Differential tolerance of Sulfolobus strains to transition metals
K.W. Miller, Risanico S. Sass, J.B. Risatti
1992, FEMS Microbiology Letters (93) 69-73
Sulfolobus acidocaldarius strains 98-3 and B12, and S. solfataricus ATCC 35091 were evaluated for tolerance to Cd, Co, Cu, Ni, Zn and Mg. The tolerance of strains 98-3 and ATCC 35091 to these metals was Mg > Zn > Cd > Cu ??? Co > Ni. For B12, however, the...
Sulfur isotopic disequilibrium and fluid-rock interaction during metamorphism of sulfidic black shales from the Waterville-Augusta area, Maine, USA
N.H.S. Oliver, T.C. Hoering, T.W. Johnson, D. Rumble III, Wayne C. Shanks III
1992, Geochimica et Cosmochimica Acta (56) 4257-4265
Sulfur isotope ratios of pyrite (py) and pyrrhotite (po) from regionally metamorphosed graphitic sulfidic schists and related rocks from south-central Maine, USA, were analysed using SO2 and SF6 techniques. There is a broad range in δ34S values for both pyrite and pyrrhotite at most outcrops, up to 8%. and overall the values...
Highlights of the 13 March 1992 Erzincan (Turkey) earthquake
Mehmet Çelebi
1992, Conference Paper, NIST Special Publication
The March 13, 1992 Ms = 6.8 Erzincan earthquake in Turkey is highlighted here. The epicenter of this earthquake was located 7.7 km from the eastern end of the North Anatolian fault. The strong motions recorded in Erzincan had peak ground accelerations of approximately 0.5 g, accompanied by a pulse...
Laser microprobe analyses of noble gas isotopes and halogens in fluid inclusions: Analyses of microstandards and synthetic inclusions in quartz
J.K. Böhlke, J.J. Irwin
1992, Geochimica et Cosmochimica Acta (56) 187-201
Ar, Kr, Xe, Cl, Br, I, and K abundances and isotopic compositions have been measured in microscopic fluid inclusions in minerals by noble gas mass spectrometry following neutron irradiation and laser extraction. The laser microprobe noble gas mass spectrometric (LMNGMS) technique was quantified by use of microstandards, including air-filled capillary...
Experimental study of iron-chloride complexing in hydrothermal fluids
J.B. Fein, J.J. Hemley, W. M. d’Angelo, A. Komninou, D.A. Sverjensky
1992, Geochimica et Cosmochimica Acta (56) 3179-3190
Mineral assemblage solubilities were measured in cold-seal pressure vessels as a function of pressure, temperature, and potassium chloride concentration in order to determine the nature and thermodynamic properties of iron-chloride complexes under hydrothermal conditions. The assemblage pyritepyrrhotite-magnetite was used to buffer ƒS2">ƒS2 and <span...
Differential unroofing within the central metasedimentary Belt of the Grenville Orogen: constraints from 40Ar/39Ar thermochronology
M. A. Cosca, E.J. Essene, Michael J. Kunk, J. F. Sutter
1992, Contributions to Mineralogy and Petrology (110) 211-225
An 40Ar/39Ar thermochronological investigation of upper greenschist to granulite facies gneiss, amphibolite and marble was conducted in the Central Metasedimentary Belt (CMB), Ontario, to constrain its cooling history. Incremental 40Ar/39Ar release spectra indicate that substantial differential unroofing occurred in the CMB between ??? 1000 and ??? 600 Ma. A consistent...
Sulfur, carbon, and oxygen isotope variations in submarine hydrothermal deposits of Guaymas Basin, Gulf of California, USA
J.M. Peter, Wayne C. Shanks III
1992, Geochimica et Cosmochimica Acta (56) 2025-2040
Sulfur, carbon, and oxygen isotope values were measured in sulfide, sulfate, and carbonate from hydrothermal chimney, spire, and mound samples in the southern trough of Guaymas Basin, Gulf of California, USA. δ34S values of sulfides range from −3.7 to 4.5%. and indicate that...
Duck virus enteritis
D. E. Docherty, J. C. Franson
A.E. Castro, W.P. Heuschele, editor(s)
1992, Book chapter, Veterinary diagnostic virology: A practitioner's guide
No abstract available....
Volcanic geology and eruption frequency, lower east rift zone of Kilauea volcano, Hawaii
R. B. Moore
1992, Bulletin of Volcanology (54) 475-483
Detailed geologic mapping and radiocarbon dating of tholeiitic basalts covering about 275 km2 on the lower east rift zone (LERZ) and adjoining flanks of Kilauea volcano, Hawaii, show that at least 112 separate eruptions have occurred during the past 2360 years. Eruptive products include spatter ramparts and cones, a shield,...
Host-rock controlled epigenetic, hydrothermal metasomatic origin of the Bayan Obo REEFe-Nb ore deposit, Inner Mongolia, P.R.C.
E. C. T. Chao, J.M. Back, J.A. Minkin, R. Yinchen
1992, Applied Geochemistry (7) 443-458
Bayan Obo, a complex rare earth element (REE)FeNb ore deposit, located in Inner Mongolia, P.R.C. is the world's largest known REE deposit. The deposit is chiefly in a marble unit (H8), but extends into an overlying unit of black shale, slate and...
Organic matter diagenesis as the key to a unifying theory for the genesis of tabular uranium-vanadium deposits in the Morrison Formation, Colorado Plateau
P. L. Hansley, C.S. Spirakis
1992, Economic Geology (87) 352-365
Interstitial, epigenetic amorphous organic matter is intimately associated with uranium in the Grants uranium region on the southern part of the Colorado Plateau in northwestern New Mexico and is considered essential to genetic models for these deposits. In contrast, uranium minerals are intimately associated with authigenic vanadium chlorite and vanadium...
Development of spatial data guidelines and standards: spatial data set documentation to support hydrologic analysis in the U.S. Geological Survey
James L. Fulton
1992, Conference Paper, ASTM Special Technical Publication
Spatial data analysis has become an integral component in many surface and sub-surface hydrologic investigations within the U.S. Geological Survey (USGS). Currently, one of the largest costs in applying spatial data analysis is the cost of developing the needed spatial data. Therefore, guidelines and standards are required for the development...
Lava-flow characterization at Pisgah Volcanic Field, California, with multiparameter imaging radar
Lisa R. Gaddis
1992, Geological Society of America Bulletin (104) 695-703
Multi-incidence-angle (in the 25° to 55° range) radar data acquired by the NASA/JPL Airborne Synthetic Aperture Radar (AIRSAR) at three wavelengths simultaneously and displayed at three polarizations are examined for their utility in characterizing lava flows at Pisgah volcanic field, California. Pisgah lava flows were erupted in three phases; flow...
Suspension freezing of bottom sediment and biota in the Northwest Passage and implications for Arctic Ocean sedimentation
E. Reimnitz, L. Marincovich Jr., M. McCormick, W.M. Briggs
1992, Canadian Journal of Earth Sciences (29) 693-703
Ice observations and sediment collected in a summer transit through the Northwest Passage provide insights on suspension freezing, the most important sediment entrainment mechanism for the Arctic Ocean. No evidence was seen for entrainment by bottom adfreezing, bluff slumping, river flooding, dragging ice keels, or significant eolian transport from land...
Enzymatic uranium precipitation
Y.A. Gorby, Derek R. Lovley
1992, Environmental Science & Technology (26) 205-207
No abstract available....
Use of a regional atmospheric model to simulate lake-atmosphere feedbacks associated with Pleistocene Lakes Lahontan and Bonneville
S. W. Hostetler, F. Giorgi
1992, Climate Dynamics (7) 39-44
A regional model of the atmosphere (version 4 of the NCAR mesoscale model, MM4) was used to assess whether lake-effect precipitation was a significant component of the late-Pleistocene hydrologic budgets of Lakes Lahontan and Bonneville. Control simulations for January and July of 1979 were made using MM4, and the Pleistocene...
Triton's surface-atmosphere energy balance
J.A. Stansberry, R.V. Yelle, J. I. Lunine, A. S. McEwen
1992, Icarus (99) 242-260
We explore the energetics of Triton's surface-atmosphere system using a model that includes the turbulent transfer of sensible heat as well as insolation, reradiation, and latent heat transport. The model relies on a 1° by 1° resolution hemispheric bolometric albedo map...
Lead exposure and recovery rates of black ducks banded in Tennessee
Michael D. Samuel, E. Frank Bowers, J. Christian Franson
1992, Journal of Wildlife Diseases (28) 555-561
American black ducks (Anas rubripes) wintering in Tennessee during 1986 to 1988 were tested for exposure to lead. Twelve percent of the birds had blood lead concentrations exceeding 0.2 ppm. Significant differences in the prevalence of lead exposure were found for adults (14.4%) and juveniles (8.2%). Exposed birds had higher...
Laboratory investigations on the role of sediment surface and ground water chemistry in transport of bacteria through a contaminated Sandy Aquifer
M. A. Scholl, R.W. Harvey
1992, Environmental Science & Technology (26) 1410-1417
No abstract available. ...
Disposition of 1-naphthol in the channel catfish (Ictalurus punctatus)
G. R. Stehly, S. M. Plakas
1992, Drug Metabolism and Disposition (20) 70-73
The pharmacokinetics, tissue distribution, and metabolism of 1-naphthol were examined in the channel catfish (Ictalurus punctatus ). After oral dosing, peak plasma concentrations of 1-naphthol occurred at 1 hr; parent compound made up less than 15% of the total radioactivity, and the bioavailability was 32%. Plasma protein...
Comparison of purge and trap GC/MS and purgeable organic chloride analysis for monitoring volatile chlorinated hydrocarbons
Larry B. Barber, E. Michael Thurman, Yoshi Takahashi, Mary C. Noriega
1992, Ground Water (30) 836-842
A combined field and laboratory study was conducted to compare purge and trap gas chromatography/mass spectrometry (PT‐GC/MS) and purgeable organic chloride (POC1) analysis for measuring volatile chlorinated hydro‐carbons (VCH) in ground water. Distilled‐water spike and recovery experiments using 10 VCH indicate that at concentrations greater than...
Selenium and sulfur relationships in alfalfa and soil under field conditions, San Joaquin Valley, California
R. C. Severson, L. P. Gough
1992, Journal of Environmental Quality (21) 353-358
Relationships between total Se and S or soluble SeO4 and SO4 in soils and tissue concentrations in alfalfa (Medicago sativa L.), under field conditions in the San Joaquin Valley of California, suggest that the rate of accumulation of Se in alfalfa may be reduced in areas where high Se...
Prevalence of lead exposure among age and sex cohorts of Canada geese
S. DeStefano, C. J. Brand, D. H. Rusch
1992, Canadian Journal of Zoology (70) 901-906
We examined the prevalence of lead exposure from ingestion of waste lead shot among age and sex cohorts of Canada geese (Branta canadensis) on the breeding, migration, and wintering grounds of the Eastern Prairie Population. Blood samples from 6963 geese were assayed for lead concentration by atomic absorption spectrophotometry. On...
Use of D-C resistivity to map saline ground water
Christina L. Stamos, Steven K. Predmore, Adel A. R. Zohdy
1992, Book, Irrigation and Drainage: Saving a Threatened Resource - In Search of Solutions, Proceedings of the Irrigation and Drainage Sessions at Water Forum '92
It has been estimated in previous studies that 23 square miles of the Oxnard aquifer, a member of a multi-layered aquifer system beneath the Oxnard plain in Ventura County, California, has been contaminated as a result of seawater intrusion. To investigate this and other potential sources of saline water, a...
Thermal waters along the Konocti Bay fault zone, Lake County, California: a re-evaluation
J. M. Thompson, Robert H. Mariner, L. D. White, T. S. Presser, William C. Evans
1992, Journal of Volcanology and Geothermal Research (53) 167-183
The Konocti Bay fault zone (KBFZ), initially regarded by some as a promising target for liquid-dominated geothermal systems, has been a disappointment. At least five exploratory wells were drilled in the vicinity of the KBFZ, but none were successful. Although the Na-K-Ca and Na-Li geothermometers indicate that the thermal waters...
