Reply to discussion on “Tectonic controls of Mississippi Valley-type lead–zinc mineralization in orogenic forelands”
Dwight Bradley, David L. Leach, David Symons, Poul Emsbo, Wayne R. Premo, George N. Breit, D. F. Sangster
2004, Mineralium Deposita (39) 515-519
Bradley and Leach (2003) focused on the tectonics of a subset of Mississippi Valley-type (MVT) lead–zinc deposits. Age assignments followed those given in a review of MVT deposits worldwide (Leach et al. 2001)—a paper that provoked a discussion by Kesler and Carrigan (2002) and reply by Leach et al. (2002),...
Estimates of fetch-induced errors in Bowen-ratio energy-budget measurements of evapotranspiration from a prairie wetland, Cottonwood Lake Area, North Dakota, USA
David L. Stannard, Donald O. Rosenberry, Thomas C. Winter, Renee S. Parkhurst
2004, Wetlands (24) 498-513
Micrometeorological measurements of evapotranspiration (ET) often are affected to some degree by errors arising from limited fetch. A recently developed model was used to estimate fetch-induced errors in Bowen-ratio energy-budget measurements of ET made at a small wetland with fetch-to-height ratios ranging from 34 to 49....
Biogeochemical transformation of Fe minerals in a petroleum-contaminated aquifer
John M. Zachara, Ravi K. Kukkadapu, Paul L. Glassman, Alice Dohnalkova, Jim K. Fredrickson, Todd Anderson
2004, Geochimica et Cosmochimica Acta (68) 1971-1805
The Bemidji aquifer in Minnesota, USA is a well-studied site of subsurface petroleum contamination. The site contains an anoxic groundwater plume where soluble petroleum constituents serve as an energy source for a region of methanogenesis near the source and bacterial Fe(III) reduction further down gradient. Methanogenesis apparently begins when...
Mars: Water, water everywhere
Timothy N. Titus
2004, Nature (428) 610-611
Mars is a very watery planet, but all the water seems to be frozen. Divining the amount and distribution of this water, past and present, is essential for understanding martian climates, and more....
Coping with mist-net capture-rate bias: Canopy height and several extrinsic factors
Elizabeth P. Mallory, Nicholas V. L. Brokaw, Steven C. Hess
2004, Studies in Avian Biology (29) 151-160
Many factors other than a species' actual abundance can affect mist-net capture rates. We used ANCOVA models to quantify some potential biases and control their effects, producing adjusted estimates of capture rates that are more directly comparable among mist-net stations. Data came from 46 two-day mist-net sessions from September 1990...
A new coccidian parasite, Isospora samoaensis, from the Wattled Honeyeater (Foulehaio carunculata) from American Samoa
Kelly J. Adamczyk, Thomas E. McQuistion, Dennis LaPointe
2004, Acta Protozoologica (43) 179-181
A new species of Isospora is described from the feces of the wattled honeyeater, Foulehaio carunculata from American Samoa. Numerous oocysts of similar morphology were found in a single adult wattled honeyeater. Sporulated oocysts are ovoid, 28.9 × 26.1 (25-32 × 23-30) µm, with a smooth, colorless, bilayered wall; the...
Transferability of tubifex limiting factor models
James W. Terrell, Robert T. Milhous
2004, Conference Paper, Proceedings 10th annual Whirling Disease Symposium: "Whirling disease management: practicalities and realities": Grand American Hotel, Savory Salon, Salt Lake City, Utah, March 2-3, 2004
Dense populations of T. tubifex are generally associated with habitats dominated by fine sediments and enriched organic material (e.g. Krueger, 2002). Management of whirling disease positive systems is entering a new phase where channel modifications are being implemented to reduce or isolate this type of habitat. These management...
Do pharmaceuticals, pathogens, and other organic waste water compounds persist when waste water is used for recharge?
Gail E. Cordy, Norma L. Duran, Herman Bouwer, Robert C. Rice, Edward T. Furlong, Steven D. Zaugg, Michael T. Meyer, Larry B. Barber, Dana W. Kolpin
2004, Ground Water Monitoring and Remediation (24) 58-69
A proof-of-concept experiment was devised to determine if pharmaceuticals and other organic waste water compounds (OWCs), as well as pathogens, found in treated effluent could be transported through a 2.4 m soil column and, thus, potentially reach ground water under recharge conditions similar to those in arid or semiarid climates....
Changes in ground-water quality near two granular-iron permeable reactive barriers in a sand and gravel aquifer, Cape Cod, Massachusetts, 1997-2000
Jennifer G. Savoie, Douglas B. Kent, Richard L. Smith, Denis R. LeBlanc, David W. Hubble
2004, Water-Resources Investigations Report 2003-4309
Two experimental permeable reactive barriers (PRBs) of granular zero-valent iron were emplaced in the path of a tetrachloroethene plume (the Chemical Spill-10 plume) at the Massachusetts Military Reservation, Cape Cod, Massachusetts, in June 1998. The goal of the field experiment was to achieve emplacement of a granular-iron PRB deeper than...
Great Basin Paleozoic carbonate platform: Facies, facies transitions, depositional models, platform architecture, sequence stratigraphy, and predictive mineral host model
Harry E. Cook, James J. Corboy
2004, Open-File Report 2004-1078
No abstract available....
Sources and Transport of Nutrients, Organic Carbon, and Chlorophyll-a in the San Joaquin River Upstream of Vernalis, California, during Summer and Fall, 2000 and 2001
Charles R. Kratzer, Peter D. Dileanis, Celia Zamora, Steven R. Silva, Carol Kendall, Brian A. Bergamaschi, Randy A. Dahlgren
2004, Water-Resources Investigations Report 2003-4127
Oxidizable materials from the San Joaquin River upstream of Vernalis can contribute to low dissolved oxygen episodes in the Stockton Deep Water Ship Channel that can inhibit salmon migration in the fall. The U.S. Geological Survey collected and analyzed samples at four San Joaquin River sites in July through October...
Assessment of Hazards Associated with the Bluegill Landslide, South-Central Idaho
William L. Ellis, Robert L. Schuster, William H. Schulz
2004, Open-File Report 2004-1054
The Bluegill landslide, located in south-central Idaho, is part of a larger landslide complex that forms an area the Salmon Falls Creek drainage named Sinking Canyon Recent movement of the Bluegill landslide, apparently beginning sometime in late 1998 or early 1999, has caused a 4.5 ha area of the canyon...
Estimates of hydraulic properties from a one-dimensional numerical model of vertical aquifer-system deformation, Lorenzi site, Las Vegas, Nevada
Michael T. Pavelko
2004, Water-Resources Investigations Report 2003-4083
Land subsidence related to aquifer-system compaction and ground-water withdrawals has been occurring in Las Vegas Valley, Nevada, since the 1930's, and by the late 1980's some areas in the valley had subsided more than 5 feet. Since the late 1980's, seasonal artificial-recharge programs have lessened the effects of summertime pumping...
Reconnaissance of Surface-Water Quality and Possible Sources of Nutrients and Bacteria in the Turkey Creek Watershed, Northwest Oklahoma, 2002-2003
Carol Becker
2004, Scientific Investigations Report 2004-5039
The U.S. Geological Survey in cooperation with the Oklahoma Department of Environmental Quality and the U.S. Environmental Protection Agency investigated the distribution of surface-water quality and possible sources of nutrients and Escherichia coli bacteria to surface water in Turkey Creek, which flows about 70 miles through mostly rural agricultural areas...
The characteristics and interpretability of land surface change and implications for project design
Terry L. Sohl, Alisa L. Gallant, Thomas R. Loveland
2004, Photogrammetric Engineering and Remote Sensing (70) 439-448
The need for comprehensive, accurate information on land-cover change has never been greater. While remotely sensed imagery affords the opportunity to provide information on land-cover change over large geographic expanses at a relatively low cost, the characteristics of land-surface change bring into question the suitability of many commonly used methodologies....
Simulated Water-Management Alternatives Using the Modular Modeling System for the Methow River Basin, Washington
Christopher P. Konrad
2004, Open-File Report 2004-1051
A precipitation-runoff model for the Methow River Basin was used to simulate six alternatives: (1) baseline of current flow, (2) line irrigation canals to limit seepage losses, (3) increase surface-water diversions through unlined canals for aquifer recharge, (4) convert from surface-water to ground-water resources to supply water for irrigation, and...
Pesticides in the Lower Clackamas River Basin, Oregon, 2000-01
Kurt D. Carpenter
2004, Water-Resources Investigations Report 2003-4145
In 2000-01, the U. S. Geological Survey sampled the Clackamas River and its major lower-basin tributaries during storm runoff conditions for 86 dissolved pesticides and selected breakdown products. Twenty-seven compounds, including 18 herbicides, 7 insecticides, and 2 pesticide breakdown products, were detected in 18 stream samples. The most commonly detected...
The value of long-term monitoring in the development of ground-water-flow models
Daniel T. Feinstein, David J. Hart, James T. Krohelski
2004, Fact Sheet 116-03
As environmental issues have come to the forefront of public concern, so has the awareness of the importance of ground water in the overall water cycle and as a source of the Nation’s drinking water. Heightened interest has spawned a host of scientific enterprises (Taylor and Alley, 2001). Some...
Characteristics of and Areas Contributing Recharge to Public-Supply Springs in Massachusetts
Bruce P. Hansen, Kirk P. Smith
2004, Water-Resources Investigations Report 2003-4266
The geohydrologic and physical characteristics were determined for 28 public-supply springs, 27 of which are in western Massachusetts. Discharge ranged from zero at various small intermittent springs to more than 240 gallons per minute at Waubeeka Springs in Williamstown, Massachusetts. To determine the annual variability of spring discharge, discharge from...
Secondary Mineral Deposits and Evidence of Past Seismicity and Heating of the Proposed Repository Horizon at Yucca Mountain, Nevada
Josheph F. Whelan
2004, Water-Resources Investigations Report 2003-4321
The Drift Degradation Analysis (DDA) (BSC, 2003) for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada, describes model simulations of the effects of pre- and post-closure seismicity and waste-induced heating on emplacement drifts. Based on probabilistic seismic hazard analyses of the intensity and frequency of future seismic events...
Assessment of undiscovered oil and gas resources of the Wyoming Thrust Belt Province, 2003
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 2004-3025
Assessment of undiscovered oil and gas resources of the Bend Arch-Fort Worth Basin Province of north-central Texas and southwestern Oklahoma, 2003
Water Resources Division, U.S. Geological Survey
2004, Fact Sheet 2004-3022
No abstract available....
Geology of the National Capital Region: Field trip guidebook
William Burton, Scott Southworth
2004, Circular 1264
The 2004 Joint Northeast-Southeast Section Meeting of the Geological Society of America is the fourth such meeting and the third to be held in or near Washington, D.C. This guidebook and the field trips presented herein are intended to provide meeting participants, as well as other interested readers, a means...
1998 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
Robert G. McGimsey, Christina A. Neal, Olga Girina
2004, Open-File Report 2003-423
No abstract available....
Habitat of endangered white abalone, Haliotis sorenseni
Kevin D. Lafferty, M.D. Behrens, G.E. Davis, P.L. Haaker, D.J. Kushner, D. V. Richards, I. K. Taniguchi, M. J. Tegner
2004, Biological Conservation (116) 191-194
Surveys with a submersible at offshore islands and banks in southern California found that white abalone were most abundant at depths between 43 and 60 m. This is deeper than estimates taken when white abalone were more abundant. Densities were highest at sites far from fishing ports. Controlling for depth...
