Geometry of sorbed arsenate on ferrihydrite and crystalline FeOOH: Re-evaluation of EXAFS results and topological factors in predicting sorbate geometry, and evidence for monodentate complexes
Glenn A. Waychunas, James A. Davis, Christopher C. Fuller
1995, Geochimica et Cosmochimica Acta (59) 3655-3661
Manceau's (1995) reinterpretation of some of our EXAFS results (Waychunas et al., 1993) has been analyzed using both old and newly collected data in an attempt to clarify the nature of proposed monodentate and edge-sharing bidentate arsenate complexes on the ferrihydrite surface. It is shown that EXAFS analysis utilizing data...
A selected bibliography of water-related research in the upper Klamath Basin, Oregon
Dorie L. Brownell, Mia R. Rinallo
1995, Open-File Report 95-285
A bibliography containing 165 selected references was compiled to assist local, State, and Federal agencies that have ongoing water-related research interests in the Upper Klamath Basin. The report has two parts. Part 1 is a list of bibliographic citations alphabetized by author, and Part 2 is a subject index that...
Erosion assessment at the Petroglyph National Monument area, Albuquerque, New Mexico
A. C. Gellis
1995, Water-Resources Investigations Report 94-4205
Areas of the Petroglyph National Monument, specifically those located along the West Mesa escarpment, are being affected by erosion and gullying. A reconnaissance along the 17-mile-long escarpment identified 50 gullies. The gullies were given a qualitative ranking of Class I, least erosion, to Class IV, highest erosion. Of the 50...
Geologic overview of Clark County, Kansas
Morris W. Green, G. M. Fairer
1995, Open-File Report 95-256
Reconnaissance geologic map of the southern Sierra Nevada, Kern, Tulare, and Inyo counties, California
D. C. Ross
1995, IMAP 2295
Gross-beta activity in ground water: natural sources and artifacts of sampling and laboratory analysis
Alan H. Welch, Zoltan Szabo, David L. Parkhurst, Peter C. Van Metre, Ann H. Mullin
1995, Applied Geochemistry (10) 491-503
Gross-beta activity has been used as an indicator of beta-emitting isotopes in water since at least the early 1950s. Originally designed for detection of radioactive releases from nuclear facilities and weapons tests, analysis of gross-beta activity is widely used in studies of naturally occurring radioactivity in ground water. Analyses of...
Climatic and lake temperature data for Wetland P1, Cottonwood Lake Area, Stutsman County, North Dakota, 1982-87
Renee S. Parkhurst, A.M. Sturrock, D.O. Rosenberry, T. C. Winter
1995, Open-File Report 94-546
Research on the hydrology of Wetland P1 and the Cottonwood Lake Area includes the study of evaporation. Presented here in a graphical format are those data collected during the open-water seasons of 1982-87 that were needed for energy- budget and mass-transfer evaporation studies. The data include air temperatures, water surface...
Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska
D. A. Brew
1995, Open-File Report 95-215
No abstract available....
Pesticide, nutrient, water-discharge and physical-property data for the Mississippi River and some of its tributaries, April 1991-September 1992
Richard H. Coupe
1995, Open-File Report 93-657
No abstract available....
Estimates of roughness coefficients for selected natural stream channels with vegetated banks in New York
William F. Coon
1995, Open-File Report 93-161
Using chloride and chlorine-36 as soil-water tracers to estimate deep percolation at selected locations on the U.S. Department of Energy Hanford site, Washington
Edmund A. Prych
1995, Open-File Report 94-514
Long-term average deep-percolation rates of water from precipitation on the U.S. Department of Energy Hanford Site in semiarid south-central Washington, as estimated by a chloride mass-balance method, range from 0.008 to 0.30 mm/yr (millimeters per year) at nine locations covered by a variety of fine-grain soils and vegetated with sagebrush...
Statistical summary of selected physical, chemical, and microbial characteristics, and estimates of constituent loads in urban stormwater, Maricopa County, Arizona
T. J. Lopes, K. D. Fossum, J. V. Phillips, J. E. Monical
1995, Water-Resources Investigations Report 94-4240
Stormwater and streamflow in the Phoenix, Arizona, area were monitored to determine the physical, chemical, and microbial characteristics of storm- water from areas having different land uses; to describe the characteristics of streamflow in a river that receives urban stormwater; and to estimate constituent loads in stormwater from unmonitored areas...
Effect of the Cedar River on the quality of the ground-water supply for Cedar Rapids, Iowa
P.M. Schulmeyer
1995, Water-Resources Investigations Report 94-4211
The Surface Water Treatment Rule under the 1986 Amendment to the Safe Drinking Water Act requires that public-water supplies be evaluated for susceptibility to surface-water effects. The alluvial aquifer adjacent to the Cedar River is evaluated for biogenic material and monitored for selected water-quality properties and constituents to determine the...
Teleseismic tomography of the Loma Prieta Earthquake Region, California: Implications for strain partitioning
Y. Takauchi, John R. Evans
1995, Geophysical Research Letters (22) 2203-2206
From teleseismic travel times we derive three-dimensional velocity models of the upper 71 km in the 1989 Loma Prieta earthquake region, central California. Shallow crustal structure is consistent with local-earthquake tomography. Horizontal velocity gradients at all depths suggest that the San Andreas fault was a deep shear locus, at least...
Osmium-187 enrichment in some plumes: Evidence for core-mantle interaction?
R.J. Walker, J. W. Morgan, M.F. Horan
1995, Science (269) 819-822
Calculations with data for asteroidal cores indicate that Earth's outer core may have a rhenium/osmium ratio at least 20 percent greater than that of the chondritic upper mantle, potentially leading to an outer core with an osmium-187/osmium-188 ratio at least 8 percent greater than that of chondrites. Because of the...
High-3He plume origin and temporal-spatial evolution of the Siberian flood basalts
A. R. Basu, R.J. Poreda, P.R. Renne, F. Teichmann, Y.R. Vasiliev, N.V. Sobolev, B. D. Turrin
1995, Science (269) 822-825
An olivine nephelinite from the lower part of a thick alkalic ultrabasic and mafic sequence of volcanic rocks of the northeastern part of the Siberian flood basalt province (SFBP) yielded a 40Ar/39Ar plateau age of 253.3 ± 2.6 million years, distinctly older than the main tholeiitic pulse of the SFBP at...
Management briefs: Phototaxis of larval and juvenile northern pike
Stephen J. Zigler, Michael R. Dewey
1995, North American Journal of Fisheries Management (15) 651-653
Age-0 northern pike Esox lucius prefer vegetated habitats that are difficult to sample with standard towed gears. Light traps can be effective for sampling larval fishes in dense vegetation, given positive phototaxis offish. We evaluated the phototactic response of young northern pike by comparing the catches of larvae and juveniles obtained with...
Evaluation of proposed precipitation mechanisms for Mississippi Valley-type deposits
Charles S. Spirakis, A. V. Heyl
1995, Ore Geology Reviews (10) 1-17
The mechanism of precipitation is an important aspect of any genetic model for Mississippi Valley-type deposits. Yet most of the precipitation mechanisms for minerals in the Mississippi Valley-type association have serious flaws. Solution mixing would require an unlikely series of solutions to account for the various minerals in the ores,...
Agricultural chemicals in ground water of the midwest
D.W. Kolpin
1995, Conference Paper, Proceedings of 1995 Water and the Future of Kansas Conference
No abstract available....
The 1995 Hanshin-Awaji (Kobe), Japan, Earthquake
Thomas L. Holzer
1995, GSA Today (5) 154-153
No abstract available....
Comparison of hydrothermal alteration of carboniferous carbonate and siliclastic rocks in the Valles caldera with outcrops from the Socorro caldera, New Mexico
Augustus K. Armstrong, Jacques R. Renault, Robert L. Oscarson
1995, Journal of Volcanology and Geothermal Research (67) 207-220
Continental Scientific Drilling Program (CSDP) drill hole VC-2B [total depth 1761.7 m (5780 ft); maximum temperature 295 °C] was continuously cored through the Sulphur Springs hydrothermal system in the western ring-fracture zone of the 1.14 Ma Valles caldera. Among other units, the hole penetrated 760.2 m (2494.1 ft) of...
Effect of timber harvest on soil carbon storage at Blodgett Experimental Forest, California
T.A. Black, J.W. Harden
1995, Canadian Journal of Forest Research (25) 1385-1396
Four plots from a mixed conifer forest were similarly cleared, burned, and replanted at various times over 17 years; a plot logged 79 years before sampling was used as a control. The plots had similar slope (2 to 15%, midslope position), aspect (south to southeast), and soil type (Holland series:...
Occurrence of herbicides and metabolites in surface water, ground water, and rainwater in the midwestern United States
D. A. Goolsby, E.M. Thurman, D.W. Kolpin, William A. Battaglin
1995, Conference Paper, Proceedings of 1995 Annual Conference
No abstract available....
Evidence of hydrous differentiation and crystal accumulation in the low-MgO, high-Al2O3 Lake Basalt from Medicine Lake volcano, California
T.P. Wagner, Julie M. Donnelly-Nolan, T.L. Grove
1995, Contributions to Mineralogy and Petrology (121) 201-216
The late Pleistocene Lake Basalt of Medicine Lake volcano, California is comprised of variably porphyritic basalt and basaltic andesite flows and scoria. These eruptives are similar in composition and phenocryst abundance to the low-MgO, high-Al2O3 mafic magmas common in convergent margin settings. The petrogenesis of the magmas that produced the Lake...
Dynamic mapping of urban regions: Growth of the San Francisco/Sacramento region
Cindy Bell, William Acevedo, Janis Taylor
1995, Conference Paper, Proceedings of the 1995 Annual Urban and Regional Information Systems Association
A methodology has been developed to document the tremendous growth large metropolitan regions have experienced over time. A GIS was used to compile a database of urbanization for the San Francisco/ Sacramento urban region spanning 140 years. Historical records, USGS topographic maps, aerial photographs, and Landsat imagery were used to...
