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Page 3310, results 82726 - 82750

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Not all publications have extents, not all extents are completely accurate
Sedimentation and bathymetry changes in Suisun Bay: 1867-1990
Karen Cappiella, Chris Malzone, Richard Smith, Bruce Jaffe
1999, Open-File Report 99-563
Understanding patterns of historical erosion and deposition in San Francisco Bay is crucial in managing such issues as locating deposits of sediment-associated contaminants, and the restoration of wetland areas. These problems were addressed by quantitatively examining historical hydrographic surveys. The data from five hydrographic surveys, made from 1867 to 1990,...
Magnetotelluric study of the Pahute Mesa and Oasis Valley regions, Nye County, Nevada
Clifford J. Schenkel, Thomas G. Hildenbrand, Gary L. Dixon
1999, Open-File Report 99-355
Magnetotelluric data delineate distinct layers and lateral variations above the pre-Tertiary basement. On Pahute Mesa, three resistivity layers associated with the volcanic rocks are defined: a moderately resistive surface layer, an underlying conductive layer, and a deep resistive layer. Considerable geologic information can be derived from the conductive layer which...
Digital map of changes in water levels from predevelopment to 1980 for the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Joel R. Cederstrand, Mark F. Becker
1999, Open-File Report 99-265
This report contains digital data and accompanying documentation for contours of predevelopment to 1980 water-level elevation changes for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This digital data set was created by digitizing the contours for predevelopment to 1980...
Digital map of aquifer boundary for the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Joel R. Cederstrand, Mark F. Becker
1999, Open-File Report 99-267
This report contains digital data and accompanying documentation for aquifer boundaries for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This digital data set was compiled from a digital coverage that was created for publication of paper maps in McGrath...
Digital map of predevelopment water levels for the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Joel R. Cederstrand, Mark F. Becker
1999, Open-File Report 99-264
This report contains digital data and accompanying documentation for aquifer boundaries of contours for predevelopment water-level elevations for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This digital data set was created by digitizing the contours for predevelopment water-level elevations...
Chemical data and lead isotopic compositions in stream-sediment samples from the Boulder River watershed, Jefferson County, Montana
David L. Fey, Dan M. Unruh, Stan E. Church
1999, Open-File Report 99-575
Metal-mining related wastes in the Boulder River basin study area in northern Jefferson County, Montana, have been evaluated for their environmental effects as a part of the U.S. Geological Survey Abandoned Mine Lands Project. Many mine and prospect waste dumps, and mill wastes are located in the drainage basins of...
Total Petroleum Systems of the Northwest Shelf, Australia: The Dingo-Mungaroo/Barrow and the Locker-Mungaroo/Barrow
Michele G. Bishop
1999, Open-File Report 99-50-E
The Northwest Shelf Province (U.S.G.S. #3948) of Australia contains two important hydrocarbon source-rock intervals and numerous high quality reservoir intervals. These are grouped into two petroleum systems, Dingo-Mungaroo/Barrow and Locker-Mungaroo/Barrow, where the Triassic Mungaroo Formation and the Early Cretaceous Barrow Group serve as the major reservoir rocks for the Jurassic...
Permit application and approval chronology for a small airgun survey offshore southern California, June 1999
Jonathan R. Childs, William R. Normark, Michael A. Fisher
1999, Open-File Report 99-572
Offshore geophysical surveys are subject to increased restrictions resulting from new or revised Federal legislation and increased authority of State agencies that deal with environmental issues. This report reviews the process followed by the U.S. Geological Survey to obtain necessary approvals for a marine geophysical survey conducted in June, 1999,...
Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska
Susan M. Karl, Peter J. Haeussler, Anne E. McCafferty
1999, Open-File Report 99-168
The geologic map of the Duncan Canal-Zarembo Island area is the result of a multidisciplinary investigation of an area where an airborne geophysical survey was flown in the spring of 1997. The area was chosen for the geophysical survey because of its high mineral potential, a conclusion of the Petersburg...
Improvements to the DRASTIC ground-water vulnerability mapping method
Michael G. Rupert
1999, Fact Sheet 066-99
Ground-water vulnerability maps are designed to show areas of greatest potential for ground-water contamination on the basis of hydrogeologic and anthropogenic (human) factors. The maps are developed by using computer mapping hardware and software called a geographic information system (GIS) to combine data layers such as land use, soils, and...
Digital Geologic Map of the Nevada Test Site and Vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California
Janet L. Slate, Margaret E. Berry, Peter D. Rowley, Christopher J. Fridrich, Karen S. Morgan, Jeremiah B. Workman, Owen D. Young, Gary L. Dixon, Van S. Williams, Edwin H. McKee, David A. Ponce, Thomas G. Hildenbrand, W. C. Swadley, Scott C. Lundstrom, E. Bartlett Ekren, Richard G. Warren, J. C. Cole, Robert J. Fleck, Marvin A. Lanphere, David A. Sawyer, Scott A. Minor, Daniel J. Grunwald, Randell J. Laczniak, Christopher M. Menges, James C. Yount, Angela S. Jayko
1999, Open-File Report 99-554-A
This digital geologic map of the Nevada Test Site (NTS) and vicinity, as well as its accompanying digital geophysical maps, are compiled at 1:100,000 scale. The map compilation presents new polygon (geologic map unit contacts), line (fault, fold axis, metamorphic isograd, dike, and caldera wall) and point (structural attitude) vector...
Digital data sets of depth-duration frequency of precipitation for Oklahoma
Alan Rea, Robert L. Tortorelli
1999, Open-File Report 99-463
These geospatial data sets were produced as part of a regional precipitation frequency analysis for Oklahoma. The data sets consist of surface grids of precipitation depths for seven frequencies (expressed as recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years) and 12 durations (15-, 30-, and 60-minutes; 1-,...
National coal resource assessment non-proprietary data: Location, stratigraphy, and coal quality for selected tertiary coal in the Northern Rocky Mountains and Great Plains region
Romeo M. Flores, A.M. Ochs, G. D. Stricker, M.S. Ellis, S. B. Roberts, C. W. Keighin, E.C. Murphy, V.V. Cavaroc Jr., R. C. Johnson, E.M. Wilde
1999, Open-File Report 99-376
One of the objectives of the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains region was to compile stratigraphic and coal quality-trace-element data on selected and potentially minable coal beds and zones of the Fort Union Formation (Paleocene) and equivalent formations. In order to implement this...
Hydrogeology of the unsaturated zone, North Ramp area of the Exploratory Studies Facility, Yucca Mountain, Nevada
Edward M. Kwicklis, Daniel C. Gillies
Joseph P. Rousseau, Edward M. Kwicklis, Daniel C. Gillies, editor(s)
1999, Water-Resources Investigations Report 98-4050
Yucca Mountain, in southern Nevada, is being investigated by the U.S. Department of Energy as a potential site for a repository for high-level radioactive waste. This report documents the results of surface-based geologic, pneumatic, hydrologic, and geochemical studies conducted during 1992 to 1996 by the U.S. Geological Survey in the...
Enhancement of PAHs in estuarine invertebrates by surface runoff at a decommissioned military fuel depot
A.K. Miles, N. Roster
1999, Marine Environmental Research (47) 49-60
Accumulation of polycyclic aromatic hydrocarbons (PAHs) was determined in blue mussels (Mytilus spp.) and shore crabs (Hemigrapsus sp.) at a recently closed military fuel depot in central San Francisco Bay, California. In April 1996, during a period of above average precipitation, specimens were collected at the depot, near the depot, and at...
Sobrevivendo a un tsunami: lecciones de Chile, Hawai y Japon
Brian F. Compilado por Atwater, Marco Cisternas V., Joanne Bourgeois, Walter C. Dudley, James W. Hendley II, Peter H. Stauffer
1999, Circular 1218
Este folleto contiene historias veridicas que ilustran como sobrevivir, y como no sobrevivir, a un tsunami. Esta publicacion esta dirigida a las personas que viven, trabajan o, simplemente, se divierten a lo largo de las costas que pueden ser afectadas por un tsunami. Tales costas rodean la mayor parte del...