Analysis of magnetotelluric profile data from the Ruby Mountains metamorphic core complex and southern Carlin Trend region, Nevada
Philip E. Wannamaker, William M. Doerner, John A. Stodt, Timothy L. Sodergen, Brian D. Rodriguez
2002, Open-File Report 2002-214
We have collected about 150 magnetotelluric (MT) soundings in northeastern Nevada in the region of the Ruby Mountains metamorphic core complex uplift and southern Carlin mineral trend, in an effort to illuminate controls on core complex evolution and deposition of world-class gold deposits. The region has experienced a broad range...
Merged digital aeromagnetic data for the middle Rio Grande and southern Espanola basins, New Mexico
Ronald E. Sweeney, V. J. S. Grauch, Jeffrey D. Phillips
2002, Open-File Report 2002-205
The U. S. Geological Survey (USGS) recently conducted a multi-disciplinary study of the Middle Rio Grande basin (Bartolino and Cole, 2002; Fig. 1). The main purpose of this study was to gain a better multi-dimensional understanding of the basin's hydrogeologic framework and use this new understanding to construct an improved...
Ground-water resources of the uppermost confined aquifers, southern Wadena County and parts of Ottertail, Todd, and Cass Counties, central Minnesota, 1997–2000
R. J. Lindgren
2002, Water-Resources Investigations Report 2002-4023
Water managers are concerned about the increase of ground-water withdrawals from high-capacity wells completed in the uppermost confined aquifers in southern Wadena County. The hydrogeologic units of primary interest in the study area are the surficial aquifer, the uppermost confining units, and the uppermost confined aquifers. The surficial aquifer underlies...
Toxic substances from coal combustion - A comprehensive assessment, phase II: Element modes of occurrence for the Ohio 5/6/7, Wyodak, and North Dakota coal samples
Allan Kolker, Stanley J. Mroczkowski, Curtis A. Palmer, Kristen O. Dennen, Robert B. Finkelman, John H. Bullock Jr.
2002, Open-File Report 2002-224
No abstract available....
Geologic and isostatic gravity map of the Nenana basin area, central Alaska
G. M. Frost, D.F. Barnes, R. G. Stanley
2002, IMAP 2543
The Nenana Basin area is a prospective petroleum province in central Alaska, and this geologic and isostatic gravity map is part of a petroleum resource assessment of the area.The geology was compiled from published sources as shown on the index map (map sheet). Map units are organized and presented according...
Historic and unregulated monthly streamflow for selected sites in the Red River of the North Basin in North Dakota, Minnesota, and South Dakota, 1931-99
Douglas G. Emerson, Valerie M. Dressler
2002, Water-Resources Investigations Report 2002-4095
Operation of the Garrison Diversion Unit in North Dakota may have various effects on the quantity and quality of streamflow in the Sheyenne River and the Red River of the North. To model the effects that the Garrison Diversion Unit could have on water quality, gaged and estimated historic streamflow...
Evapotranspiration from selected fallowed agricultural fields on the Tule Lake National Wildlife Refuge, California, during May to October 2000
W. R. Bidlake
2002, Water-Resources Investigations Report 2002-4055
An investigation of evapotranspiration, vegetation quantity and composition, and depth to the water table below the land surface was made at three sites in two fallowed agricultural lots on the 15,800-hectare Tule Lake National Wildlife Refuge in northern California during the 2000 growing season. All three sites had been farmed...
Simulation of streamflow and wetland storage, Starkweather Coulee subbasin, North Dakota, water years 1981-98
Kevin C. Vining
2002, Water-Resources Investigations Report 2002-4113
A study was conducted to simulate streamflow and wetland storage within a part of the Starkweather Coulee subbasin. Information on streamflow and wetland storage in Starkweather Coulee subbasin may help with the management of water issues in the Devils Lake Basin. Information from a digital elevation model and geographic-information-system analyses...
Rainfall-runoff characteristics and effects of increased urban density on streamflow and infiltration in the eastern part of the San Jacinto River basin, Riverside County, California
Joel R. Guay
2002, Water-Resources Investigations Report 2002-4090
To better understand the rainfall-runoff characteristics of the eastern part of the San Jacinto River Basin and to estimate the effects of increased urbanization on streamflow, channel infiltration, and land-surface infiltration, a long-term (1950?98) time series of monthly flows in and out of the channels and land surfaces were simulated...
Federally owned coal and Federal lands in the Northern and Central Appalachian Basin coal regions
S.J. Tewalt
2002, Fact Sheet 013-02
The U.S. Geological Survey (USGS) assessed five coal beds or coal zones in the northern and central Appalachian Basin coal regions for the National Coal Resource Assessment: the Pittsburgh coal bed, the Upper Freeport coal bed, the Fire Clay coal zone, the Pond Creek coal zone, and the Pocahontas No....
Reassessment of ground-water recharge and simulated ground-water availability for the Hawi area of North Kohala, Hawaii
Delwyn S. Oki
2002, Water-Resources Investigations Report 2002-4006
An estimate of ground-water availability in the Hawi area of north Kohala, Hawaii, is needed to determine whether ground-water resources are adequate to meet future demand within the area and other areas to the south. For the Hawi area, estimated average annual recharge from infiltration of rainfall, fog drip, and...
Monitoring dust storms and mapping landscape vulnerability to wind erosion using satellite and ground-based digital images
Pat S. Chavez Jr., David MacKinnon, Richard L. Reynolds, Miguel G. Velasco
2002, Arid Lands Newsletter
Wind-induced dust emission in the southwestern United States is important regionally because of its impact on human health and safety and its influence on ecosystem dynamics. Factors that control dust emission include wind velocity, sediment availability, and surface conditions (e.g., vegetation type and degree of cover, surface crusts and armoring,...
Evaluation of a local grid refinement method for steady-state block-centered finite-difference groundwater models
Mary C. Hill, Steffen W. Mehl
2002, Developments in Water Science (47) 367-374
A new method of local grid refinement for two-dimensional block-centered finite difference meshes that uses an iteration-based feedback to couple two separate grids has been developed. Its convergence properties have been evaluated and comparisons with alternative methods have been completed (Mehl and Hill, in review a). This work further investigates a...
Geographic information systems compilation of geophysical, geologic, and tectonic data for the Bering Shelf, Chukchi Sea, Arctic margin, and adjacent landmasses
Simon L. Klemperer, Mark L. Greninger, Warren J. Nokleberg
2002, GSA Special Papers (360) 359-374
The accompanying CD-ROM contains a compilation of geophysical, geologic, and tectonic data for the Bering Shelf, the Chukchi Sea, the Arctic margin, and adjacent landmasses. These data sets focus on Alaska, the Russian Far East, and the continental shelves that link these two landmasses. For compatibility with other available geographic...
Interactions between onshore bedrock-channel incision and nearshore wave-base erosion forced by eustasy and tectonics
N.P. Snyder, K.X. Whipple, G.E. Tucker, D.J. Merritts
2002, Basin Research (14) 105-127
We explore the response of bedrock streams to eustatic and tectonically induced fluctuations in base level. A numerical model coupling onshore fluvial erosion with offshore wave‐base erosion is developed. The results of a series of simulations for simple transgressions with constant rate of sea‐level change (SLR) show that response depends on...
Evaporite tectonism in the lower Roaring Fork River valley, west-central Colorado
R. M. Kirkham, Randall K. Streufert, Michael J. Kunk, James R. Budahn, Mark R. Hudson, William J. Perry Jr.
2002, GSA Special Papers (366) 73-99
Evaporite tectonism in the lower Roaring Fork River valley in west-central Colorado has caused regional subsidence of a differentially downdropped area in the southern part of the Carbondale collapse center during the late Cenozoic. A prominent topographic depression coincides with this collapse area, and drainage patterns within the collapse area...
User's guide to HYPOINVERSE-2000, a Fortran program to solve for earthquake locations and magnitudes
Fred W. Klein
2002, Open-File Report 2002-171
Hypoinverse is a computer program that processes files of seismic station data for an earthquake (like p wave arrival times and seismogram amplitudes and durations) into earthquake locations and magnitudes. It is one of a long line of similar USGS programs including HYPOLAYR (Eaton, 1969), HYPO71 (Lee and Lahr, 1972),...
Estimates of ground-water recharge from precipitation to glacial-deposit and bedrock aquifers on Lopez, San Juan, Orcas, and Shaw islands, San Juan County, Washington
Laura A. Orr, Henry H. Bauer, Judith A. Wayenberg
2002, Water-Resources Investigations Report 2002-4114
An important source of fresh water on Lopez, San Juan, Orcas, and Shaw Islands in San Juan County off the northwestern coast of Washington is glacial-deposit and bedrock aquifers. Two methods were used to estimate recharge from precipitation to the water tables on the islands. A daily near-surface water-balance method,...
Abstracts of the annual Planetary Geologic Mappers Meeting, June 18-19, 2001, Albuquerque, New Mexico
Kenneth L. Tanaka, David A. Senske
Thomas J. Parker, editor(s)
2002, Open-File Report 2002-78
The annual Planetary Geologic Mappers Meeting serves two purposes. In addition to giving mappers the opportunity to exchange ideas, experiences, victories, and problems with others, presentations are reviewed by the Geologic Mapping Subcommittee (GeMS) to provide input to the Planetary Geology and Geophysics Mapping Program review panel’s consideration of new...
Progress on geoenvironmental models for selected mineral deposit types
Robert R. Seal, II, Nora K. Foley, editor(s)
2002, Open-File Report 2002-195
Since the beginning of economic geology as a subdiscipline of the geological sciences, economic geologists have tended to classify mineral deposits on the basis of geological, mineralogical, and geochemical criteria, in efforts to systematize our understanding of mineral deposits as an aid to exploration. These efforts have led to classifications...
Geohydrology, water quality, and simulation of ground-water flow in the vicinity of a former waste-oil refinery near Westville, Indiana, 1997–2000
Richard F. Duwelius, Douglas J. Yeskis, John T. Wilson, Bret A. Robinson
2002, Water-Resources Investigations Report 2001-4221
Geohydrologic and water-quality data collected during 1997 through 2000 in the vicinity of a former waste-oil refinery near Westville, Indiana, define a plume of 1,4-dioxane in ground water that extends to the southwest approximately 0.8 miles from the refinery site. Concentrations of 1,4-dioxane in the plume ranged from 3 to...
Borehole velocity measurements at five sites that recorded the Cape Mendocino, California earthquake of 25 April, 1992
James F. Gibbs, John C. Tinsley III, David M. Boore
2002, Open-File Report 2002-203
The U.S. Geological Survey (USGS), as part of an ongoing program to acquire seismic velocity and geologic data at locations that recorded strong-ground motions during earthquakes, has investigated five sites in the Fortuna, California region (Figure 1). We selected drill sites at strong-motion stations that recorded high accelerations (Table 1)...
Characterization and modes of occurrence of elements in feed coal and fly ash; an integrated approach
Michael E. Brownfield
2002, Fact Sheet 038-02
Despite certain environmental concerns, coal is likely to remain an important component of the United States energy supply, partly because it is the most abundant domestically available fossil fuel. One of the concerns about coal combustion for electricity production is the potential release of elements from coal and coal combustion...
Geologic map of MTM -40252 and -40257 quadrangles, Reull Vallis region of Mars
Scott C. Mest, David A. Crown
2002, IMAP 2730
Mars Transverse Mercator (MTM) quadrangles -40252 and -40257 cover a portion of the highlands of Promethei Terra northeast of the Hellas basin. The map area consists of heavily cratered ancient highland materials of moderate to high relief, isolated knobs and massifs of rugged mountainous materials, extensive tracts of smooth and...
Natural attenuation of chlorinated volatile organic compounds in ground water at Operable Unit 1, Naval Undersea Warfare Center, Division Keyport, Washington
Richard S. Dinicola, S.E. Cox, J. E. Landmeyer, P. M. Bradley
2002, Water-Resources Investigations Report 2002-4119
The U.S. Geological Survey (USGS) evaluated the natural attenuation of chlorinated volatile organic compounds (CVOCs) in ground water beneath the former landfill at Operable Unit 1 (OU 1), Naval Undersea Warfare Center, Division Keyport, Washington. The predominant contaminants in ground water are trichloroethene (TCE) and its degradation byproducts cis-1,2-dichloroethene (cisDCE)...
