Rapid determination of sulfur in rocks
Leonard Shapiro
1973, Journal of Research of the U.S. Geological Survey (1) 81-84
Sulfur is determined turbidimetrically as barium sulfate after an aqua regia attack. The turbidity is formed in an ammoniacal solution from which R2O3 has been centrifuged. Reproducibility of turbidity is obtained by adding barium chloride as a solid rather than as a solution. Sulfur is determined in the range 0.01-4 percent within ±0.02 absolute, or...
Determination of lead, uranium, thorium, and thallium in silicate glass standard materials by isotope dilution mass spectrometry
I. L. Barnes, E. L. Garner, J. W. Gramlich, L. J. Moore, T. J. Murphy, L. A. Machlan, W. R. Shields, Mitsunobu Tatsumoto, R. J. Knight
1973, Analytical Chemistry (45) 880-885
A set of four standard glasses has been prepared which have been doped with 61 different elements at the 500-, 50-, 1-, and 0.02-ppm level. The concentrations of lead, uranium, thorium, and thallium have been determined by isotope dilution mass spectrometry at a number of points in each of the...
Ground-water yield potential in Knox County, Tennessee
W. H. McMaster
1973, IMAP 767-E
No abstract available....
Map, line and sinker
Water Resources Division, U.S. Geological Survey
1973, Report
An incident of fenthion mosquito control and subsequent avian mortality
R.W. Seabloom, G.L. Pearson, L.W. Oring, J.R. Reilly
1973, Journal of Wildlife Diseases (9) 18-20
Mass mortality among migratory birds at Grand Forks, North Dakota, was attributed to a mosquito control operation employing the insecticide fenthion. The factors involved may have included the toxicity of the pesticide for birds, the method of application and coincidence with the peak of the spring warbler migration....
Tree rings : timekeepers of the past
Water Resources Division, U.S. Geological Survey
1973, Report
A casual look at the top of a tree stump reveals that it is composed of a series of concentric rings-tree rings -that become larger and larger in diameter outward from the center of the stump. Because a single tree ring is usually formed each year, the age of the...
Autographic theme extraction
D. Edson, Alden P. Colvocoresses
1973, Report
Remote-sensor images, including aerial and space photographs, are generally recorded on film, where the differences in density create the image of the scene. With panchromatic and multiband systems the density differences are recorded in shades of gray. On color or color infrared film, with the emulsion containing dyes sensitive to...
Popular publications of the United States Geological Survey
Water Resources Division, U.S. Geological Survey
1973, Report
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...
Use of space shuttle for earth resource mapping, inventory and evaluation
W. D. Carter
G.W. Morgenthaler, W.J. Bursnall, editor(s)
1973, Book chapter, Space shuttle payloads
No abstract available. ...
The use of fish bioassays to determine the rate of deactivation of pesticides
L. L. Marking, C.R. Walker
G.E. Glass, editor(s)
1973, Book chapter, Bioassay techniques and environmental chemistry
Abstract not submitted to date...
Stress changes ahead of an advancing tunnel
J.F. Abel, F. T. Lee
1973, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (10) 673-697
Instrumentation placed ahead of three model tunnels in the laboratory and ahead of a crosscut driven in a metamorphic rock mass detected stress changes several tunnel diameters ahead of the tunnel face. Stress changes were detected 4 diameters ahead of a model tunnel drilled into nearly elastic acrylic, 2·50 diameters...
Coexisting cummingtonite and aluminous hornblende from garnet amphibolite, Boehls Butte area, Idaho, USA
A. Hietanen
1973, LITHOS (6) 261-264
Electron microprobe analyses of green hornblende and coexisting cummingtonite from garnet amphibolite show identical Fe/Mg ratios ( = 0.9). Cummingtonite is iron-magnesium silicate with very little calcium and aluminum and practically no alkalies. In contrast, the hornblende has 1.5 tetrahedral Al, 0.9 octahedral...
Production of superheated steam from vapor-dominated geothermal reservoirs
A.H. Truesdell, D. E. White
1973, Geothermics (2) 154-173
Vapor-dominated geothermal systems such as Larderello, Italy, The Geysers, California, and Matsukawa, Japan yield dry or superheated steam when exploited. Models for these systems are examined along with production data and the thermodynamic properties of water, steam and rock. It is concluded that...
Ultrafiltration by a compacted clay membrane-II. Sodium ion exclusion at various ionic strengths
B.B. Hanshaw, T.B. Coplen
1973, Geochimica et Cosmochimica Acta (37) 2311-2327
Several recent laboratory studies and field investigations have indicated that shales and compacted clay minerals behave as semipermeable membranes. One of the properties of semipermeable membranes is to retard or prevent the passage of charged ionic species through the membrane pores while allowing relatively free movement of uncharged species. This...
Mariner 9-Image processing and products
E.C. Levinthal, W.B. Green, J.A. Cutts, E.D. Jahelka, R.A. Johansen, M.J. Sander, J.B. Seidman, A.T. Young, L.A. Soderblom
1973, Icarus (18) 75-101
The purpose of this paper is to describe the system for the display, processing, and production of image-data products created to support the Mariner 9 Television Experiment. Of necessity, the system was large in order to respond to the needs of a large team of scientists with a broad scope...
Statistical recognition of late Cretaceous cyclic sedimentation by means of calcareous nannofossil population studies
I.R. Mayers, T.R. Worsley
1973, Palaeogeography, Palaeoclimatology, Palaeoecology (13) 81-90
The relative abundance of calcareous nannofossil taxa in a sequence of samples collected from a continuous Upper Maastrichtian section in Alabama has been analyzed using statistical techniques. Results indicate that an increase of arbitrarily chosen long-ranging forms can be represented by a slowly...
Uranium concentration and distribution in six peridotite inclusions of probable mantle origin
E.L. Haines, R. E. Zartman
1973, Earth and Planetary Science Letters (20) 45-53
Fission-track activation was used to investigate uranium concentration and distribution in peridotite inclusions in alkali basalt from six localities. Whole-rock uranium concentrations range from 24 to 82 ng/g (1ng= 10−9g). Most of the uranium is uniformly distributed in the major silicate phases...
Comparison of the magnetic properties of glass from Luna 20 with similar properties of glass from the Apollo missions
F. E. Senftle, A. N. Thorpe, C.C. Alexander, C.L. Briggs
1973, Geochimica et Cosmochimica Acta (37) 1053-1062
Magnetic susceptibility measurements have been made on four glass spherules and fragments from the Luna 20 fines; two at 300°K and two from 300°K to 4°K. From these data the magnetic susceptibility extrapolated to infinite field, the magnetization at low fields and also...
K, Rb, Sr and 87Sr 86Sr in rocks from the Mid-Indian Oceanic Ridge
K.V. Subbarao, C. E. Hedge
1973, Earth and Planetary Science Letters (18) 223-228
The 87Sr/86Sr ratios of Mid-Indian Oceanic Ridge (MIOR) basalts are nearly identical (0.7032 to 0.7035), with the exception of one more highly radiogenic sample (0.7043). These values are consistently higher than the strontium isotopic ratios of the ridge basalts from Atlantic and...
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...
Annual compilation and analysis of hydrologic data for urban studies in the Dallas, Texas, metropolitan area, 1971
B.C. Massey
1973, Report
No abstract available....
Changes in the visual pigments of trout
D.M. Allen, W.N. McFarland, F.W. Munz, H. A. Poston
1973, Canadian Journal of Zoology (51) 901-914
The proportions of two visual pigments (rhodopsin and porphyropsin) were examined in four species of trout under experimental and natural conditions. Brook trout (Salvelinus fontinalis), rainbow trout (Salmo gairdneri), and brown trout (Salmo trutta) have different relative proportions of visual pigments in their retinae. The visual pigment balance in wild...
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...
Preliminary geologic map of the Calaveras Reservoir Quadrangle, Alameda and Santa Clara counties, California
T. W. Dibblee Jr.
1973, Open-File Report 73-58
No abstract available....
