The Myszkow porphyry copper-molybdenum deposit, Poland
M.A. Chaffee, R. G. Eppinger, K. Lason, J. Slosarz, M. Podemski
1994, International Geology Review (36) 947-960
The porphyry copper-molybdenum deposit at Myszkow, south-central Poland, lies in the Cracow-Silesian orogenic belt, in the vicinity of a Paleozoic boundary between two tectonic plates. The deposit is hosted in a complex that includes early Paleozoic metasedimentary rocks intruded in the late Paleozoic by a predominantly granodioritic...
Methods for measuring discharge under ice cover
J.F. Walker
1994, Journal of Hydraulic Engineering (120) 1327-1336
Streamflow-velocity adjustment coefficients at several common vertical positions varied significantly from station to station and from measurement to measurement at some stations. The ice-cover roughness was the primary factor affecting the profiles at most stations. Several discharge-measurement procedures were developed using one-half of the data collected, and the accuracy of...
Selected water-quality data for the Toppenish Creek Basin, Yakima Indian Reservation, Washington, 1989
K. L. Payne, S. S. Sumioka
1994, Open-File Report 93-486
Atrazine, alachlor, and cyanazine in a large agricultural river system
S.P. Schottler, Steven J. Eisenreich, P. D. Capel
1994, Environmental Science & Technology (28) 1079-1089
No abstract available....
Plasma chloride and gill epithelial response of channel catfish to infection with Ichthyophthirius multifillis
M. S. Ewing, M.C. Black, V. S. Blazer, K. M. Kocan
1994, Journal of Aquatic Animal Health (6) 187-196
Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per...
Water resources data, Wisconsin, water year 1993. Volume 1. St. Lawrence River Basin
B. K. Holmstrom, P.A. Kammerer, B.R. Ellefson
1994, Water Data Report WI-93-1
No abstract available....
Climate, interseasonal storage of soil water, and the annual water balance
P. C. D. Milly
1994, Advances in Water Resources (17) 19-24
The effects of annual totals and seasonal variations of precipitation and potential evaporation on the annual water balance are explored. It is assumed that the only other factor of significance to annual water balance is a simple process of water storage, and that the relevant storage capacity is the plant-available...
Lithotectonic map and field data; reconnaissance geology of the Carolina Slate Belt and adjacent rocks from southern Virginia to central South Carolina
Terry W. Offield
1994, Open-File Report 94-420
Isotopic evidence for the source of sulfur in the Upper Freeport coal bed (west-central Pennsylvania, U.S.A.)
E.C. Spiker, B.S. Pierce, A. L. Bates, R.W. Stanton
1994, Chemical Geology (114) 115-130
Sulfur isotopic variations were used to determine the sources of sulfur in a medium-sulfur coal (???2 wt%S) that lacked marine influence, which is often cited as a major source of sulfur in coal. Variations in the amount and isotopic composition of the organic and pyritic sulfur among the coal-bed facies...
Seawater as the source of minor elements in black shales, phosphorites and other sedimentary rocks
D.Z. Piper
1994, Chemical Geology (114) 95-114
Many of the minor elements in seawater today have a concentration-depth profile similar to that of the biologically essential nutrients, NO-3 and PO3-4. They show a relative depletion in the photic zone and enrichment in the deep ocean. The difference between their surface- and deep-ocean values, normalized to the change...
Recent applications of acoustic Doppler current profilers
K. A. Oberg, David S. Mueller
1994, Conference Paper, Proceedings of the Symposium on Fundamentals and Advancements in Hydraulic Measurements and Experimentation
A Broadband acoustic Doppler current profiler (BB-ADCP) is a new instrument being used by the U.S. Geological Survey (USGS) to measure stream discharge and velocities, and bathymetry. During the 1993 Mississippi River flood, more than 160 high-flow BB-ADCP measurements were made by the USGS at eight locations between Quincy and...
Water resources data, Mississippi, water year 1993
M.L. Plunkett, F. Morris, W. T. Oakley, D.P. Turnipseed
1994, Water Data Report MS-93-1
Water resources data for the 1993 water year for Mississippi consist of records of surface water, ground water, and precipitation in the State. Specifically, it contains:(1) Discharge records for 83 streamflow-gaging stations, stage records for 19 of these gaging stations, discharge records for 107 partial-record or miscellaneous streamflow stations, including...
Hydraulics and sediment transport processes in a pool-riffle rocky mountain stream
Douglas M. Thompson
1994, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Sediment transport processes related to varying channel-bed morphology were investigated from April to November, 1993 along a 1 km pool-riffle and step-pool reach of North Saint Vrain Creek, a small mountain stream in the Northern Colorado Rocky Mountains. Three hundred sixteen 16-256 mm tracer particles placed in two separate pool-riffle-pool...
Coal Map of South America
Jean N. Weaver, Gordon H. Wood Jr.
1994, Coal Map 145
Water resources data, West Virginia, water year 1993
S.M. Ward, B.C. Taylor, M.V. Mathes
1994, Water Data Report WV-93-1
Water-resources data for the 1993 water year for West Virginia consist of records of stage, discharge, and water quality of streams; contents of reservoirs; and water levels of observations wells. This report contains discharge records for 78 streamflow-gaging stations; stage only records for 11 gaging stations; annual maximum discharge at...
Water resources data Texas, water year 1993, volume 4. Ground water
S. C. Gandara, R. E. Jones
1994, Water Data Report TX-93-4
No abstract available....
Genesis of the West Siberian Basin and its petroleum geology: A recent interpretation
J. W. Clarke
1994, International Geology Review (36) 985-996
A prominent Western specialist on the geology of the oil and gas deposits of Russia provides an interpretation of the genesis of the West Siberian basin, relying, in part, on most recent Russian studies as well as information made available in 1994 evaluating the reserves of Russia's...
Environmental geology of the Summitville mine, Colorado
John E. Gray, Mark F. Coolbaugh, Geoffrey S. Plumlee, William W. Atkinson
1994, Economic Geology (89) 2006-2014
Although altered and mineralized rocks at Summitville mine in Colorado contain minimal amount of sulfide minerals, acid mine problems existed primarily because of the pervasive alteration of the surrounding rocks, through hydrothermal process, to highly siliceous and argillized rocks that are incapable of buffering acidic waters during weathering. The problems...
Artifacts resembling budding bacteria produced in placer-gold amalgams by nitric acid leaching
J.R. Watterson
1994, Geology (22) 1131-1134
Microscopic filiform morphologies in gold which are indistinguishable from forms originally interpreted as bacterial in origin were produced in the laboratory by treating amalgams made from natural and artificial gold with hot nitric acid. Textures ranging from cobblestone to deeply crenulated to nodular...
Uranium-Series Ages of Travertines and Timing of the Last Glaciation in the Northern Yellowstone Area, Wyoming-Montana
N.C. Sturchio, K. L. Pierce, M.T. Murrell, M.L. Sorey
1994, Quaternary Research (41) 265-277
Uranium-series age determinations by mass spectrometric methods were done for travertines and associated carbonate veins related to clastic deposits of the last glaciation (Pinedale) in the northern Yellowstone area. Dramatic variations in the hydrologic head are inferred from variations in the elevation of travertine deposition with time and are consistent...
Critical and supercritical flows in two unstable, mountain rivers, Toutle river system, Washington
Andrew Simon, J. H. Hardison III
1994, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Critical and supercritical flows are generally considered to be rare occurrences in natural river channels. This paper presents data and results pertaining to the existence of measured critical and supercritical flows at gaging stations on the North Fork Toutle River (NFT) and Toutle River main stem (TR). The data set...
Model for dolomite formation in northwest Florida
C.R. Cooper, J.A. Tindall
1994, Journal of Hydrology (157) 367-391
Petrographic methods are used to examine the nature of the Floridan post-Oligocene unconformity and diagenetic responses in the associated carbonate units. The study addresses the depositional environment and the character of sediments associated with the unconformity, types and timing of diagenetic changes, and mode of dolomitization for the Suwannee Limestone...
Variations in rupture process with recurrence interval in a repeated small earthquake
J.E. Vidale, W.L. Ellsworth, A. Cole, Chris Marone
1994, Nature (368) 624-626
In theory and in laboratory experiments, friction on sliding surfaces such as rock, glass and metal increases with time since the previous episode of slip. This time dependence is a central pillar of the friction laws widely used to model earthquake phenomena. On natural faults, other properties, such as rupture...
Hydrogeologic Atlas of Aquifers in Indiana
Joseph M. Fenelon, K.E. Bobay, T. K. Greeman, M.E. Hoover, D.A. Cohen, K. K. Fowler, M.C. Woodfield, J. M. and Durbin
1994, Water-Resources Investigations Report 92-4142
Aquifers in 12 water-management basins of Indiana are identified in a series of 104 hydrogeologic sections and 12 maps that show the thickness and configuration of aquifers. The vertical distribution of water-bearing units and a generalized potentiometric profile are shown along 3,500 miles of section lines that were constructed...
Indicators of sewage contamination in sediments beneath a deep-ocean dump site off New York
Michael H. Bothner, H. Takada, I.T. Knight, R. T. Hill, B. Butman, J.W. Farrington, R.R. Colwell, J. F. Grassle
1994, Marine Environmental Research (38) 43-59
The world's largest discharge of municipal sewage sludge to surface waters of the deep sea has caused measurable changes in the concentration of sludge indicators in sea-floor sediments, in a spatial pattern which agrees with the predictions of a recent sludge deposition model. Silver, linear alkylbenzenes, coprostanol, and spores of...
