineralogy/petrology/geology, volcanism, radionuclide solubility/groundwater chemistry; radionuclide sorption and transport; modeling/validation/field studies; summary/status reports, and quality assurance.
Date: November 1, 1995
Creator: Bowker, L.M.; Espinosa, M.L. & Klein, S.H.
Partner: UNT Libraries Government Documents Department

Examining near-source effects in the far field

Description: A fundamental objective of the S-6 (physical basis for discrimination) sub-task of the CTBT R&D Seismic Monitoring Program at Los Alamos is to analyze the sensitivity of the regional signal to source configuration, material properties, geologic layering and structure, along with complications along the path of the signal. Our approach is to combine the results of conventional analysis of field data from explosions and earthquakes with results of numerical models of actual and idealized situations. Existing first-principles, finite difference codes allow us to examine source effects in the non-linear regime; linking the results of these near-source calculations to finite difference, anelastic wave propagation codes allows us to examine the effect of various source region and propagation path characteristics on signals observed at regional distances. An investigation of discriminant differences for the DIVIDER and CORREO underground nuclear explosions is provided as an example of the approach used.
Date: September 1, 1995
Creator: App, F.N.; Bos, R.J.; Dey, T.N.; Jones, E.M.; Kamm, J.R. & Taylor, S.R.
Partner: UNT Libraries Government Documents Department

Exploratory shaft facility: It`s role in the characterization of the Yucca Mountain site for a potential nuclear repository

Description: The US Department of Energy is characterizing Yucca Mountain, Nevada, to assess its suitability as a potential site for the permanent disposal of high-level radioactive waste from nuclear power plants and defense related activities. The assessment activities include surface investigations, drill holes from the surface, and an underground facility for in situ characterization tests. This underground exploratory shaft facility is being designed to meet the criteria for characterizing the mountain as described in the Site Characterization Plan. 9 refs., 9 figs., 1 tab.
Date: March 1, 1990
Creator: Kalia, H.N. & Merson, T.J.
Partner: UNT Libraries Government Documents Department

Erosion and deposition on the Pajarito Plateau, New Mexico, and implications for geomorphic responses to late Quaternary climatic changes

Description: The Pajarito Plateau of northern New Mexico contains a rich and diverse record of late Quaternary landscape changes in a variety of geomorphic settings that include gently-sloping mesa tops, steep canyon walls, and canyon bottoms. A broad range of investigations during the past decade, motivated by environmental and seismic hazard concerns, have resulted in examination of the characteristics, stratigraphy, and age of sediments and soils at numerous locations throughout the Plateau. Geochronologic control is provided by >140 radiocarbon dates supplemented by soil characterization and tephrochronology. In this paper we first summarize some of the results of recent and ongoing work on late Quaternary deposits on the Pajarito Plateau, illustrating both the complexity of the geomorphic record and some common elements that have been observed in multiple locations. We then use these observations, in combination with other work in the Southwest, to make some inferences about the local geomorphic response to regional climatic changes. Because the geomorphic and paleoclimatic records are fragmentary, and because the relations between large scale climate changes and local variations in precipitation, vegetation, and geomorphic processes are not fully understood, many uncertainties exist concerning the response of the local landscape to past climatic fluctuations. In addition, variations in local landscape sensitivity related to prior erosional history and spatial variations in vegetation, and the localized nature of many storms, probably contribute to the complexity of the geomorphic record. Nevertheless, the work discussed in this paper suggests a strong relation between regional climatic changes and local geomorphic history, and provides a framework for considering relations between modem processes, the record of past landscape changes, and future erosion and deposition on the Plateau and in surrounding areas.
Date: April 1, 1996
Creator: Reneau, S.L.; McDonald, E.V.; Gardner, J.N.; Longmire, P.A.; Kolbe, T.R.; Carney, J.S. et al.
Partner: UNT Libraries Government Documents Department

Joint orientation and characteristics as observed in a trench excavated near TA-3 and a basement excavated at TA-55

Description: Walls of excavations in the Bandelier Tuff for pipelines and foundations for structures provide excellent areas to determine the orientation (strike and dip) and characteristics of the joints (frequency, width, and type of material filling the joint). Joints or fractures are commonly associated with structural adjustments such as faulting; however, joints formed in the tuff mainly result from the shrinkage of the ash-flow tuff as it cools. The presence of faults can restrict the siting of buildings or structures. In waste disposal operations, open joints can be pathways for the transport of contaminants.
Date: October 1, 1995
Creator: Purtymun, W.D.; Koenig, E.; Morgan, T. & Sagon, E.
Partner: UNT Libraries Government Documents Department

K/AR dating of clinoptilolite, mordenite, and associated clays from Yucca Mountains, Nevada

Description: Zeolites are abundant in the geologic record in both continental and marine environments. The purpose of the present study is to evaluate the utility of K-bearing zeolites for dating by the K/Ar method to determine the time of zeolite diagenesis at Yucca Mountain, Nevada (Fig. 1). At Yucca Mountain, K-rich clinoptilolite and possibly mordenite are the only potentially K/Ar dateable secondary minerals present in the zeolite-rich tuffs except for some illite/smectites ({ge}10% illite layers) associated with these minerals. Direct dating of K-rich clinoptilolite, the most abundant zeolite in the altered tuffs, is important to delineate zeolite chronology as part of the site characterization of Yucca Mountain.
Date: July 1, 1993
Creator: WoldeGabriel, G.
Partner: UNT Libraries Government Documents Department

Geochemical evidence for waning magmatism and polycyclic volcanism at Crater Flat, Nevada

Description: Petrologic and geochemical studies of basaltic rocks in the Yucca Mountain region are currently focused on understanding the evolution of volcanism in the Crater Flat volcanic field and the mechanisms of polycyclic volcanism at the Lathrop Wells volcanic center, the youngest center in the Crater Flat volcanic field. Geochemical and petrologic data indicate that the magma chambers which supplied the volcanic centers in Crater Flat became situated at greater crustal depths as the field evolved. Deep magma chambers may be related to a waning magma flux that was unable to sustain upper crystal magma conduits and chambers. Geochemical data from the Lathrop Wells volcanic center indicate that eruptive units identified from field and geomorphic relationships are geochemically distinct. The geochemical variations cannot be explained by fractional crystallization of a single magma batch, indicating that several magma batches were involved in the formation of the Lathrop Wells center. Considering the low magma flux in the Yucca Mountain region in the Quaternary, the probability of several magma batches erupting essentially simultaneously at Lathrop Wells in considered remote. It is more likely that the Lathrop Wells center was formed by a series of eruptions that took place over many thousands of years. The geochemical data from Lathrop Wells is consistent with the concept of a complex, polycyclic volcano, which was originally proposed based on geomorphic and soil-development data.
Date: December 31, 1991
Creator: Perry, F.V. & Crowe, B.M.
Partner: UNT Libraries Government Documents Department

Field deployment test of laser-induced breakdown spectroscopy (LIBS) technology at the Yucca Mountain Exploratory Studies Facility, Test Alcove No. 1, March 2-9, 1994: Milestone Report LA4047

Description: A field test in the Exploratory Studies Facility at Yucca Mountain, Nevada was performed to determine the feasibility of real-time elemental analysis of rock encountered in air core drilling using the technique of laser-induced breakdown spectroscopy (LIBS). Over the period March 2-9, 1994, hundreds of LIBS spectra were collected in real-time, reflecting the elemental composition of dust produced at the drill head of the second horizontal core hole in Test Alcove No. 1. The particle-laden, drill-coring effluent air stream served as the means to obtain a representative rock sample immediately surrounding the drill bit. LIBS spectra were taken with the spectral range centered at 250, 330, 410, and 500 nm so that representative, overlapping spectral coverage from 200 to 550 nm was obtained for the dust. Spectral lines for the major elements Si, Al, K, Na, and Fe and the minor elements Ca, Mg, Ti, and Mn were observed. Some simple engineering improvements to the cyclone separator were identified if this approach to dust analysis is pursued in the future.
Date: January 1, 1996
Creator: Blacic, J.; Pettit, D. & Cremers, D.
Partner: UNT Libraries Government Documents Department

Geologic evaluation of six nonwelded tuff sites in the vicinity of Yucca Mountain, Nevada for a surface-based test facility for the Yucca Mountain Project

Description: Outcrops of nonwelded tuff at six locations in the vicinity of Yucca Mountain, Nevada, were examined to determine their suitability for hosting a surface-based test facility for the Yucca Mountain Project. Investigators will use this facility to test equipment and procedures for the Exploratory Studies Facility and to conduct site characterization field experiments. The outcrops investigated contain rocks that include or are similar to the tuffaceous beds of Calico Hills, an important geologic and hydrologic barrier between the potential repository and the water table. The tuffaceous beds of Calico Hills at the site of the potential repository consist of both vitric and zeolitic tuffs, thus three of the outcrops examined are vitric tuffs and three are zeolitic tuffs. New data were collected to determine the lithology, chemistry, mineralogy, and modal petrography of the outcrops. Some preliminary data on hydrologic properties are also presented. Evaluation of suitability of the six sites is based on a comparison of their geologic characteristics to those found in the tuffaceous beds of Calico Hills within the exploration block.
Date: October 1, 1993
Creator: Broxton, D.E.; Chipera, S.J.; Byers, F.M. Jr. & Rautman, C.A.
Partner: UNT Libraries Government Documents Department