Latest content added for UNT Digital Library Collection: Technical Report Archive & Image Library (TRAIL)https://digital.library.unt.edu/explore/collections/TRAIL/browse/?fq=untl_decade:1990-1999&fq=untl_institution:UNTGD&fq=str_location_country:United+States2023-07-03T19:25:22-05:00UNT LibrariesThis is a custom feed for browsing UNT Digital Library Collection: Technical Report Archive & Image Library (TRAIL)Appendix B: Arrival Time Data2023-07-03T19:25:22-05:00https://digital.library.unt.edu/ark:/67531/metadc2135242/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc2135242/"><img alt="Appendix B: Arrival Time Data" title="Appendix B: Arrival Time Data" src="https://digital.library.unt.edu/ark:/67531/metadc2135242/small/"/></a></p><p>"This appendix contains phase arrival information for local and near-regional events which have been well recorded by the Anna Seismic Network." (p. B1)</p>Appendix A. Station Reliability Tables2023-07-03T19:25:22-05:00https://digital.library.unt.edu/ark:/67531/metadc2135241/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc2135241/"><img alt="Appendix A. Station Reliability Tables" title="Appendix A. Station Reliability Tables" src="https://digital.library.unt.edu/ark:/67531/metadc2135241/small/"/></a></p><p>"The appendix contains daily and monthly tabulations of running time for each station" monitoring earthquake activity in the Western Ohio - Indiana region. (p. A1)</p>Coal Reserves of the Boltsfork Quadrangle, Kentucky: A Coal Recoverability Study2022-08-16T20:57:46-05:00https://digital.library.unt.edu/ark:/67531/metadc1983336/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1983336/"><img alt="Coal Reserves of the Boltsfork Quadrangle, Kentucky: A Coal Recoverability Study" title="Coal Reserves of the Boltsfork Quadrangle, Kentucky: A Coal Recoverability Study" src="https://digital.library.unt.edu/ark:/67531/metadc1983336/small/"/></a></p><p>Abstract: "This report presents a U.S. Bureau of Mines study that incorporates coal mining factors, cola recovery factors, and economic factors into the definition of an economically recoverable coal resource. The relationship between these factors to the Energy Information Administration's estimate of U.S. coal resources--the "Demonstrated Reserve Base"--is discussed. The Boltsfork 7 1/2-minute quadrangle in eastern Kentucky was selected as the stud area. Results indicate that of the original 280.2 M tons of resource in the quadrangle, only 99.8 M tons (35.6%) is recoverable at a mining cost of $25 per ton or less" (p. 1).</p>Reactor Operations Division Monthly Report2022-02-05T18:41:35-06:00https://digital.library.unt.edu/ark:/67531/metadc1254608/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1254608/"><img alt="Reactor Operations Division Monthly Report" title="Reactor Operations Division Monthly Report" src="https://digital.library.unt.edu/ark:/67531/metadc1254608/small/"/></a></p><p>Monthly report from the Reactor Operations Division of the Brookhaven National Laboratory that covers various topics like the different operations conducted, and the amount of energy consumed.</p>Improved Calibration Facility2021-12-18T19:06:18-06:00https://digital.library.unt.edu/ark:/67531/metadc1254060/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1254060/"><img alt="Improved Calibration Facility" title="Improved Calibration Facility" src="https://digital.library.unt.edu/ark:/67531/metadc1254060/small/"/></a></p><p>Aid in redesign of the calibration facility in order to: 1. Reduce the rate of exposure for calibration personnel below 1 mr/hr; 2. Reduce the rate of exposure outside of the 3745 Building; 3. Reduce the risk of breaking radium sources; 4. Improve the efficiency of calibration procedures by: a. Allowing calibration to be done faster; b. Providing several calibration ranges which can operate simultaneously in the present space allowed; c. Allowing instrument survey work to proceed while calibration work is done. A well-type calibration installation is proposed and a brief description of the required shielding is included.</p>Geology and Mineral Resources of the Hailey 1°x2° Quadrangle and the Western Part of the Idaho Falls 1°x2° Quadrangle, Idaho2021-11-04T16:54:37-05:00https://digital.library.unt.edu/ark:/67531/metadc958051/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958051/"><img alt="Geology and Mineral Resources of the Hailey 1°x2° Quadrangle and the Western Part of the Idaho Falls 1°x2° Quadrangle, Idaho" title="Geology and Mineral Resources of the Hailey 1°x2° Quadrangle and the Western Part of the Idaho Falls 1°x2° Quadrangle, Idaho" src="https://digital.library.unt.edu/ark:/67531/metadc958051/small/"/></a></p><p>Report containing a series of chapters discussing the geologic and mineral resources of the Hailey Quadrangle and Western part of the Idaho Falls Quadrangle in Idaho.</p>Acoustic Emission/Flaw Relationships for Inservice Monitoring of LWRs2021-03-18T12:52:18-05:00https://digital.library.unt.edu/ark:/67531/metadc1202751/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1202751/"><img alt="Acoustic Emission/Flaw Relationships for Inservice Monitoring of LWRs" title="Acoustic Emission/Flaw Relationships for Inservice Monitoring of LWRs" src="https://digital.library.unt.edu/ark:/67531/metadc1202751/small/"/></a></p><p>"The program concerning Acoustic Emission/Flaw Relationships for Inservice Monitoring of LWRs was entitled in FY76 with the objective of validating the application of acoustic emission (AE) to monitor nuclear reactor pressure-containing components during operation to detect cracking."</p>Geophysical Investigations of the Western Ohio-Indiana Region : Annual Report, October 1988-September 19892021-03-18T12:51:59-05:00https://digital.library.unt.edu/ark:/67531/metadc1202738/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1202738/"><img alt="Geophysical Investigations of the Western Ohio-Indiana Region : Annual Report, October 1988-September 1989" title="Geophysical Investigations of the Western Ohio-Indiana Region : Annual Report, October 1988-September 1989" src="https://digital.library.unt.edu/ark:/67531/metadc1202738/small/"/></a></p><p>A report regarding geophysical investigations of the Western Ohio-Indiana Region</p>[MACCS Output Listings]2021-01-27T08:27:51-06:00https://digital.library.unt.edu/ark:/67531/metadc1752430/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1752430/"><img alt="[MACCS Output Listings]" title="[MACCS Output Listings]" src="https://digital.library.unt.edu/ark:/67531/metadc1752430/small/"/></a></p><p>Data listing for three sample problems are provided to illustrate the use of MACCS (MELCOR [We84] Accident Consequence Code System developed by Sandia National Laboratories) referred to in the accompanying report as Problems A, B, and C.</p>MELCOR Accident Consequence Code System (MACCS)2020-11-22T06:17:25-06:00https://digital.library.unt.edu/ark:/67531/metadc1202744/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1202744/"><img alt="MELCOR Accident Consequence Code System (MACCS)" title="MELCOR Accident Consequence Code System (MACCS)" src="https://digital.library.unt.edu/ark:/67531/metadc1202744/small/"/></a></p><p>"This report describes the MACCS computer code. The purpose of this code is to simulate the impact of severe accidents at nuclear power plants on the surrounding environment.</p>Computer Analysis of Geochemical Data of Stream Sediment and Waters of the Montrose 1° X 2° Quadrangle, Colorado2020-08-30T13:59:14-05:00https://digital.library.unt.edu/ark:/67531/metadc1202754/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1202754/"><img alt="Computer Analysis of Geochemical Data of Stream Sediment and Waters of the Montrose 1° X 2° Quadrangle, Colorado" title="Computer Analysis of Geochemical Data of Stream Sediment and Waters of the Montrose 1° X 2° Quadrangle, Colorado" src="https://digital.library.unt.edu/ark:/67531/metadc1202754/small/"/></a></p><p>The following preliminary report is a computer analysis of HSSR data from the Montrose 1x2 Quadrangle, Colorado.</p>Photogeologic map, Stinking Spring Creek-1 quadrangle, Emery County, Utah2020-08-28T15:42:04-05:00https://digital.library.unt.edu/ark:/67531/metadc1393113/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1393113/"><img alt="Photogeologic map, Stinking Spring Creek-1 quadrangle, Emery County, Utah" title="Photogeologic map, Stinking Spring Creek-1 quadrangle, Emery County, Utah" src="https://digital.library.unt.edu/ark:/67531/metadc1393113/small/"/></a></p><p>A Photogeologic map of the Stinking Spring Creek Quadrangle, located in Emery County, Utah. Prepare in cooperation with the Atomic Energy Commission.</p>Airborne radioactivity survey of the Miller Hill area, Carbon County, Wyoming2020-06-16T05:16:20-05:00https://digital.library.unt.edu/ark:/67531/metadc1393470/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1393470/"><img alt="Airborne radioactivity survey of the Miller Hill area, Carbon County, Wyoming" title="Airborne radioactivity survey of the Miller Hill area, Carbon County, Wyoming" src="https://digital.library.unt.edu/ark:/67531/metadc1393470/small/"/></a></p><p>Aerial image shows the result of an airborne radioactive survey over an area of 65 square miles in the vicinity of Miller Hill, Carbon County, Wyoming with the approximate location of eleven radioactivity anomalies found. Text describes methods used and discusses the anomalies.</p>Photogeologic map, Kanab SE, Utah, Kane County2020-06-16T05:16:20-05:00https://digital.library.unt.edu/ark:/67531/metadc1393502/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1393502/"><img alt="Photogeologic map, Kanab SE, Utah, Kane County" title="Photogeologic map, Kanab SE, Utah, Kane County" src="https://digital.library.unt.edu/ark:/67531/metadc1393502/small/"/></a></p><p>Photogeologic map of Kanab SE, Utah, Kane County</p>Economic geology of the aluminum phosphate zone on property owned by the American Agricultural Chemical Company, land-pebble phosphate district, Florida2020-05-09T21:16:31-05:00https://digital.library.unt.edu/ark:/67531/metadc1393489/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1393489/"><img alt="Economic geology of the aluminum phosphate zone on property owned by the American Agricultural Chemical Company, land-pebble phosphate district, Florida" title="Economic geology of the aluminum phosphate zone on property owned by the American Agricultural Chemical Company, land-pebble phosphate district, Florida" src="https://digital.library.unt.edu/ark:/67531/metadc1393489/small/"/></a></p><p>This report presents all analytical data on the aluminum phosphate zone on lands owned by the American Agricultural Chemical Co. (A. A. C. Co.), and is one of a series of reports on lands of the companies active in the Land-Pebble Phosphate district.</p>Sedimentological Descriptions and Depositional Interpretations, in Sequence Stratigraphic Context, of Two 300-Meter Cores from the Upper Cretaceous Straight Cliffs Formation, Kaiparowits Plateau, Kane County, Utah2019-12-05T11:50:40-06:00https://digital.library.unt.edu/ark:/67531/metadc958061/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958061/"><img alt="Sedimentological Descriptions and Depositional Interpretations, in Sequence Stratigraphic Context, of Two 300-Meter Cores from the Upper Cretaceous Straight Cliffs Formation, Kaiparowits Plateau, Kane County, Utah" title="Sedimentological Descriptions and Depositional Interpretations, in Sequence Stratigraphic Context, of Two 300-Meter Cores from the Upper Cretaceous Straight Cliffs Formation, Kaiparowits Plateau, Kane County, Utah" src="https://digital.library.unt.edu/ark:/67531/metadc958061/small/"/></a></p><p>The following report provides detailed analyses of two 300-meter cores from upper Turonian to lower Campanian strata of the Straight Cliffs Formation, Kaiparowits Plateau, Kane County, Utah.</p>Geology of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia2019-12-05T11:50:40-06:00https://digital.library.unt.edu/ark:/67531/metadc958060/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958060/"><img alt="Geology of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia" title="Geology of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia" src="https://digital.library.unt.edu/ark:/67531/metadc958060/small/"/></a></p><p>The following report documents the geological mapping of the Harpers Ferry quadrangle, Virginia, Maryland, and West Virginia, from between 1989 and 1990.</p>Geochemical Survey of the Craig Study Area--Craig and Dixon Entrance Quadrangles and the Western Edges of the Ketchikan and Prince Rupert Quadrangles, Southeast Alaska2019-12-03T21:23:23-06:00https://digital.library.unt.edu/ark:/67531/metadc958059/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958059/"><img alt="Geochemical Survey of the Craig Study Area--Craig and Dixon Entrance Quadrangles and the Western Edges of the Ketchikan and Prince Rupert Quadrangles, Southeast Alaska" title="Geochemical Survey of the Craig Study Area--Craig and Dixon Entrance Quadrangles and the Western Edges of the Ketchikan and Prince Rupert Quadrangles, Southeast Alaska" src="https://digital.library.unt.edu/ark:/67531/metadc958059/small/"/></a></p><p>The following report documents results taken from a reconnaissance geochemical survey that was conducted in the northwest-trending Alexander terrane, Gravina-Nutzotin overlap assemblage, and Taku terrane in southeast Alaska in the Craig and Dixon Entrance quadrangles and the western edges of the Ketchikan and Prince Rupert quadrangles.</p>Mineral Resource Potential and Geology of Coronado National Forest, Southeastern Arizona and Southwestern New Mexico2019-12-03T21:23:23-06:00https://digital.library.unt.edu/ark:/67531/metadc958052/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958052/"><img alt="Mineral Resource Potential and Geology of Coronado National Forest, Southeastern Arizona and Southwestern New Mexico" title="Mineral Resource Potential and Geology of Coronado National Forest, Southeastern Arizona and Southwestern New Mexico" src="https://digital.library.unt.edu/ark:/67531/metadc958052/small/"/></a></p><p>The following report is a mineral resource assessment of Coronado National Forest of southeastern Arizona and southwestern New Mexico, formed by geologic, geochemical, and geophysical data.</p>Mineral and Energy Resources of the Roswell Resource Area, East-Central New Mexico2019-12-03T21:23:23-06:00https://digital.library.unt.edu/ark:/67531/metadc958054/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958054/"><img alt="Mineral and Energy Resources of the Roswell Resource Area, East-Central New Mexico" title="Mineral and Energy Resources of the Roswell Resource Area, East-Central New Mexico" src="https://digital.library.unt.edu/ark:/67531/metadc958054/small/"/></a></p><p>The following report presents geological data taken from studies made on the mineral and energy resources in the surface and subsurface within the Roswell Resource Area in east-central New Mexico.</p>Geochemical Signatures of Silver and Gold Deposits, Tonopah 1° x 2° Quadrangle, Nevada: Description and Applications to Exploration2019-12-03T21:23:23-06:00https://digital.library.unt.edu/ark:/67531/metadc958058/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958058/"><img alt="Geochemical Signatures of Silver and Gold Deposits, Tonopah 1° x 2° Quadrangle, Nevada: Description and Applications to Exploration" title="Geochemical Signatures of Silver and Gold Deposits, Tonopah 1° x 2° Quadrangle, Nevada: Description and Applications to Exploration" src="https://digital.library.unt.edu/ark:/67531/metadc958058/small/"/></a></p><p>The following report presents geochemical data results of 34 elements in 951 samples of altered and mineralized rock samples from mines, prospects, dumps, and drillholes in the Tonopah quadrangle, Nevada.</p>Subdivision, Subsurface Stratigraphy, and Estimated Age of Fluvial-Terrace Deposits in Northwestern Tennessee2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958045/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958045/"><img alt="Subdivision, Subsurface Stratigraphy, and Estimated Age of Fluvial-Terrace Deposits in Northwestern Tennessee" title="Subdivision, Subsurface Stratigraphy, and Estimated Age of Fluvial-Terrace Deposits in Northwestern Tennessee" src="https://digital.library.unt.edu/ark:/67531/metadc958045/small/"/></a></p><p>This report studies the fluvial-terrace deposits in northwestern Tennessee with the intention of establishing a means of correlating disjunct terrace segments along the Obion River that is independent of terrace height, to document the stratigraphy of selected terrace deposits, and to estimate their numerical ages.</p>Thermal Evolution of Sedimentary Basins in Alaska2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958047/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958047/"><img alt="Thermal Evolution of Sedimentary Basins in Alaska" title="Thermal Evolution of Sedimentary Basins in Alaska" src="https://digital.library.unt.edu/ark:/67531/metadc958047/small/"/></a></p><p>This report covers the study of thermal maturity of sedimentary basins in Alaska taken place in the early 1990s.</p>Bedrock Geology of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958048/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958048/"><img alt="Bedrock Geology of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri" title="Bedrock Geology of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri" src="https://digital.library.unt.edu/ark:/67531/metadc958048/small/"/></a></p><p>The following report interprets the geologic history of the Paducah quadrangle, focusing on depositional and tectonic evolution, particularly tectonic events that influenced sedimentation.</p>Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958066/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958066/"><img alt="Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah" title="Mineral Resources of the Notch Peak Wilderness Study Area, Millard County, Utah" src="https://digital.library.unt.edu/ark:/67531/metadc958066/small/"/></a></p><p>This report follows the investigation and findings of mineral resources in the Notch Peak Wilderness Study Area, Utah.</p>Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958084/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958084/"><img alt="Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle" title="Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle" src="https://digital.library.unt.edu/ark:/67531/metadc958084/small/"/></a></p><p>The following report analyzes the geology of the Waterford quadrangle and the Virginia part of the Point of Rocks quadrangle.</p>Isotopic Geochronology of the Leadville 1° x 2° Quadrangle, West-Central Colorado: Summary and Discussion2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958086/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958086/"><img alt="Isotopic Geochronology of the Leadville 1° x 2° Quadrangle, West-Central Colorado: Summary and Discussion" title="Isotopic Geochronology of the Leadville 1° x 2° Quadrangle, West-Central Colorado: Summary and Discussion" src="https://digital.library.unt.edu/ark:/67531/metadc958086/small/"/></a></p><p>This report follows the isotopic geolchronological study of the Leadville quadrangle in west-central Colorado. The dates provided offer important information on the age of emplacement of Proterozoic, Late Cretaceous, and Tertiary igneous rocks.</p>Shorter Contributions to the Stratigraphy and Geochronology of Upper Cretaceous Rocks in the Western Interior of the United States2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958087/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958087/"><img alt="Shorter Contributions to the Stratigraphy and Geochronology of Upper Cretaceous Rocks in the Western Interior of the United States" title="Shorter Contributions to the Stratigraphy and Geochronology of Upper Cretaceous Rocks in the Western Interior of the United States" src="https://digital.library.unt.edu/ark:/67531/metadc958087/small/"/></a></p><p>The following report presents measured sections and lithostratigraphic correlations of the units in the order to document a syntectonic unconformity in order to understand the tectonic history of the area.</p>Geochemical Survey of the Valdez 1° x 3° Quadrangle, South-Central Alaska2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958081/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958081/"><img alt="Geochemical Survey of the Valdez 1° x 3° Quadrangle, South-Central Alaska" title="Geochemical Survey of the Valdez 1° x 3° Quadrangle, South-Central Alaska" src="https://digital.library.unt.edu/ark:/67531/metadc958081/small/"/></a></p><p>The following report follows a geochemical survey and its findings in the Valdez quadrangle in south-central Alaska.</p>Correlation of the West Canyon, Lake Point, and Bannock Peak Limestones (Upper Mississippian to Middle Pennsylvanian), Basal Formations of the Oquirrh Group, Northern Utah and Southeastern Idaho2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958082/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958082/"><img alt="Correlation of the West Canyon, Lake Point, and Bannock Peak Limestones (Upper Mississippian to Middle Pennsylvanian), Basal Formations of the Oquirrh Group, Northern Utah and Southeastern Idaho" title="Correlation of the West Canyon, Lake Point, and Bannock Peak Limestones (Upper Mississippian to Middle Pennsylvanian), Basal Formations of the Oquirrh Group, Northern Utah and Southeastern Idaho" src="https://digital.library.unt.edu/ark:/67531/metadc958082/small/"/></a></p><p>The following report presents detailed lethologic and conodont biostratigraphic data from four measured sections in the lower part of the Oquirrh Group in the Oquirrh Mountains of Utah and the Deep Creek and Samaria Mountains of Idaho.</p>Geology and Geochemistry of Tertiary Volcanic Host Rocks, Sleeper Gold-Silver Deposit, Humboldt County, Nevada2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958083/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958083/"><img alt="Geology and Geochemistry of Tertiary Volcanic Host Rocks, Sleeper Gold-Silver Deposit, Humboldt County, Nevada" title="Geology and Geochemistry of Tertiary Volcanic Host Rocks, Sleeper Gold-Silver Deposit, Humboldt County, Nevada" src="https://digital.library.unt.edu/ark:/67531/metadc958083/small/"/></a></p><p>The following report focuses on the geology of the Tertiary volcanic rock formation in the Sleeper gold-silver deposit of Nevada and develops a framework for exploration and genetic models.</p>NURE Geochemical and Geophysical Surveys--Defining Prospective Terranes for United States Placer Exploration2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958085/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958085/"><img alt="NURE Geochemical and Geophysical Surveys--Defining Prospective Terranes for United States Placer Exploration" title="NURE Geochemical and Geophysical Surveys--Defining Prospective Terranes for United States Placer Exploration" src="https://digital.library.unt.edu/ark:/67531/metadc958085/small/"/></a></p><p>From introduction: "This report illustrates a method for delimiting prospective placer districts in the United States by use of National Uranium Resource Evaluation (NURE) Hydrogeochemical Stream Sediment Reconnaissance (HSSR) geochemical data and adjunct airborne spectral gamma-ray radiation data."</p>Tertiary Stratigraphy of Highly Extended Terranes, California, Arizona, and Nevada2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958079/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958079/"><img alt="Tertiary Stratigraphy of Highly Extended Terranes, California, Arizona, and Nevada" title="Tertiary Stratigraphy of Highly Extended Terranes, California, Arizona, and Nevada" src="https://digital.library.unt.edu/ark:/67531/metadc958079/small/"/></a></p><p>Proceedings of a workshop held in February 1990 called "Tertiary Stratigraphy of Highly Extended Terranes, Southern Basin and Range" at the Desert Research Center of the California State University System, Soda Springs, near Baker, California. This volume is a collection of stratigraphic data and interpretation.</p>Geology of Part of the Nelchina River Gabbronorite and Associated Rocks, South-Central Alaska2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958080/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958080/"><img alt="Geology of Part of the Nelchina River Gabbronorite and Associated Rocks, South-Central Alaska" title="Geology of Part of the Nelchina River Gabbronorite and Associated Rocks, South-Central Alaska" src="https://digital.library.unt.edu/ark:/67531/metadc958080/small/"/></a></p><p>The following report analyzes the geological features of a 6-km by 0.3-km strip of glacially polished rocks of the Nelchina River Gabbronorite located in the eastern part of the Anchorage quadrangle.</p>Whistle, a Nearly Dormant Geyser in Upper Geyser Basin, Yellowstone National Park, Wyoming: The First Geyser to be Studied by Research Drilling2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958077/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958077/"><img alt="Whistle, a Nearly Dormant Geyser in Upper Geyser Basin, Yellowstone National Park, Wyoming: The First Geyser to be Studied by Research Drilling" title="Whistle, a Nearly Dormant Geyser in Upper Geyser Basin, Yellowstone National Park, Wyoming: The First Geyser to be Studied by Research Drilling" src="https://digital.library.unt.edu/ark:/67531/metadc958077/small/"/></a></p><p>The following report follows the first research drilling study on a geyser. Whistle, a nearly dormant geyser in the upper geyser basin in Yellowstone National Park, Wyoming, has been proven to depend its water supply on deep overpressured water that's a far more extensive system than surface measurements can determine.</p>Advances Related to United States and International Mineral Resources: Developing Frameworks and Exploration Technologies2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958078/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958078/"><img alt="Advances Related to United States and International Mineral Resources: Developing Frameworks and Exploration Technologies" title="Advances Related to United States and International Mineral Resources: Developing Frameworks and Exploration Technologies" src="https://digital.library.unt.edu/ark:/67531/metadc958078/small/"/></a></p><p>The following report provides information for the public good about the origin, quality, and quantity of mineral resources world-wide. This Bulletin reports progress on some of the current activities of the Office of Mineral Resources and reflects the necessity for an international perspective regarding mineral resources and research technology.</p>Geologic Studies in the Basin and Range-Colorado Plateau Transition in Southeastern Nevada, Southwestern Utah, and Northwestern Arizona, 19952018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958049/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958049/"><img alt="Geologic Studies in the Basin and Range-Colorado Plateau Transition in Southeastern Nevada, Southwestern Utah, and Northwestern Arizona, 1995" title="Geologic Studies in the Basin and Range-Colorado Plateau Transition in Southeastern Nevada, Southwestern Utah, and Northwestern Arizona, 1995" src="https://digital.library.unt.edu/ark:/67531/metadc958049/small/"/></a></p><p>The following report is the second compilation of reports describing the geology of the Basin and Range to Colorado Plateau Transition (BARCO) area.</p>Proterozoic Geology of the Granite Village Area, Albany and Laramie Counties, Wyoming, Compared with that of the Sierra Madre and Medicine Bow Mountains of Southeastern Wyoming2018-12-18T09:48:50-06:00https://digital.library.unt.edu/ark:/67531/metadc958050/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc958050/"><img alt="Proterozoic Geology of the Granite Village Area, Albany and Laramie Counties, Wyoming, Compared with that of the Sierra Madre and Medicine Bow Mountains of Southeastern Wyoming" title="Proterozoic Geology of the Granite Village Area, Albany and Laramie Counties, Wyoming, Compared with that of the Sierra Madre and Medicine Bow Mountains of Southeastern Wyoming" src="https://digital.library.unt.edu/ark:/67531/metadc958050/small/"/></a></p><p>Abstract: "Precambrian metavolcanic rocks north and south of the village of Granite, Wyoming, belong to a sequence of isolated metavolcanic and metasedimentary masses in the Sherman Granite of the southern Laramie Mountains. Similar rocks lie to the west, in the Precambrian uplifts of the southern Medicine Bow Mountains and Sierra Madre. A major fault system, the Cheyenne belt, splits these two ranges into northern and southern domains, and may constitute a suture along which Early Proterozoic islands arcs collided with an Early Proterozoic passive margin. Projection of the Cheyenne belt into the Laramie Mountains suggests that the study area, which is 65 kilometers south of the proposed suture, comprises a distinct volcanic arc with a unique chemistry or age. However, chemistry of the volcanic rocks of the study area as determined as so far does not differ significantly from those of the Medicine Bow Mountains and Sierra Madre."</p>Dissolved Radon and Uranium, and Ground-Water Geochemistry in an Area Near Hylas, Virginia2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115091/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115091/"><img alt="Dissolved Radon and Uranium, and Ground-Water Geochemistry in an Area Near Hylas, Virginia" title="Dissolved Radon and Uranium, and Ground-Water Geochemistry in an Area Near Hylas, Virginia" src="https://digital.library.unt.edu/ark:/67531/metadc1115091/small/"/></a></p><p>Report describing the results of experiments to test for radon and uranium in ground water from samples taken near Hylas, Virginia.</p>The Slumgullion Earth Flow: A Large-Scale Natural Laboratory2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115093/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115093/"><img alt="The Slumgullion Earth Flow: A Large-Scale Natural Laboratory" title="The Slumgullion Earth Flow: A Large-Scale Natural Laboratory" src="https://digital.library.unt.edu/ark:/67531/metadc1115093/small/"/></a></p><p>A report about the Slumgullion slide and landslides. It discusses climate changed and how landslides are measured.</p>Specification of Source Zones, Recurrence Rates, Focal Depths, and Maximum Magnitudes for Earthquakes Affecting the Savannah River Site in South Carolina2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115075/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115075/"><img alt="Specification of Source Zones, Recurrence Rates, Focal Depths, and Maximum Magnitudes for Earthquakes Affecting the Savannah River Site in South Carolina" title="Specification of Source Zones, Recurrence Rates, Focal Depths, and Maximum Magnitudes for Earthquakes Affecting the Savannah River Site in South Carolina" src="https://digital.library.unt.edu/ark:/67531/metadc1115075/small/"/></a></p><p>Report presenting documentation for the development of seismicity parameters to be used as input for probabilistic seismic hazard analyses at the Savannah River Site in South Carolina.</p>Magnetic and Gravity Study of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115076/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115076/"><img alt="Magnetic and Gravity Study of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri" title="Magnetic and Gravity Study of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri" src="https://digital.library.unt.edu/ark:/67531/metadc1115076/small/"/></a></p><p>Report outlining magnetic and gravity data pertaining to Illinois, Indiana, Kentucky, and Missouri.</p>Origin of Primary and Diagenetic Carbonates in the Lacustrine Green River Formation (Eocene), Colorado and Utah2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115051/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115051/"><img alt="Origin of Primary and Diagenetic Carbonates in the Lacustrine Green River Formation (Eocene), Colorado and Utah" title="Origin of Primary and Diagenetic Carbonates in the Lacustrine Green River Formation (Eocene), Colorado and Utah" src="https://digital.library.unt.edu/ark:/67531/metadc1115051/small/"/></a></p><p>A report that used isotopic, mineralogic, and oil-yield data to delineate major hydrologic states, establish the origin of carbonate mineral phases, and determine the controls on the geochemical cycles of carbon and oxygen.</p>Base- and Precious-Metal Concentrations of Early Proterozoic Massive Sulfide Deposits in Arizona- Crustal and Thermochemical Controls of Ore Deposition2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115054/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115054/"><img alt="Base- and Precious-Metal Concentrations of Early Proterozoic Massive Sulfide Deposits in Arizona- Crustal and Thermochemical Controls of Ore Deposition" title="Base- and Precious-Metal Concentrations of Early Proterozoic Massive Sulfide Deposits in Arizona- Crustal and Thermochemical Controls of Ore Deposition" src="https://digital.library.unt.edu/ark:/67531/metadc1115054/small/"/></a></p><p>A report about early proterozoic massive sulfide deposits associated with submarine mafic to felsic metavolcano rocks are present throughout central, west-central, and northwestern Arizona. Also, production data for copper, lead, zinc, gold, and silver for most of the known deposits and prospects in 13 metallic mineral districts are summarized.</p>Clastic Pipes of Probable Solution-Collapse Origin in Jurassic Rocks of the Southern San Juan Basin, New Mexico2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115058/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115058/"><img alt="Clastic Pipes of Probable Solution-Collapse Origin in Jurassic Rocks of the Southern San Juan Basin, New Mexico" title="Clastic Pipes of Probable Solution-Collapse Origin in Jurassic Rocks of the Southern San Juan Basin, New Mexico" src="https://digital.library.unt.edu/ark:/67531/metadc1115058/small/"/></a></p><p>A report about pipes which contain downdropped strata located in the southwestern part of the San Jun Basin, New Mexico.</p>The 1992 Eruptions of Crater Peak Vent Mount Spurr Volcano, Alaska2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115041/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115041/"><img alt="The 1992 Eruptions of Crater Peak Vent Mount Spurr Volcano, Alaska" title="The 1992 Eruptions of Crater Peak Vent Mount Spurr Volcano, Alaska" src="https://digital.library.unt.edu/ark:/67531/metadc1115041/small/"/></a></p><p>A report which provides an overview of eruptions from Mount Spurr and the Alaska Volcano Observatory's response to them.</p>Patterns of Diagenesis in Lower and Middle Pennsylvania Sandstones of the Illinois Basin, Illinois, Indiana, and Kentucky.2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115028/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115028/"><img alt="Patterns of Diagenesis in Lower and Middle Pennsylvania Sandstones of the Illinois Basin, Illinois, Indiana, and Kentucky." title="Patterns of Diagenesis in Lower and Middle Pennsylvania Sandstones of the Illinois Basin, Illinois, Indiana, and Kentucky." src="https://digital.library.unt.edu/ark:/67531/metadc1115028/small/"/></a></p><p>This following report discusses the study of Lower and Middle Pennsylvanian sandstones of the Illinois Basin examined for evidence of regional diagenetic and fluid-flow patterns.</p>Geologic, Geochemical, and Isotopic Studies of a Carbonate- and Siliciclastic-Hosted Pb-Zn Deposit at Lion Hill, Vermont2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115033/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115033/"><img alt="Geologic, Geochemical, and Isotopic Studies of a Carbonate- and Siliciclastic-Hosted Pb-Zn Deposit at Lion Hill, Vermont" title="Geologic, Geochemical, and Isotopic Studies of a Carbonate- and Siliciclastic-Hosted Pb-Zn Deposit at Lion Hill, Vermont" src="https://digital.library.unt.edu/ark:/67531/metadc1115033/small/"/></a></p><p>A report about the potential for Irish-type Pb-Zn deposits in a platform rocks of western Vermont; however, at Lion Hill they contain enrichments of Pb, Zn, and Cu rather than a Pb, Zn, and Ag association.</p>Chloride Flux and Surface Water Discharge Out of Yellowstone National Park, 1982-19892018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115052/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115052/"><img alt="Chloride Flux and Surface Water Discharge Out of Yellowstone National Park, 1982-1989" title="Chloride Flux and Surface Water Discharge Out of Yellowstone National Park, 1982-1989" src="https://digital.library.unt.edu/ark:/67531/metadc1115052/small/"/></a></p><p>A report about the chloride flux from Yellowstone National Park (the Park) and the major rivers draining the Park.</p>Laccolith Complexes of Southeastern Utah: Time of Emplacement and Tectonic Setting - Workshop Proceedings2018-03-04T09:52:47-06:00https://digital.library.unt.edu/ark:/67531/metadc1115053/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1115053/"><img alt="Laccolith Complexes of Southeastern Utah: Time of Emplacement and Tectonic Setting - Workshop Proceedings" title="Laccolith Complexes of Southeastern Utah: Time of Emplacement and Tectonic Setting - Workshop Proceedings" src="https://digital.library.unt.edu/ark:/67531/metadc1115053/small/"/></a></p><p>This report summarizes much of the materials presented at the workshop and provides an extensive list of selected references pertaining to geochronology and tectonics of the Colorado Plateau to facilitate further research.</p>