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Page 4826, results 120626 - 120650

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Stratigraphy and correlation of the glacial deposits on the Montana Plains
D. S. Fullerton, R. B. Colton
1986, Quaternary Science Reviews (5) 69-82
Till units representing at least three pre-Illinoian continental glaciations, at least one Illinoian glaciation, and a late Wisconsin glaciation have been identified on the Montana Plains. Early Wisconsin or middle Wisconsin till units have not been identified. The southernmost limit of late Wisconsin glaciation is in Montana, more than 170...
Determination of ammonium in a buddingtonite sample by ion-chromatography
P.R. Klock, P. J. Lamothe
1986, Talanta (33) 495-498
An ion-chromatographic method for the direct determination of ammonium, potassium, and sodium in geologic materials is described. Samples are decomposed with a mixture of hydrofluoric and hydrochloric acids in a sealed polycarbonate bottle heated in a microwave oven. The ion-chromatograph separates the cations and determines them by conductivity measurement. The...
An analytical scheme for determining forms of sulphur in oil shales and associated rocks
M. L. Tuttle, M. B. Goldhaber, D.L. Williamson
1986, Talanta (33) 953-961
An analytical scheme for determining various forms of sulphur in oil shales and associated rocks is presented. Acid-soluble sulphate, sulphur contained in monosulphide and in disulphide minerals, and organically-bound sulphur are all quantitatively recovered as separate fractions. Finely-ground oil-shale samples are treated in an inert atmosphere with 6M hydrochloric acid to...
Determining gold in water by anion-exchange batch extraction
J. B. McHugh
1986, Talanta (33) 349-351
This paper describes a batch procedure for determining gold in natural waters. It is completely adaptable to field operations. The water samples are filtered and acidified before they are equilibrated with an anion-exchange resin by shaking. The gold is then eluted with acetone-nitric acid solution, and the eluate evaporated to...
Separation and preconcentration of the rare-earth elements and yttrium from geological materials by ion-exchange and sequential acid elution
J.G. Crock, F.E. Lichte, G. O. Riddle, C.L. Beech
1986, Talanta (33) 601-606
The abundance of rare-earth elements (REE) and yttrium in geological materials is generally low, and most samples contain elements that interfere in the determination of the REE and Y, so a separation and/or preconcentration step is often necessary. This is often achieved by ion-exchange chromatography with either nitric or hydrochloric...
The Outer Banks of North Carolina
Robert Dolan, Harry F. Lins
1986, Professional Paper 1177-B
Understanding the natural dynamics of barrier islands in the key to recognizing and estimation both the short-term and the long-term hazards of living on them. This report summarizes how the barrier islands were created, how they have changed, and why they will continue to change in spite of efforts to...
National water summary 1985: Hydrologic events and surface-water resources
United States Geological Survey
1986, Water Supply Paper 2300
The surface-water resources of the United States, the focal point for this National Water Summary, are extensively developed and managed to provide water supplies, hydroelectric power, navigation, recreational opportunities, and sufficient instream flows to maintain fish and wildlife habitats and adequate water quality. Surface water represents 77 percent of the...
The Georges Bank monitoring program 1985: Analysis of trace metals in bottom sediments during the third year of monitoring
Michael H. Bothner, R.R. Rendigs, Esma Campbell, M. W. Doughten, C.M. Parmenter, C. H. O’Dell, G.P. DiLisio, R. G. Johnson, J.R. Gillison, Norma Rait
1986, Circular 988
Of the 12 elements analyzed in bulk (undifferentiated) sediments collected adjacent to drilling rigs on Georges Bank, only barium was found to increase in concentration during the period when eight exploratory wells were drilled (July 1981 until September 1982). The maximum postdrilling concentration of barium (a major element in drilling...
Machine-readable files developed for the High Plains Regional Aquifer-System analysis in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
C.F. Ferrigno
1986, Water-Resources Investigations Report 86-4063
Machine-readable files were developed for the High Plains Regional Aquifer-System Analysis project are stored on two magnetic tapes available from the U.S. Geological Survey. The first tape contains computer programs that were used to prepare, store, retrieve, organize, and preserve the areal interpretive data collected by the project staff. The...
Hydrogeology of the surficial and intermediate aquifers of central Sarasota County, Florida
A. D. Duerr, R. M. Wolansky
1986, Water-Resources Investigations Report 86-4068
The geohydrologic units underlying a 300 sq mi area in central Sarasota County, Florida, consist of the surficial aquifer, intermediate aquifers (Tamiami-upper Hawthorn and lower Hawthorn-upper Tampa aquifers) and confining units, the Floridan aquifer system, and the sub-Floridan confining unit. The saturated thickness of the surficial aquifer ranges from about...
Channel-storage/discharge relations for the Peoria and La Grange dams on the Illinois River in Illinois
George Garklavs, A. R. Klinger, D. M. Mades
1986, Water-Resources Investigations Report 86-4112
The relations between channel storage and discharge at the Peoria and La Grange Dams on the Illinois River are defined. The relations were developed by regressing channel storage against peak discharge at the dams. Peak discharges at the Peoria Dam ranged from 19,700 to 79,500 cu ft/sec, whereas those at...
Water resources data for Mississippi, water year 1984
E.J. Tharpe, F. Morris, W. T. Oakley
1986, Water Data Report MS-84-1
Water resources data for the 1987 water year for Mississippi consist of records of stage, discharge, and water quality of streams; stage, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This report contains records of water discharge at 78 gaging stations; stage...
Occurrence of nitrate and herbicides in ground water in the upper Conestoga River basin, Pennsylvania : water-quality study of the Conestoga River headwaters, Pennsylvania
David K. Fishel, Patricia L. Lietman
1986, Water-Resources Investigations Report 85-4202
Nitrate-nitrogen and herbicide ground-water data is being collected by the u.s. Geological Survey as part of the nationwide Rural Clean Water Program designed to determine the effects of agricultural-management practices on water quality. Data collected from September 1982 to October 1983 · in the 188-square mile intensively farmed upper Conestoga...