Earthquake predictions using seismic velocity ratios
R. W. Sherburne
1979, Earthquake Information Bulletin (USGS) (11) 18-21
Since the beginning of modern seismology, seismologists have contemplated predicting earthquakes. The usefulness of earthquake predictions to the reduction of human and economic losses and the value of long-range earthquake prediction to planning is obvious. Not as clear are the long-range economic and social impacts of earthquake prediction to a...
Soviet prediction of a major earthquake
D.W. Simpson
1979, Earthquake Information Bulletin (USGS) (11) 234-235
On November 1, 1978, a magnitude 7 earthquake occurred north of the Pamir Mountains near the Tadjiskistan-Kirghizia border, 150 kilometers east of Garm in Soviet Central Asia. Although the earthquake was felt in Tashkent, Dushanbe, and the Fergana Valley, the epicentral area was uninhabited at that time of year, and...
Records of prehistoric earthquakes in sedimentary deposits in lakes
J. Sims
Henry Spall, editor(s)
1979, Earthquake Information Bulletin (USGS) (11) 228-233
Historic records of earthquakes are too short to allow a true assessment of their recurrence intervals. Methods are needed, therefore, that will enable the seismicity of an area to be evaluated beyond the limit of historic records. One place where a record of ancient seismic activity might be preserved is in...
Earthquake studies on Canada’s west coast; Pacific Geoscience Centre
G. C. Rogers, Robin P. Riddihough
1979, Earthquake Information Bulletin (USGS) (11) 175-179
On a global scale, Canada's west coast lies within the zone of a seismicity that stretches around the Pacific Ocean. In plate tectonic terms, it is dominated by the same right-lateral shearing between the Pacific and American plates that is responsible for the seismicity of California. However, in southern British...
Nesting ecology of Arctic loons
Margaret R. Petersen
1979, The Wilson Bulletin (91) 608-617
Arctic Loons were studied on the Yukon-Kuskokwim Delta, Alaska, from the time of their arrival in May to their departure in September, in 1974 and 1975. Pairs arrived on breeding ponds as soon as sufficient meltwater was available to allow their take-off and landing. Loons apparently do not initiate nests...
Manganese nodule resources in the northeastern equatorial Pacific
V.E. McKelvey, Nancy A. Wright, Robert W. Rowland
1979, Book chapter, Marine Geology and Oceanography of the Pacific Manganese Nodule Province
Recent publication of maps at scale 1:1,000,000 of the northeastern equatorial Pacific region showing publicly available information on the nickel plus copper content of manganese nodules has made it possible to outline the prime area between the Clarion and Clipperton fracture zones which has been the focus of several recent...
Reconnaissance study of Upper Cretaceous to Miocene stratigraphic units and sedimentary facies, Kodiak and adjacent islands, Alaska, with a section on sedimentary petrography
Tor Helge Nilsen, George William Moore, Gary R. Winkler
1979, Professional Paper 1093
No abstract available....
Exploitation of marine mammals: r-selection of K-strategists?
J. A. Estes
1979, Journal of the Fisheries Research Board of Canada (36) 1209-1217
The importance of marine mammals as predators to the organization of marine communities is poorly known, although in several structurally analogous systems the ecological and evolutionary roles of predators are known to be of considerable importance. Occupation of the marine environment by mammals probably carried physiological constraints for single-young pregnancies...
Cellular immune response in rainbow trout Salmo gairdneri Richardson to Yersinia ruckeri O-antigen monitored by the passive haemolytic plaque assay test
D. P. Anderson, B.S. Roberson, O. W. Dixon
1979, Journal of Fish Diseases (2) 169-178
The specificity and kinetics of the immune response of rainbow trout (Salmo gairdneri) to single injections of an O-antigen extracted from the bacterial pathogen Yersinia ruckeri, which causes enteric redmouth in fish, were investigated by the passive haemolytic plaque assay and serum antibody quantitation. Doses ranging from 5 ng to 500...
Your fishes' health: Dedication of the new National Fish Health Research Laboratory
S. F. Snieszko
1979, Tropical Fish Hobbyist (27) 52-53
Fish viruses: A double-stranded RNA icosahedral virus from a North American cyprinid
J.A. Plumb, P.R. Bowser, J.M. Grizzle, A.J. Mitchell
1979, Journal of the Fisheries Research Board of Canada (36) 1390-1394
A previously unreported virus disease of cultured golden shiners (Notemigonus crysoleucas) is described. The condition is called golden shiner virus (GSV) disease. The virus is icosahedral, measures approximately 70 nm, is ether and heat resistant, stable at pH 3, 7, and 10, and appears to have a double stranded RNA core....
Space, time, and the third dimension (model error)
Marshall E. Moss
1979, Water Resources Research (15) 1797-1800
The space-time tradeoff of hydrologic data collection (the ability to substitute spatial coverage for temporal extension of records or vice versa) is controlled jointly by the statistical properties of the phenomena that are being measured and by the model that is used to meld the information sources. The control exerted...
A large submarine sand-rubble flow on kilauea volcano, hawaii
D.J. Fornari, J.G. Moore, L. Calk
1979, Journal of Volcanology and Geothermal Research (5) 239-256
Papa'u seamount on the south submarine slope of Kilauea volcano is a large landslide about 19 km long, 6 km wide, and up to 1 km thick with a volume of about 39 km3. Dredge hauls, remote camera photographs, and submersible observations indicate that it is composed primarily of unconsolidated...
Rare earth abundances and Rb-Sr systematics of basalts, gabbro, anorthosite and minor granitic rocks from the Indian Ocean Ridge System, Western Indian Ocean
C. E. Hedge, K. Futa, C.G. Engel, R.L. Fisher
1979, Contributions to Mineralogy and Petrology (68) 373-376
Basalts dredged from the Mid-Indian Ocean Ridge System have rare earth, Rb, and Sr concentrations like those from other mid-ocean ridges, but have slightly higher Sr87/Sr86 ratios. Underlying gabbroic complexes are similar to the basalts in Sr87/Sr86, but are poorer K, Rb, and in rare earths. The chemical and isotopic...
Solubility of some alkali and alkaline earth chlorides in water at moderate temperatures
M.A. Clynne, R.W. Potter II
1979, Journal of Chemical and Engineering Data (24) 338-340
Solubilities for the binary systems, salt-H2O, of the chlorides of lithium, rubidium, cesium, magnesium, calcium, strontium, and barium from near 0??C to the saturated boiling point are reported. The experimental data and coefficients of an equation for a smoothed curve describing each system are listed in the tables. The data...
Diagenetic changes in the elemental composition of unrecrystallized mollusk shells
P.C. Ragland, O. H. Pilkey, B. W. Blackwelder
1979, Chemical Geology (25) 123-134
The Mg, Sr, Mn, Fe, Na and K contents were determined for 230 apparently unrecrystallized mollusk shells (gastropods and bivalves) ranging in age from late Cretaceous to Holocene. Consistent differences between the Holocene and fossil shells with respect to concentrations of all these elements are attributed to postburial diagenetic changes....
Amino acid racemization dating of fossil bones, I. inter-laboratory comparison of racemization measurements
J.L. Bada, E. Hoopes, D. Darling, G. Dungworth, H.J. Kessels, K.A. Kvenvolden, D.J. Blunt
1979, Earth and Planetary Science Letters (43) 265-268
Enantiomeric measurements for aspartic acid, glutamic acid, and alanine in twenty-one different fossil bone samples have been carried out by three different laboratories using different analytical methods. These inter-laboratory comparisons demonstrate that D/L aspartic acid measurements are highly reproducible, whereas the enantiomeric measurements...
Origin of reverse-graded bedding in air-fall pumice, Coso Range, California
W. A. Duffield, C. R. Bacon, G.R. Roquemore
1979, Journal of Volcanology and Geothermal Research (5) 35-48
The origin of reverse grading in air-fall pyroclastic deposits has been ascribed to: (1) changing conditions at an erupting vent; (2) deposition in water; or (3) rolling of large clasts over smaller clasts on the surface of a steep slope. Structural features in a deposit of air-fall pumice lapilli in...
The determination of silver in silicate rocks by electrothermal atomic absorption spectrometry
P. J. Aruscavage, E.Y. Campbell
1979, Analytica Chimica Acta (109) 171-175
Silver is extracted from a 20% tartaric acid solution by using butyl acetate and diphenylthiourea, and the organic layer is analyzed directly by the graphite-furnace technique. The precisions is ca. 8% as estimated from multiple analysis of 13 standard rocks; there are no systematic errors. The detection limit is 2.4...
Origin of dolomite in Miocene Monterey Shale and related formations in the Temblor Range, California
I. Friedman, K. J. Murata
1979, Geochimica et Cosmochimica Acta (43) 1357-1365
Dolomites in thick sections of Miocene Monterey Shale and related formations in the Temblor Range of California acquired their isotopic compositions as they formed at shallow depth in the original sediment rich in organic matter, and retained the composition against the vicissitudes of burial diagenesis. The oxygen isotopes of dolomites...
Arsenic and fluoride in the upper madison river system: Firehole and gibbon rivers and their tributaries, yellowstone national park, wyoming, and southeast montana
J. M. Thompson
1979, Environmental Geology (3) 13-21
Chemical analyses of 21 water samples from the Firehole and Gibbon Rivers, which combine to form the Madison River, gave arsenic and fluoride values above the Environmental Protection Agency Interim Primary Drinking Water maximum contaminant levels (0.05 mg/l arsenic and 2.0 mg/l fluoride). On 18 October, 1975, during a period...
Preliminary isotopic studies of fluids from the Cerro Prieto geothermal field
A.H. Truesdell, R. O. Rye, F. J. Pearson Jr., E.R. Olson, N.L. Nehring, J. F. Whelan, M.A. Huebner, T.B. Coplen
1979, Geothermics (8) 223-229
Preliminary isotopic studies of Cerro Prieto geothermal fluids and earlier studies of Mexicali Valley ground waters suggest local recharge of the geothermal system from the area immediately to the west. Oxygen isotope exchange of water with reservoir rock minerals at temperatures increasing with depth has produced fluids with oxygen-18 contents...
Atomic-absorption spectrometric determination of cobalt, nickel, and copper in geological materials with matrix masking and chelation-extraction
R. F. Sanzolone, T. T. Chao, G. L. Crenshaw
1979, Analytica Chimica Acta (105) 247-253
An atomic-absorption spectrometric method is reported for the determination of cobalt, nickel, and copper in a variety of geological materials including iron- and manganese-rich, and calcareous samples. The sample is decomposed with HP-HNO3 and the residue is dissolved in hydrochloric acid. Ammonium fluoride is added to mask iron and 'aluminum. After...
A review of numerical simulation of hydrothermal systems
J.W. Mercer, C.R. Faust
1979, Hydrological Sciences Bulletin (24) 335-344
Many advances in simulating single and two-phase fluid flow and heat transport in porous media have recently been made in conjunction with geothermal energy research. These numerical models reproduce system thermal and pressure behaviour and can be used for heat-transport problems other than those associated with geothermal energy development, such...
D/H ratios in speleothem fluid inclusions: A guide to variations in the isotopic composition of meteoric precipitation?
R.S. Harmon, H.P. Schwarcz, J. R. O’Neil
1979, Earth and Planetary Science Letters (42) 254-266
D/H ratios of fluid inclusion waters extracted from230Th/234U-dated speleothems that were originally deposited under conditions of isotopic equilibrium should provide a direct estimate of the hydrogen isotopic composition of ancient meteoric waters. We present here D/H ratios for 47 fluid inclusion...
