Further paleomagnetic results for the San Juan volcanic field of southern Colorado
M. E. Beck Jr., S.D. Sheriff, J. F. Diehl, E.A. Hailwood, P. W. Lipman
1977, Earth and Planetary Science Letters (37) 124-130
Combining paleomagnetic data for 17 new sites from the northwest portion of the (Oligocene) San Juan volcanic field of southern Colorado with data for 29 sites previously published yields a paleomagnetic pole at 85°N, 114°E (with a 95% confidence circle of...
Application of gold compositional analyses to mineral exploration in the United States
J.C. Antweiler, W. L. Campbell
1977, Journal of Geochemical Exploration (8) 17-29
Native gold is a mineral composed of Au, Ag and Cu in solid solution and it usually contains one or more trace metals as lattice impurities, as mineral inclusions, in grain boundaries or in surface coatings. Alloy proportions of Au, Ag and Cu, together with certain other elements, can...
Uranium and coexisting element behaviour in surface waters and associated sediments with varied sampling techniques used for uranium exploration
K.J. Wenrich-Verbeek
1977, Journal of Geochemical Exploration (8) 337-355
Optimum sampling methods in surface water and associated sediments for use in uranium exploration are being studied at thirty sites in Colorado, New Mexico, Arizona and Utah. For water samples, filtering is recommended to increase sample homogeneity and reproducibility because for most elements studied water samples which were allowed...
Upland nesting of American bitterns, marsh hawks, and short-eared owls
Harold F. Duebbert, J. T. Lokemoen
1977, Prairie Naturalist (9) 33-40
No abstract available....
Fluoride content of clay minerals and argillaceous earth materials
Josephus Thomas Jr., H.D. Glass, W.A. White, R.M. Trandel
1977, Clays and Clay Minerals (25) 278-284
A reliable method, utilizing a fluoride ion-selective electrode, is described for the determination of fluoride in clays and shales. Interference by aluminum and iron is minimal. The reproducibility of the method is about ±5% at different levels of fluoride concentration.Data are presented for various clay minerals and for the <2-µm...
Salmonella enteritidis and Arizona hinshawii isolated from wild sandhill cranes
R. M. Windingstad, D.O. Trainer, R. M. Duncan
1977, Avian Diseases (21) 704-707
Salmonella enteritidis serotype Rubislaw and Arizona hinshawii were isolated from cloacal swabs of "healthy" live-trapped sandhill cranes (Grus canadensis tabida) in Indiana and Wisconsin. These respective isolations were the first reported from wild sandhill cranes....
Techniques for the conversion to carbon dioxide of oxygen from dissolved sulfate in thermal waters
N.L. Nehring, P.A. Bowen, A.H. Truesdell
1977, Geothermics (5) 63-66
The fractionation of oxygen isotopes between dissolved sulfate ions and water provides a useful geothermometer for geothermal waters. The oxygen isotope composition of dissolved sulfate may also be used to indicate the source of the sulfate and processes of formation. The methods described here for separation, purification and reduction of...
Ore transport and deposition in the Red Sea geothermal system: a geochemical model
Wayne C. Shanks III, J. L. Bischoff
1977, Geochimica et Cosmochimica Acta (41) 1507-1519
Thermodynamic calculation of distribution of dissolved aqueous species in the Red Sea geothermal brine provides a model of ore transport and deposition in good agreement with observed accumulations of base metal sulfides, anhydrite, and barite.The Red Sea brine is recirculated seawater that acquires high salinity by low-temperature interaction with Miocene...
Cell dimensions and antiferromagnetism of lunar and terrestrial ilmenite single crystals
A. N. Thorpe, J.A. Minkin, F. E. Senftle, Corrine Alexander, Charles Briggs, H. T. Evans Jr., Gordon L. Nord Jr.
1977, Journal of Physics and Chemistry of Solids (38) 115-123
X-Ray diffraction and anisotropic magnetic measurements have been made on single crystals of lunar ilmenite and on terrestrial ilmenite from Bancroft, Ontario, Canada and the Ilmen Mountains, U.S.S.R. The elongated c">c-axis of lunar ilmenite, previously reported, is confirmed by new measurements. The shorter <span...
Biogeography of late Silurian and devonian rugose corals
W. A. Oliver Jr.
1977, Palaeogeography, Palaeoclimatology, Palaeoecology (22) 85-135
Three marine benthic faunal realms can be recognized in the Early and Middle Devonian. The Eastern Americas Realm consisted of most of the eastern half of North America and South America north of the Amazon. This realm extended in a southwest direction from the Devonian equator to approximately 35??S and...
Differences in swimming performance among strains of rainbow trout (Salmo gairdneri)
A.E. Thomas, M.J. Donahoo
1977, Journal of the Fisheries Research Board of Canada (34) 304-307
Swimming performance profiles, relating fish size to swimming time, were established for three strains of rainbow trout (Salmo gairdneri). No differences were found in slope of regressions; only in level at each size of fish. Swimming performances of New Zealand and Sand Creek strains did not differ, but were superior...
Hydrochemistry of the Lake Magadi basin, Kenya
B.F. Jones, H.P. Eugster, S.L. Rettig
1977, Geochimica et Cosmochimica Acta (41) 53-72
New and more complete compositional data are presented for a large number of water samples from the Lake Magadi area, Kenya. These water samples range from dilute inflow (<0.1 g/kg dissolved solids) to very concentrated brines (>300 g/kg dissolved solids). Five distinct hydrologic stages can be recognized in the evolution...
Paleomagnetic poles and polarity zonation from Cambrian and Devonian strata of Arizona
D. P. Elston, S.L. Bressler
1977, Earth and Planetary Science Letters (36) 423-433
Basal Paleozoic Tapeats Sandstone (Early and Middle Cambrian) in northern and central Arizona exhibits mixed polarity and a low-latitude paleomagnetic pole. Carbonates of Middle and early Late Cambrian age, and directly superposed carbonate and carbonate-cemented strata of latest Middle(?) and early...
Anisotropic magnetic susceptibility of erbium and ytterbium in zircon, ZrSiO4
A. N. Thorpe, Charles Briggs, T. Tsang, F. Senftle, Corrine Alexander
1977, Journal of Physics and Chemistry of Solids (38) 477-480
Magnetic susceptibility measurements have been made for both Er- and Yb-doped (1̃03ppm) zircon single crystals with the magnetic field perpendicular and parallel to the [001] axis. Large susceptibility anisotropies were found in both cases. Our observed anisotropies of ZrSiO4: Yb indicate small populations (1̃9%) of Yb ions at the axial...
History of the Pasamonte achondrite: Relative susceptibility of the SmNd, RbSr, and UPb systems to metamorphic events
D.M. Unruh, N. Nakamura, M. Tatsumoto
1977, Earth and Planetary Science Letters (37) 1-12
The RbSr, SmNd, and UPb systematics of the eucrite Pasamonte have been studied in order to investigate the relative susceptibility of the different systems to post-crystallization events and to...
Accumulation, elimination, and biotransformation of the lampricide 2',5-dichloro-4'-nitrosalicylanilide by Chironomus tentans
Joseph A. Kawatski, Ann E. Zittel
1977, Investigations in Fish Control 79
Abstract not submitted to date...
The National Earthquake Information Service
J.S. Derr
1977, Earthquake Information Bulletin (USGS) (9) 7-9
Mitigating earthquakes; the federal role
F. Press
1977, Earthquake Information Bulletin (USGS) (9) 4-5
With rapid approach of a capability to make reliable earthquake forecasts, it essential that the Federal Government play a strong, positive role in formulating and implementing plans to reduce earthquake hazards. Many steps are being taken in this direction, with the President looking to the Office of Science and Technology...
Studying earthquakes in New Zealand
G.A. Eiby
1977, Earthquake Information Bulletin (USGS) (9) 17-24
The seismographic stations of the University of California, Berkeley
B. A. Bolt
1977, Earthquake Information Bulletin (USGS) (9) 4-12
Ocean bottom seismographs
T.J.G. Francis
1977, Earthquake Information Bulletin (USGS) (9) 9-15
Climatologic and hydrologic data, southeastern Uinta Basin, Utah and Colorado, water years 1975 and 1976
Loretta S. Conroy, F.K. Fields
1977, Utah Basic-Data Release 29
This report contains climatologic and hydrologic data that were collected as a part of an investigation of the southeastern Uinta Basin, Utah and Colorado, by the U.S. Geological Survey. The data apply mainly to water years 1975 and 1976, which includes the period from October 1974 through September 1976. Included...
Yellow-crowned night herons sighted in North Dakota
Dennis G. Jorde, Gary L. Krapu, R.K. Green
1977, Prairie Naturalist (9) 31-32
Abstract has not been submitted...
Surface faulting and displacements of the 1976 Guatemala earthquake
R.C. Bucknam
1977, Earthquake Information Bulletin (USGS) (9) 12-17
Ground-water basic data for Morton County, North Dakota
D. J. Ackerman
1977, North Dakota Geological Survey Bulletin 72
No abstract available....
