A manual of modified analytical procedures for conventional rock analysis
Herbert Kirschenbaum
1981, Open-File Report 81-359
This manual was written to establish the most accurate analytical methodology for determining the major constituents in silicate rocks. This report describes modified classical procedures for determining the amount of SiO2, Al2O3, Fe2O3, FeO, CaO, MgO, H2O-, H2O+, TiO2, P2O5, MnO, CO2, and S in silicate rocks. In the determination...
Sediment transport and effective discharge of the North Platte, South Platte, and Platte Rivers in Nebraska
J. E. Kircher
1981, Open-File Report 81-53
Sediment discharge was computed for four locations along the North Platte, South Platte, and the Platte Rivers between North Platte and Grand Island, Nebraska in order to determine the effective discharge. The total-sediment discharge was computed by the Colby method and modified Einstein method so that comparisons could be made...
Effect of snowmelt on the quality of Filson Creek and Omaday Lake, northeastern Minnesota
Donald I. Siegel, L. E. Anderson, J. A. Rogalla
1981, Water-Resources Investigations Report 81-66
Concentrations of major constituents were determined in the surface water, ground water, and precipitation in Filson Creek watershed to evaluate the effects of acid precipitation on surface-water quality during snowmelt. Concentrations of sulfate increased in Filson Creek and Omaday Lake during snowmelt from less than 2 to 12 milligrams per...
Bed form distribution and inferred sand transport on Georges Bank
David C. Twichell
1981, Open-File Report 81-764
Four bed-form provinces have been identified on Georges Bank using sidescan sonar and echo-sounding techniques: large sand waves, small sand waves, megaripples, and featureless sea floor. The large sand waves are found on the bank crest where the surface tidal currents are strongest, and are bordered, north and south, by...
Modeling the cumulative onshore effects of offshore oil and gas development
E.T. Smith, L.G. Hecht
1981, Open-File Report 81-317
Assessment of impacts of proposed coal-resource and related economic development on water resources, Yampa River basin, Colorado and Wyoming: A summary
Timothy Doak Steele, Donald E. Hillier
1981, Circular 839
Expanded mining and use of coal resources in the Rocky Mountain region of the western United States will have substantial impacts on water resources, environmental amenities, and social and economic conditions. The U.S. Geological Survey has completed a 3-year assessment of the Yampa River basin, Colorado and Wyoming, where increased...
Reconnaissance of the Hot Springs Mountains and adjacent areas, Churchill County, Nevada
Nickolas E. Voegtly
1981, Open-File Report 81-134
A geologic reconnaissance of the Hot Springs Mountains and adjacent areas, which include parts of the Brady-Hazen and the Stillwater-Soda Lake Known Geothermal Resource Areas, during June-December 1975, resulted in a reinterpretation of the nature and location of some Basin and Range faults. In addition, the late Cenozoic stratigraphy has...
Dissolution of sphalerite in ferric chloride solution
Huai Su
1981, Open-File Report 81-609
The dissolution of sphalerite in acidic ferric chloride solution of polished flat surfaces and of spherical particle surface was investigated. Tests were conducted on sphalerite to study rate of dissolution by the effects of stirring speed, temperature, ferric and ferrous concentrations, purity, and particle size.Kinetic investigations were conducted in a...
Modes of occurrence of trace elements in coal
Robert B. Finkelman
1981, Open-File Report 81-99
Model of the ground-water flow system of the Gordo and Eutaw aquifers in west-central Alabama
Richard Alfred Gardner
1981, Open-File Report 80-422
Hydrologic conditions for a two-aquifer system consisting of the Gordo and Eutaw aquifers of Cretaceous age in west-central Alabama were simulated using a three-dimensional finite difference digital model. The model was calibrated to observed heads in the aquifers using a least squares method for obtaining the values for hydraulic parameters...
Geophysical profile data processing programs for the Hewlett Packard model 2647A graphics terminal
Hamdy Sadek, Vincent J. Flanigan, George Kakatsakis
1981, Open-File Report 81-447
Hydrologic data for urban storm runoff from nine sites in the Denver metropolitan area, Colorado
Johnnie W. Gibbs
1981, Open-File Report 81-682
Urban storm-runoff data were collected April through September 1980, from nine urbanrunoff sites in the Denver metropolitan area, and are presented in this report. The sites consist of two single-family residential areas, two multi-family residential areas, one commercial area (shopping center), one mixed commercial and multi-family residential area, one native...
Geochemistry of spring water, southeastern Uinta Basin, Utah and Colorado
Briant A. Kimball
1981, Water Supply Paper 2074
The chemical quality of water in the southeastern Uinta Basin, Utah and Colorado, is important to the future development of the abundant oil-shale resources of the area. This report examines the observed changes in chemistry as water circulates in both shallow and deep ground-water systems. Mass-balance and mass- transfer calculations...
Erosion and sedimentation in the Kenai River, Alaska
Kevin M. Scott
1981, Open-File Report 81-219
The Kenai River system is the most important freshwater fishery in Alaska. The flow regime is characterized by high summer flow of glacial meltwater and periodic flooding caused by sudden releases of glacier-dammed lakes in the headwaters. Throughout most of its 50-mile course across the Kenai Peninsula Lowlands to Cook...
Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic Allochthon, southwestern Massachusetts and adjacent Connecticut and New York
E-an Zen
1981, Professional Paper 1113
The mineral assemblages from metamorphosed slightly calcic pelitic rocks of the Taconic Range in southwestern Massachusetts and adjacent areas of Connecticut and New York were studied petrographically and chemically. These rocks vary in metamorphic grade from those below the chloritoid zone through the chloritoid and garnet zones into the kyanite-staurolite...
Pattern-recognition program modified and applied to southeastern United States seismicity
Meridee Jones-Cecil, Russell L. Wheeler, James W. Dewey
1981, Open-File Report 81-195
The pattern-recognition technique of Bongard and others (1966), Gelfand and others (1976), and Briggs and others (1977) was modified and applied in Southeastern United States to try to detect combinations or interactions of geologic, geophysical, and topographic parameters characteristic of areas with moderate and large earthquakes. The modification involved replacing...
A finite-element model study of the impact of the proposed I-326 crossing on flood stages of the Congaree River near Columbia, South Carolina
J. K. Lee, C. S. Bennett III
1981, Open-File Report 81-1194
A two-dimensional finite element surface water model was used to study the hydraulic impact of the proposed Interstate Route 326 crossing of the Congaree River near Columbia, SC. The finite element model was assessed as a potential operational tool for analyzing complex highway crossings and other modifications of river flood...
Deepwell monitoring of strain-sensitive parameters over the greater Southern California uplift
Thomas L. Henyey, Ta-liang Teng, Douglas E. Hammond, C.G. Sammis
1981, Open-File Report 81-881
Several wells and springs near active faults in southern California have been monitored for the concentration of Rn, Na+ , K+ , Mg+2 , and Cl- for periods of up to 24 months, in an effort to see if any of these constituents show variations which may be related to...
The U.S. Geological Survey Coal Hydrology Program and the potential of hydrologic models for impact assessments
W. Harry Doyle
1981, Open-File Report 81-542
A requirement of Public Law 95-87, the Surface Mining Control and Reclamation Act of 1977, is the understanding of the hydrology in actual and proposed surface-mined areas. Surface-water data for small specific-sites and for larger areas such as adjacent and general areas are needed also to satisfy the hydrologic requirements...
Eastern Gulf of Alaska seismicity: Annual report to the National Oceanic and Atmospheric Administration for April 1, 1980, through March 31, 1981
Christopher D. Stephens, John C. Lahr, John A. Rogers
1981, Open-File Report 81-897
The objective of this research is to collect and analyze data on earthquake activity in the northeast Gulf of Alaska (NEGOA) and adjacent onshore areas in order to develop a better regional seismotectonic model and more accurately assess the earthquake potential. This information is critical to the establishment of criteria...
State-discharge relations at dams on the Illinois and Des Plaines rivers in Illinois
Dean M. Mades
1981, Open-File Report 81-1009
Stage-discharge relations were developed for the Brandon Road Dam on the Des Plaines River and the Dresden Island, Marseilles, Starved Rock, Peoria, and La Grange Dams on the Illinois River. A t Brandon Road Dam, streamflow is regulated by the operation of tainter gates and headgates. Tainter gates are operated...
Composition of tidal flat sediments, Willapa Bay, Washington
Gary W. Hill, John L. Chinn
1981, Open-File Report 81-272
The purpose of this study was to characterize the modern sediments of sandy tidal flats in Willapa Bay, Washington based on their composition.Generally, clay comprises less than five percent of the sediment. Clay content increases upslope and up-estuary. Principal clay minerals are montmorillanite, illite, and chlorite; two clay mineral suites...
Geohydrology and numerical simulation of the alluvium and terrace aquifer along the Beaver-North Canadian River from the Panhandle to Canton Lake, northwestern Oklahoma
Robert E. Davis, Scott C. Christenson
1981, Open-File Report 81-483
A quantitative description of the hydrologic system in alluvium and terrace deposits along the Beaver-North Canadian River in northwestern Oklahoma is needed as an aid for planning and management of the aquifer. A two-dimensional finite-difference model was used to describe the aquifer and to predict the effects of future ground-water...
Ground-water resources of the White River basin, Madison County, Indiana
Wayne W. Lapham
1981, Water-Resources Investigations Report 81-35
The ground-water resources of the White River basin in and near Madison County, Indiana, were investigated by mapping the aquifers, estimating their hydraulic properties, determining the distribution of potentiometric head in the aquifers, and estimating some of the components of the ground-water budget from data collected in the field. This...
Rainfall-runoff modeling and preliminary regional flood characteristics of small rural watersheds in the Arkansas River basin in Colorado
Russell K. Livingston
1981, Water-Resources Investigations Report 80-112
Both recorded and synthetic rainfall-runoff and annual peak-discharge data for 17 rural watersheds were analyzed to evaluate the magnitude, frequency, and volume of floods in the plains region of the Arkansas River basin in Colorado. Flood-frequency relations from analysis of recorded data were weighted or combined with flood-frequency relations from...
