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Page 4835, results 120851 - 120875

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Archaeology and public perception of a trans-scientific problem; disposal of toxic wastes in the unsaturated zone
Isaac Judah Winograd
1986, Circular 990
Predicting the effects of toxic-waste disposal on the environment over periods of millenia to hundreds of millenia is a transscientific problem; that is, one not fully addressed by quantitative scientific and engineering endeavors. Archaeology is a pertinent adjunct to such predictions in several ways. First, and foremost, archaeological records demonstrate...
Influence of size-fractioning techniques on concentrations of selected trace metals in bottom materials from two streams in northeastern Ohio
G. F. Koltun, Dennis R. Helsel
1986, Water-Resources Investigations Report 86-4114
Identical stream-bottom material samples, when fractioned to the same size by different techniques, may contain significantly different trace-metal concentrations. Precision of techniques also may differ, which could affect the ability to discriminate between size-fractioned bottom-material samples having different metal concentrations. Bottom-material samples fractioned to less than 0.020 millimeters by means...
Evaluation of coal-mining impacts using numerical classification of benthic invertebrate data from streams draining a heavily mined basin in eastern Tennessee
A.D. Bradfield
1986, Water-Resources Investigations Report 85-4289
Coal-mining impacts on Smoky Creek, eastern Tennessee were evaluated using water quality and benthic invertebrate data. Data from mined sites were also compared with water quality and invertebrate fauna found at Crabapple Branch, an undisturbed stream in a nearby basin. Although differences in water quality constituent concentrations and physical habitat...
Measurement of scour-depth near bridge piers
J. V. Skinner
1986, Water-Resources Investigations Report 85-4106
River-bed scour is a major source of damage to bridge piers and bridge abutments. When scour depth exceeds design limits, the supporting material around the footings is washed away and the structure becomes unstable. Equations for predicting scour-depth show a significant lack of agreement so portable equipment for measuring scour...
Water resources activities in Illinois, 1985
M. L. Garrelts
1986, Open-File Report 86-130
This report gives an overview of U.S. Geological Survey, Illinois District, Water Resources Division activities related to the water resources of the State of Illinois. The report includes sections describing District organization, programs, water conditions, data collection activities, and project summaries. Also included is a complete listing of District and...
Geochemistry and petrology of basaltic rocks from the Marshall Islands
Alice S. Davis, William C. Schwab, Janet A. Haggerty
1986, Open-File Report 86-273
A variety of volcanic rock was recovered from the flanks of seamounts, guyots, atolls, and islands in the Ratak chain of the Marshall Islands on the U.S. Geological Survey cruise L9-84-CP. The main objective of this cruise was to study the distribution and composition of ferromanganese oxide crusts. Preliminary results...
Geologic map of southern Prince of Wales Island, southeastern Alaska
George E. Gehrels, Jason B. Saleeby
1986, Open-File Report 86-275
Southern Prince of Wales Island is underlain by stratified, intrusive, and metamorphic rocks of Cretaceous through pre-Middle Ordovician age and by surficial deposits. The region was mapped originally in reconnaissance fashion by Buddington and Chapin (1929) and subsequently by W.H. Condon and I.L. Tailleur (unpublished U.S.G.S. report, 1960) primarily with...
Preliminary delineation and description of the regional aquifers of Tennessee– The Cretaceous aquifer system of west-Tennessee
J. V. Brahana, Dolores Mulderink, M. W. Bradley
1986, Water-Resources Investigations Report 83-4039
The Cretaceous aquifer in Tennessee is composed of sand and clay of Cretaceous age. The aquifer occurs in west Tennessee from the Mississippi River east to the Tennessee River. Groundwater in the Cretaceous aquifer is recharged at outcrops and through overlying permeable deposits. The overlying Porter 's Creek clay acts...
Water Resources Research Grant Program project descriptions, fiscal year 1986
Branch of Research Grants and Contracts
1986, Open-File Report 86-548
Information is presented on the 43 projects funded by the United States Geological Survey 's Water Resources Grant Program in fiscal year 1986. The report gives the grant number; project title; performing organization; principal investigator(s); dates; and a project description which includes (1) identification of the water related problems and...
Hydrogeologic data for the Dakota aquifer system in Nebraska
M. J. Ellis
1986, Open-File Report 86-526
Data utilized in preparing an interpretive hydrogeologic report on the Dakota aquifer system in Nebraska are summarized. The study area is a 370,000 sq mi area that includes all of Kansas and Nebraska and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, and Texas. The broad objective for each Regional...