Assessment of gas hydrate resources on the North Slope, Alaska, 2008
Timothy S. Collett, Warren F. Agena, Myung W. Lee, Margarita V. Zyrianova, Kenneth J. Bird, Ronald R. Charpentier, Troy Cook, David W. Houseknecht, Timothy R. Klett, Richard M. Pollastro, Christopher J. Schenk
2008, Fact Sheet 2008-3073
The U.S. Geological Survey (USGS) recently completed the first assessment of the undiscovered technically recoverable gas-hydrate resources on the North Slope of Alaska. Using a geology-based assessment methodology, the USGS estimates that there are about 85 trillion cubic feet (TCF) of undiscovered, technically recoverable gas resources within gas hydrates in...
Ground-water quality data in the San Fernando-San Gabriel study unit, 2005— Results from the California GAMA program
Michael Land, Kenneth Belitz
2008, Data Series 356
Ground-water quality in the approximately 460 square mile San Fernando-San Gabriel study unit (SFSG) was investigated between May and July 2005 as part of the Priority Basin Assessment Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basin Assessment Project was developed in response to the...
Isotope and Chemical Methods in Support of the U.S. Geological Survey Science Strategy, 2003-2008
R. O. Rye, C. A. Johnson, G. P. Landis, A. H. Hofstra, P. Emsbo, C. A. Stricker, A.G. Hunt, B.G. Rusk
2008, Fact Sheet 2008-3083
Principal functions of the Mineral Resources Program are providing information to decision-makers related to mineral deposits on federal lands and predicting the environmental consequences of the mining or natural weathering of those deposits. Performing these functions requires that predictions be made of the likelihood of undiscovered deposits. The predictions are...
Geophysical Logs, Aquifer Tests, and Water Levels in Wells in and Near the North Penn Area 7 Superfund Site, Upper Gwynedd Township, Montgomery County, Pennsylvania, 2002-2006
Lisa A. Senior, Randall W. Conger, Philip H. Bird
2008, Scientific Investigations Report 2008-5154
Ground water in the vicinity of several industrial facilities in Upper Gwynedd Township and Lansdale Borough, Montgomery County, Pa., is contaminated with several volatile organic compounds (VOCs). The 2-square-mile area was placed on the National Priorities List as the North Penn Area 7 Superfund Site by the U.S. Environmental Protection...
A Brief Test of the Tokyo Sokushin VSE-355G3 Strong Motion Velocity Seismometer
Charles R. Hutt, John R. Evans, Isamu Yokoi
2008, Open-File Report 2008-1311
The VSE-355G3 seismometer is a broadband seismometer (called a 'servo velocity meter' by Tokyo Sokushin) with a specified clip level of 2 m/s and a flat response to earth velocity from 0.008 Hertz (Hz) to 70 Hz. Mr. Yokoi and Mr. Kurahashi of Tokyo Sokushin shipped one instrument to the...
Dynamics of magma supply to Kilauea volcano, Hawai‘i: Integrating seismic, geodetic and eruption data
Thomas L. Wright, F. W. Klein
2008, Book chapter, Dynamics of crustal magma transfer, storage and differentiation
We focus on movement of magma beneath Kīlauea from the long summit eruption in 1967–1968 through the first historical sustained eruption on the east rift zone (Mauna Ulu 1969–1974), ending with the occurrence of a magnitude 7.2 earthquake beneath Kīlauea's eastern south flank. Magma from the Hawai‘iian hot spot continuously...
An evaluation of selected extraordinary floods in the United States reported by the U.S. Geological Survey and implications for future advancement of flood science
John E. Costa, Robert D. Jarrett
2008, Scientific Investigations Report 2008-5164
Thirty flood peak discharges determine the envelope curve of maximum floods documented in the United States by the U.S. Geological Survey. These floods occurred from 1927 to 1978 and are extraordinary not just in their magnitude, but in their hydraulic and geomorphic characteristics. The reliability of the computed discharge of...
Wyoming Landscape Conservation Initiative Science Workshop Proceedings, May 15-17, 2007
Frank D’Erchia
2008, Scientific Investigations Report 2008-5073
The U.S. Geological Survey (USGS) hosted a Wyoming Landscape Conservation Initiative (WLCI) Science Workshop at the University of Wyoming on May 15, 16, and 17, 2007. The goal of the workshop was to gather information from stakeholders about research needs and existing data resources to help develop the USGS WLCI...
Geological, geochemical, and geophysical studies by the U.S. Geological Survey in Big Bend National Park, Texas
W. R. Page, K. J. Turner, R. G. Bohannon, M. E. Berry, V. S. Williams, D. P. Miggins, M. Ren, E. Y. Anthony, L. A. Morgan, P. W. C. Shanks, J. E. Gray, P. M. Theodorakos, David P. Krabbenhoft, A. H. Manning, P. A. Gemery-Hill, E. C. Hellgren, C. A. Stricker, D. P. Onorato, C. A. Finn, E. Anderson
J. E. Gray, W. R. Page, editor(s)
2008, Circular 1327
Big Bend National Park (BBNP), Tex., covers 801,163 acres (3,242 km2) and was established in 1944 through a transfer of land from the State of Texas to the United States. The park is located along a 118-mile (190-km) stretch of the Rio Grande at the United States-Mexico border. The park...
Enhanced sidescan-sonar imagery, north-central Long Island Sound
K.Y. McMullen, L.J. Poppe, P.T. Schattgen, E. F. Doran
2008, Open-File Report 2008-1174
The U.S. Geological Survey, National Oceanic and Atmospheric Administration (NOAA), and Connecticut Department of Environmental Protection have been working cooperatively to map the sea-floor geology within Long Island Sound. Sidescan-sonar imagery collected during three NOAA hydrographic surveys (H11043, H11044, and H11045) was used to interpret the surficial-sediment distribution and sedimentary...
Understanding the occurrence and transport of current-use pesticides in the San Francisco estuary watershed
Kathryn Kuivila, Michelle L. Hladik
2008, San Francisco Estuary and Watershed Science (6)
The occurrence and potential effects of current-use pesticides are of concern in the San Francisco Estuary watershed but our understanding of the spatial and temporal distribution of contamination is limited. This paper summarizes almost two decades of historical data and uses it to describe our current knowledge of the processes...
New information about Echinochiton dufoei, the Ordovician spiny chiton
J. Pojeta Jr., Jimmie DuFoe
2008, American Malacological Bulletin (25) 25-34
Echinochiton dufoei Pojeta et al., 2003 is now known from seven specimens. The new material shows the anterior end and allows for a full reconstruction of the animal. The hollow spines are circumsomal; they were flexible and perhaps moveable in rotary anterior-posterior directions. Possible functions for the hollow spines are discussed. The...
Preliminary model of porphyry copper deposits
Byron R. Berger, Robert A. Ayuso, Jeffrey C. Wynn, Robert R. Seal II
2008, Open-File Report 2008-1321
The U.S. Geological Survey (USGS) Mineral Resources Program develops mineral-deposit models for application in USGS mineral-resource assessments and other mineral resource-related activities within the USGS as well as for nongovernmental applications. Periodic updates of models are published in order to incorporate new concepts and findings on the occurrence, nature, and...
Volusia Blue Spring — A hydrological treasure
Edward R. German
2008, Fact Sheet 2008-3035
Springs are natural openings in the ground through which water beneath the surface discharges into hydrologic features such as lakes, rivers, or the ocean. The beautiful springs and spring rivers are among Florida's most valued natural resources; their gemlike refreshing waters have been a focal point of life from prehistoric...
Potential effects of a scenario earthquake on the economy of southern California: Intraregional commuter, worker, and earnings flow analysis
Benson C. Sherrouse, D. J. Hester
2008, Open-File Report 2008-1254
The Multi-Hazards Demonstration Project (MHDP) is a collaboration between the U.S. Geological Survey (USGS) and various partners from the public and private sectors and academia, meant to improve Southern California's resiliency to natural hazards (Jones and others, 2007). In support of the MHDP objectives, the ShakeOut Scenario was developed. It...
Selected Water- and Sediment-Quality, Aquatic Biology, and Mine-Waste Data from the Ely Copper Mine Superfund Site, Vershire, VT, 1998-2007
Denise M. Argue, Richard G. Kiah, Nadine M. Piatak, Robert R. Seal II, Jane M. Hammarstrom, Edward Hathaway, James F. Coles
2008, Data Series 378
The data contained in this report are a compilation of selected water- and sediment-quality, aquatic biology, and mine-waste data collected at the Ely Copper Mine Superfund site in Vershire, VT, from August 1998 through May 2007. The Ely Copper Mine Superfund site is in eastern, central Vermont (fig. 1) within...
Simulation of Ground-Water Flow and Effects of Ground-Water Irrigation on Base Flow in the Elkhorn and Loup River Basins, Nebraska
Steven M. Peterson, Jennifer S. Stanton, Amanda T. Saunders, Jesse R. Bradley
2008, Scientific Investigations Report 2008-5143
Irrigated agriculture is vital to the livelihood of communities in the Elkhorn and Loup River Basins in Nebraska, and ground water is used to irrigate most of the cropland. Concerns about the sustainability of ground-water and surface-water resources have prompted State and regional agencies to evaluate the cumulative effects of...
Base of principal aquifer for the Elkhorn-Loup model area, North-Central Nebraska
V. L. McGuire, Steven M. Peterson
2008, Scientific Investigations Map 3042
In Nebraska, the water managers in the Natural Resources Districts and the Nebraska Department of Natural Resources are concerned with the effect of ground-water withdrawal on the availability of surface water and the long-term effects of ground-water withdrawal on ground- and surface-water resources. In north-central Nebraska, in the Elkhorn and...
Devonian carbonate platform of eastern Nevada: Facies, surfaces, cycles, sequences, reefs, and cataclysmic Alamo Impact Breccia
John E. Warme, Jared R. Morrow, Charles Sandberg
2008, Book chapter, Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas of Arizona, California, and Nevada
Devonian limestone and dolostone formations are superbly exposed in numerous mountain ranges of southeastern Nevada. The Devonian is as thick as 1500 m there and reveals continuous exposures of a classic, long-lived, shallow-water carbonate platform. This field guide provides excursions to Devonian outcrops easily reached from the settlement of Alamo,...
U.S.-Mexico Border Geographic Information System
Jean W. Parcher
2008, Fact Sheet 2008-3069
Geographic Information Systems (GIS) and the development of extensive geodatabases have become invaluable tools for addressing a variety of contemporary societal issues and for making predictions about the future. The United States-Mexico Geographic Information System (USMX-GIS) is based on fundamental datasets that are produced and/or approved by the national geography...
Mercury Deposition Network Site Operator Training for the System Blank and Blind Audit Programs
Gregory A. Wetherbee, Christopher M.B. Lehmann
2008, Open-File Report 2008-1252
The U.S. Geological Survey operates the external quality assurance project for the National Atmospheric Deposition Program/Mercury Deposition Network. The project includes the system blank and blind audit programs for assessment of total mercury concentration data quality for wet-deposition samples. This presentation was prepared to train new site operators and to...
Three-Dimensional Geologic Map of the Hayward Fault Zone, San Francisco Bay Region, California
G. A. Phelps, R. W. Graymer, R.C. Jachens, D. A. Ponce, R.W. Simpson, C. M. Wentworth
2008, Scientific Investigations Map 3045
A three-dimensional (3D) geologic map of the Hayward Fault zone was created by integrating the results from geologic mapping, potential field geophysics, and seismology investigations. The map volume is 100 km long, 20 km wide, and extends to a depth of 12 km below sea level. The map volume is...
StreamStats: A water resources web application
Kernell G. Ries III, John D. Guthrie, Alan H. Rea, Peter A. Steeves, David W. Stewart
2008, Fact Sheet 2008-3067
Streamflow statistics, such as the 1-percent flood, the mean flow, and the 7-day 10-year low flow, are used by engineers, land managers, biologists, and many others to help guide decisions in their everyday work. For example, estimates of the 1-percent flood (the flow that is exceeded, on average, once in...
Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee through eastern Kentucky, to Mingo County, West Virginia
Robert T. Ryder, Robert D. Crangle Jr., John E. Repetski, Anita G. Harris
2008, Scientific Investigations Map 2994
Cross section H-H' is the seventh in a series of restored cross sections constructed by the lead author to show the stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian basin from Pennsylvania to Tennessee. The sections show complexly intertongued carbonate and siliciclastic lithofacies, marked thickness variations, key marker...
Assessment of Moderate- and High-Temperature Geothermal Resources of the United States
Colin F. Williams, Marshall J. Reed, Robert H. Mariner, Jacob DeAngelo, S. Peter Galanis
2008, Fact Sheet 2008-3082
Scientists with the U.S. Geological Survey (USGS) recently completed an assessment of our Nation's geothermal resources. Geothermal power plants are currently operating in six states: Alaska, California, Hawaii, Idaho, Nevada, and Utah. The assessment indicates that the electric power generation potential from identified geothermal systems is 9,057 Megawatts-electric (MWe), distributed...
