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Page 6242, results 156026 - 156050

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Determination of gold in phosphates by activation analysis using epithermal neutrons
Jack J. Rowe
1973, Journal of Research of the U.S. Geological Survey (1) 79-80
A simple method is described for determining gold in phosphates and phosphatic materials. Samples in a cadmium container are irradiated with epithermal neutrons to minimize the formation of 32 P, while permitting the formation of adequate amounts of 198 Au.  Fire assay-radiochemical methods are used to separate the 198 Au.  Concentrations as low...
Floods in New York, 1971
F. Luman Robison
1973, Report
This report, for the calendar year 1971, was prepared at the request of the New York State Department of Transportation under provisions of an agreement between the New York State Department of Environmental Conservation and the U.S. Geological Survey fore a cooperative statewide program investigate the water resources of the...
Inorganic chemical investigation by x-ray fluorescence analysis: The Viking Mars Lander
P. Toulmin III, A. K. Baird, B. C. Clark, Klaus Keil, H. J. Rose Jr.
1973, Icarus (20) 153-178
The inorganic chemical investigation added in August 1972 to the Viking Lander scientific package will utilize an energy-dispersive X-ray fluorescence spectrometer in which four sealed, gas-filled proportional counters will detect X-rays emitted from samples of the Martian surface materials irradiated by X-rays from radioisotope sources (55Fe and 109Cd). The output...
The sorption of silver by poorly crystallized manganese oxides
B.J. Anderson, E. A. Jenne, T. T. Chao
1973, Geochimica et Cosmochimica Acta (37) 611-622
The sorption of silver by poorly crystallized manganese oxides was studied using synthesized samples of three members of the manganous manganite (birnessite) group, of different chemical composition and crystallinity, and a poorly organized γ-MnO2. All four oxides sorbed significant quantities of silver. The manganous manganites showed the greatest sorption (up...
More on noble gases in Yellowstone National Park hot waters
E. Mazor, R.O. Fournier
1973, Geochimica et Cosmochimica Acta (37) 515-525
Water and gas samples from research wells in hydrothermal areas of Yellowstone National Park, U.S.A., have been mass spectrometrically analyzed for their rare gas contents and isotopic composition. In agreement with previous findings, the rare gases have been found to originate from infiltrating...
Polyphenyl fluorides
D. R. Dickerson, G. C. Finger, R.H. Shiley
1973, Journal of Fluorine Chemistry (3) 113-116
Studies related to the chemistry of aromatic fluorine compounds have been carried out at the Illinois State Geological Survey since 1933. In our reference collection we have several compounds that have not previously been described. This communication records data on 18 biphenyl, three terphenyl and some benzene fluorinated derivatives that...
Extraction and concentration of organic solutes from water
Marvin C. Goldberg, Lewis L. DeLong, Mark Sinclair
1973, Analytical Chemistry (45) 89-93
A continuous extraction apparatus is described. It extracts and simultaneously concentrates organic solutes from water. Any immiscible solvent can be used in this apparatus if the solute will partition between the solvent and water. A concentration factor of up to 105 is obtained with this technique. The dipole moment difference...
Determination of indium in rocks by substoichiometric radioisotope dilution analysis
L. Paul Greenland, E.Y. Campbell
1973, Analytica Chimica Acta (67) 29-36
Rocks containing 10–140 ng of indium per g are decomposed with hydrofluoric and nitric acids in the presence of 114In. Indium is separated from other constituents by sequential extractions of the bromide, cupferronate, and acetylacetonate, and is then reacted with a substoichiometric amont of EDTA. Excess...
U-Th-Pb measurements of Luna 20 soil
M. Tatsumoto
1973, Geochimica et Cosmochimica Acta (37) 1079-1086
The concentrations of uranium, thorium and lead and the lead isotopic composition of Luna 20 soil were determined. The data indicate that the Luna 20 soil is mainly a mixture of highland anorthosites and low-K basalt, but little KREEP basalt. The U-Th-Pb systematics...
Tertiary plate tectonics and high-pressure metamorphism in New Caledonia
R.N. Brothers, M.C. Blake Jr.
1973, Tectonophysics (17) 337-358
The sialic basement of New Caledonia is a Permian-Jurassic greywacke sequence which was folded and metamorphosed to prehnite-pumpellyite or low-grade greenschist facies by the Late Jurassic. Succeeding Cretaceous-Eocene sediments unconformably overlie this basement and extend outwards onto oceanic crust. Tertiary tectonism occurred in three distinct phases.1. During the...
Isotopic composition of oil-field brines from Kettleman North Dome, California, and their geologic implications
Y.K. Kharaka, F.A.F. Berry, I. Friedman
1973, Geochimica et Cosmochimica Acta (37) 1899-1908
Deuterium and O18 analyses were made on 25 formation-water samples from Miocene (Temblor Formation) and Eocene (McAdams Formation) reservoir rocks at Kettleman North Dome oil field, California, and on three surface water samples from Reef Ridge located about three miles to the west of the field. The δO18 values obtained generally increase with...
Fish viruses: Buffers and methods for plaquing eight agents under normal atmosphere
K. Wolf, M. C. Quimby
1973, Applied Microbiology (25) 659-664
A universal procedure was sought for plaque assay of eight fish viruses (bluegill myxovirus, channel catfish virus, eel virus, Egtved virus, infectious hematopoietic necrosis virus, infectious pancreatic necrosis virus, lymphocystis virus, and the agent of spring viremia of carp (Rhabdovirus carpio), in dish cultures of various fish cells. Eagle minimal...
Petrography and stratigraphy of glacial drift, Mesabi-Vermilion Iron Range area, northeastern Minnesota
Thomas C. Winter, R. D. Cotter, H. L. Young
1973, Bulletin 1331-C
Glacial deposits in the Mesabi-Vermilion Iron Range area consist of four major till units and associated glaciofluvial sediments. Particle-size data and pebble, heavy-mineral, clay-mineral, and percentage-soluble content were used in addition to field description of color and texture to describe and correlate the drift units. The lowermost till unit, basal till,...
Ferdinand Vandiveer Hayden and the founding of the Yellowstone National Park
Water Resources Division, U.S. Geological Survey
1973, Report
Following the Civil War, the United States intensified the exploration of her western frontiers to gain a measure of the vast lands and natural resources in the region now occupied by our Rocky Mountain States. As part of this effort, the U.S. Geological and Geographical Survey of the Territories was...
The selenium content of U.S.G.S. standard rocks
M. M. Schnepfe, F.J. Flanagan
1973, Chemical Geology (12) 77-80
Selenium was determined in duplicate portions from three bottles of six U.S.G.S. standard rocks by a spect rofluorimetric procedure. The following averages, as p.p.m. Se, were obtained: PCC-1, 0.031; GSP-1, 0.088; BCR-1, 0.12; SCo-1, 0.91; MAG-1, 1.3; and SGR-1, 3.7. One-way analysis...