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Page 5334, results 133326 - 133350

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Seismic zonation of the Los Angeles region: A progress report
S. T. Algermissen, B. L. Askew, Roger D. Borcherdt, R. H. Campbell, S. H. Clarke Jr., Jack F. Evernden, T. E. Fumal, J. F. Gibbs, H. G. Greene, Thomas C. Hanks, E. L. Harp, S.H. Hartzell, M. G. Hooper, C.E. Johnson, W. B. Joyner, D. K. Keefer, W. J. Kockelman, D. S. McCulloch, D. M. Perkins, A. M. Rogers, P. A. Spudich, P.C. Thenhaus, J. C. Tinsley, R. C. Wilson, R.F. Yerkes, T. L. Youd, J. I. Ziony
1982, Conference Paper, Proceedings: Third international earthquake microzonation conference
No abstract available....
Hypocenter for the 1979 Imperial Valley Earthquake
Ralph J. Archuleta
1982, Geophysical Research Letters (9) 625-628
Using P-and S-wave arrival times with the laterally varying P-wave velocity structure derived from analysis of a refraction survey of the Imperial Valley, a hypocenter is ascertained for the October 15, 1979, Imperial Valley earthquake: Latitude 32° 39.50′N, Longitude 115° 19.80′W, Depth 8.0 km, Time 23:16:54.40 GMT....
Anticholinesterase poisoning of birds: Field monitoring and diagnosis of acute poisoning
E. F. Hill, W. James Fleming
1982, Environmental Toxicology and Chemistry (1) 27-38
Organophosphorus and carbamate pesticides are cholinesterase (ChE) inhibiting chemicals that have been responsible for avian die-offs. Identification of chemicals implicated in these die-offs is difficult and sometimes conclusions are solely circumstantial. However, when marked depression (inhibition) of brain ChE activity accompanies organophosphorus or carbamate residues in body tissues or ingesta,...
Measurements of fall migrant peregrine falcons from Texas and New Jersey
Charles J. Henny, W.S. Clark
1982, Journal of Field Ornithology (53) 326-332
Three subspecies of Peregrine Falcons (Falco peregrinus) breed in North America: F. p. anatum, formerly bred in all eco-geographic regions of North America south of the Arctic tundra, except for the immediate vicinity of the northwest Pacific Coast; F. p. tundrius breeds in the Arctic tundra; and F. p. pealei,...
Estimating pesticide burdens of bats from guano analyses
D. R. Clark Jr., R. K. LaVal, M.D. Tuttle
1982, Bulletin of Environmental Contamination and Toxicology (29) 214-220
Bat guano was first collected and analyzed for environmental pollutants in the early 1970's (REIDINGER 1972:53-64; PETIT & ALTENBACH 1973). Later analyses of both guano and bats from two roosts indicated a correspondence between levels of organochlorine residues in guano and in bat carcasses from the same colony (CLARK &...
Heavy metal concentrations in earthworms from soil amended with sewage sludge
W. N. Beyer, R. L. Chaney, B.M. Mulhern
1982, Journal of Environmental Quality (11) 381-385
Metal concentrations in soil may be elevated considerably when metal‐laden sewage sludge is spread on land. Metals in earthworms (Lumbricidae) from agricultural fields amended with sewage sludge and from experimental plots were examined to determine if earthworms are important in transferring metals in soil to wildlife. Earthworms from four sites...
Unweathered and weathered aviation kerosine: Chemical characterization and effects on hatching success of duck eggs
P.H. Albers, M. L. Gay
1982, Bulletin of Environmental Contamination and Toxicology (28) 430-434
Unweathered crude and refined oils are known to be very toxic to the embryos of aquatic birds (ALBERS 1977, 19781 SEARO et ale 1978, WHITE et al. 1979, McGILL & RICHMOND 1979, and others) but the toxicity of weathered petroleum is not as well established. The toxicity of Prudhoe Bay...
Parathion accumulation in cricket frogs and its effect on American kestrels
W. James Fleming, H. de Chacin, O. H. Pattee, T. G. Lamont
1982, Journal of Toxicology and Environmental Health (10) 921-927
Adult cricket frogs (Acris crepitans) were held individually for 96 h in static systems containing initial concentrations of either 0, 0.1, 1.0, or 10 ppm parathion in 10 ml water. Mortality of cricket frogs was directly related to the parathion concentration in the water. Frogs from the 1.0- and 10-ppm...
Deep oxygenated ground water: Anomaly or common occurrence?
I.J. Winograd, F. N. Robertson
1982, Science (216) 1227-1230
Contrary to the prevailing notion that oxygen-depleting reactions in the soil zone and in the aquifer rapidly reduce the dissolved oxygen content of recharge water to detection limits, 2 to 8 milligrams per liter of dissolved oxygen is present in water from a variety of deep (100 to 1000 meters)...
Uraniferous opal, Virgin Valley, Nevada: Conditions of formation and implications for uranium exploration
R. A. Zielinski
1982, Journal of Geochemical Exploration (16) 197-216
Uraniferous, fluorescent opal, which occurs in tuffaceous sedimentary rocks at Virgin Valley, Nevada, records the temperature and composition of uranium-rich solutions as well as the time of uranium-silica coprecipitation. Results are integrated with previous geologic and geochronologic data for the area to produce a model for uranium mobility that may...
Hydrogeochemical prospecting for porphyry copper deposits in the tropical-marine climate of Puerto Rico
W. R. Miller, W. H. Ficklin, R. E. Learned
1982, Journal of Geochemical Exploration (16) 217-233
A hydrogeochemical survey utilizing waters from streams and springs was conducted in the area of two known porphyry copper deposits in the tropical-marine climate of westcentral Puerto Rico. The most important pathfinder for regional hydrogeochemical surveys is sulfate which reflects the associated pyrite mineralization. Because of increased mobility due to...
Mechanisms for trace metal enrichment at the surface microlayer in an estuarine salt marsh
Leonard W. Lion
1982, Marine Chemistry (11) 235-244
The relative contributions of adsorption to particulate surfaces, complexation with surface-active organic ligands and uptake by micro-organisms were evaluated with respect to their importance in the surface microlayer enrichment (‘partitioning’) of Cd, Pb and Cu. The contributions of each process were inferred from field data in which partitioning of the...
Submarine valleys in the northeastern Gulf of Alaska: Characteristics and probable origin
Paul R. Carlson, Terry R. Bruns, Bruce F. Molnia, W.C. Schwab
1982, Marine Geology (47) 217-242
The continental shelf of the northeastern Gulf of Alaska Between Prince William Sound and Cross Sound is cut by at least eight major valleys. From west to east, these are Hinchinbrook Seavalley, Egg Island Trough, Kayak Trough, Bering Trough, Pamplona Troughs, Yakutat Valley, Alsek Valley and Yakobi Valley. Evidence common...
Continuous subaqueous deposition of the Permian Castile evaporites, Delaware Basin, Texas and New Mexico
Walter E. Dean, Roger Anderson
1982, Conference Paper, Depositional and diagenetic spectra of evaporites
Structures that are common in the Castile Formation (Ochoan) of the Delaware Basin, Texas and New Mexico (Fig. 1) include fine planar laminations, breccias, microfolded laminae, and nodular anhydrite. These structures, particularly the laminae, have been used to demonstrate the subaqueous depositional history of the Castile (Anderson and Kirkland, 1966;...
Application of wave field continuation to the inversion of refraction data
G. A. McMechan, Robert W. Clayton, Walter D. Mooney
1982, Journal of Geophysical Research B: Solid Earth (87) 927-935
Three examples of the inversion of refraction data by downward continuation illustrate the applicability of the method to field data. The first example is a refraction profile from the Mojave Desert, California. These data are spatially aliased and contain clear evidence of lateral inhomogeneity. The inversion in...
Precambrian age of the Boston Basin: New evidence from microfossils
C. Lenk, P.K. Strother, C. A. Kaye, E.S. Barghoorn
1982, Science (216) 619-620
A Vendian (Late Proterozoic Z) age has been determined for the Boston Basin by comparison of a microflora from the Cambridge Argillite with other late Precambrian assemblages. The microfossils, which include Bavlinella cf. faveolata, are preserved as petrifactions in pyrite. This age designation for the sedimentary rocks of the Boston...