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Page 5632, results 140776 - 140800

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Publication Extents

Not all publications have extents, not all extents are completely accurate
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...
Yukon River: Evidence for extensive migration during the Holocene transgression
H.J. Knebel, J.S. Creager
1973, Science (179) 1230-1232
The shift of the Yukon River, during the Holocene sea-level transgression, from south of Nunivak Island during the Wisconsin maximum to its present location (a distance greater than 300 kilometers) is indicated by remanent channels, distinct subbottom structures, deltaic sediments, and anomalous rates of sediment accumulation on the continental shelf...
An empirical NaKCa geothermometer for natural waters
R.O. Fournier, A.H. Truesdell
1973, Geochimica et Cosmochimica Acta (37) 1255-1275
An empirical method of estimating the last temperature of water-rock interaction has been devised. It is based upon molar Na, K and Ca concentrations in natural waters from temperature environments ranging from 4 to 340°C. The data for most geothermal waters cluster near a straight line when plotted as the...
History of salmon in the Great Lakes, 1850-1970
John W. Parsons
1973, Technical Paper 68
This history of the salmon in the Great Lakes describes the decline and extinction of the Atlantic salmon (Salmo salar) in Lake Ontario in the 1800's; the failure to establish, by salmon culture, permanent or sizable populations of Atlantic or Pacific salmon in any of the Great Lakes in 1867-1965;...
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...
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...
Imaging characteristics of photogrammetric camera systems
R. Welch, J. Halliday
1973, Photogrammetria (29) 1-43
In view of the current interest in high-altitude and space photographic systems for photogrammetric mapping, the United States Geological Survey (U.S.G.S.) undertook a comprehensive research project designed to explore the practical aspects of applying the latest image quality evaluation techniques to the analysis of such systems. The project had two...
Radial particle-size segregation during packing of particulates into cylindrical containers
C.D. Ripple, R.V. James, J. Rubin
1973, Powder Technology (8) 165-175
In a series of experiments, soil materials were placed in long cylindrical containers, using various packing procedures. Soil columns produced by deposition and simultaneous vibratory compaction were dense and axially uniform, but showed significant radial segregation of particle sizes. Similar results were obtained with deposition and simultaneous impact-type compaction when...
Galerkin finite-element simulation of a geothermal reservoir
J.W. Mercer Jr., G.F. Pinder
1973, Geothermics (2) 81-89
The equations describing fluid flow and energy transport in a porous medium can be used to formulate a mathematical model capable of simulating the transient response of a hot-water geothermal reservoir. The resulting equations can be solved accurately and efficiently using a numerical...
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...
Endrin uptake and release by fingerling channel catfish (Ictalurus punctatus)
R.L. Argyle, G.C. Williams, H.K. Dupree
1973, Journal of the Fisheries Research Board of Canada (30) 1743-1744
Fingerling channel catfish (Ictalurus punctatus) offered diets containing 0.04–4.0 μg endrin/g food (dry weight) rapidly accumulated the pesticide. Amounts in the tissues were directly proportional to amounts in the food. Dietary endrin had no measurable effect on growth or mortality. After endrin was withdrawn from the diet, it rapidly disappeared and...
Red sea drillings
D.A. Ross, R.B. Whitmarsh, S.A. Ali, J.E. Boudreaux, R. Coleman, R.L. Fleisher, R. Girdler, Frank T. Manheim, A. Matter, C. Nigrini, P. Stoffers, P.R. Supko
1973, Science (179) 377-380
Recent drilling in the Red Sea has shown that much of the basin is underlain by evaporites of a similar age to that of evaporites found in the Mediterranean Sea. These evaporites and their structural positions indicate that other brine areas are present - and, indeed, several others have been...
Selective predation by mink, Mustela vison, on waterfowl
Alan B. Sargeant, George A. Swanson, Harold A. Doty
1973, American Midland Naturalist (89) 208-214
Predation by mink (Mustela vison) on three types of ducks (captive, pen-reared-released and wild) was documented in two studies at the Northern Prairie Wildlife Research Center, Jamestown, North Dakota. In the first study, 36 of 60 flightless adult and juvenile ducks held on eight 0.1-acre experimental ponds disappeared between 10...
Petrology of some lithic fragments from Luna 20
E. Roedder, P.W. Weiblen
1973, Geochimica et Cosmochimica Acta (37) 1031-1052
Microscopic and electron microprobe studies were made of polished thin sections of part of a 30-mg sample of 250–500 μm lunar soil returned by Luna 20 from a point between Mare Fecunditatis and Mare Crisium. Very fine-grained lithic (crystalline) rock fragments, composing about...