Depositional and tectonic framework of the rift basins of Lake Baikal from multichannel seismic data
D. R. Hutchinson, A.J. Golmshtok, L.P. Zonenshain, T.C. Moore, C.A. Scholz, Kim D. Klitgord
1992, Geology (20) 589-592
Recent multichannel seismic reflection data from Lake Baikal, located in a large, active, continental rift in central Asia, image three major stratigraphic units totalling 3.5 to 7.5 km thick in four subbasins. A major change in rift deposition and faulting between the oldest and middle-rift units probably corresponds to the...
Implementation of softcopy photogrammetric workstations at the US Geological Survey
C.D. Skalet, G.Y.G. Lee, L. J. Ladner
1992, Photogrammetric Engineering and Remote Sensing (58) 57-63
The US Geological Survey has provided the Nation with primary quadrangle maps and map products for the last 50 years. The Survey recently completed initial coverage of the conterminous United States and Hawaii at 1:24 000 scale. In Alaska, complete coverage exists at 1:63 360 scale. Effort is underway to...
Geochemistry of waters in the Valley of Ten Thousand Smokes region, Alaska
T. E. C. Keith, J. M. Thompson, R. A. Hutchinson, L. D. White
1992, Journal of Volcanology and Geothermal Research (49) 209-231
Meteoric waters from cold springs and streams outside of the 1912 eruptive deposits filling the Valley of Ten Thousand Smokes (VTTS) and in the upper parts of the two major rivers draining the 1912 deposits have similar chemical trends. Thermal springs issue in the mid-valley area along a 300-m lateral...
Late Cenozoic lacustrine and climatic environments at Tule Lake, northern Great Basin, USA
Bradbury J. Platt
1992, Climate Dynamics (6) 275-285
Cores of lake sediment to a depth of 334 m in the town of Tulelake, Siskiyou County, northern California, document the late Cenozoic paleolimnologic and paleoclimatic history of the northwestern edge of the Great Basin. The cores have been dated by radiometric, tephrochronologic and paleomagnetic analyses. Lacustrine diatoms are abundant...
Desk-top model buildings for dynamic earthquake response demonstrations
A. Gerald Brady
1992, Conference Paper, NIST Special Publication
Models of buildings that illustrate dynamic resonance behavior when excited by hand are designed and built. Two types of buildings are considered, one with columns stronger than floors, the other with columns weaker than floors. Combinations and variations of these two types are possible. Floor masses and column stiffnesses are...
Volume II - Databases for GIS applications
Robert D. Rugg, M. Konecny, J. L. Morrison
1992, Computers, Environment and Urban Systems (16) 269
No abstract available....
Toxicity reduction of photo processing wastewaters
W. Wang
1992, Journal of Environmental Science and Health - Part A Environmental Science and Engineering (27) 1313-1328
The photo processing industry can be characterized by treatment processes and subsequent silver recovery. The effluents generated all contain various amounts of silver. The objectives of this study were to determine toxicity of photo processing effluents and to explore their toxicity mitigation. Six samples, from small shops to a major...
Determination of subsurface fluid contents at a crude-oil spill site
K.M. Hess, W.N. Herkelrath, H.I. Essaid
1992, Journal of Contaminant Hydrology (10) 75-96
Measurement of the fluid-content distribution at sites contaminated by immiscible fluids, including crude oil, is needed to better understand the movement of these fluids in the subsurface and to provide data to calibrate and verify numerical models and geophysical methods. A laboratory...
Increased concentrations of potassium in heartwood of trees in response to groundwater contamination
D.A. Vroblesky, T.M. Yanosky, F.R. Siegel
1992, Environmental Geology and Water Sciences (19) 71-74
The wood of tuliptrees (Liriodendron tulipifera L.) growing above groundwater contamination from a hazardous-waste landfill in Maryland contained elevated concentrations of potassium (K). The groundwater contamination also contained elevated concentrations of dissolved K, as well as arsenic (As), cadmium (Cd), chloride (Cl), iron (Fe), manganese (Mn), zinc (Zn), and organic...
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...
Tricaine used to separate phase‐I striped bass with uninflated gas bladders from normal fish
A. Henderson-Arzapalo, C. Lemm, J. Hawkinson, P. Keyes
1992, Progressive Fish-Culturist (54) 133-135
Tricaine (MS‐222) was used to separate striped bass (Morone saxatilis) with uninflated gas bladders from normal fish. Pond‐reared, phase‐1 striped bass (19–71 mm total length) were anaesthetized in a 12.5‰ saltwater solution containing 110–123 mg MS‐222/L. Fish with inflated gas bladders were neutrally buoyant or floated, whereas fish with uninflated...
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...
A revised configuration of the southern California uplift
R. O. Castle, T.D. Gilmore
1992, Geological Society of America Bulletin (104) 1577-1591
Recently recovered archival leveling data from southwestern Arizona and adjacent parts of California compel major revisions in the configuration and interpretation of the southern California uplift, both at its culmination and following its partial collapse. Re-examination of the older vertical-control record indicates that...
Bioremediation of uranium contamination with enzymatic uranium reduction
Derek R. Lovley, Elizabeth J.P. Phillips
1992, Environmental Science & Technology (26) 2228-2234
Enzymatic uranium reduction by Desulfovibrio desulfuricans readily removed uranium from solution in a batch system or when D. desulfuricans was separated from the bulk of the uranium-containing water by a semipermeable membrane. Uranium reduction continued at concentrations as high as 24 mM. Of a variety of potentially inhibiting anions and...
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...
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...
Toward digital geologic map standards: a progress report
George E. Ulrech, Mitchell W. Reynolds, Richard B. Taylor
1992, Conference Paper, ASTM Special Technical Publication
Establishing modern scientific and technical standards for geologic maps and their derivative map products is vital to both producers and users of such maps as we move into an age of digital cartography. Application of earth-science data in complex geographic information systems, acceleration of geologic map production, and reduction of...
Experimentally induced whirling disease II; Determination of longevity of the infective Triactinomyxon stage of Myxobolus cerebralis by vital staining
M.E. Markiw
1992, Journal of Aquatic Animal Health (4) 44-47
Effects of temperature and aging on viability and infectivity of laboratory-produced actinosporean triactinomyxon spores (infective stage of the organism causing whirling disease) were studied. In vitro staining of triactinomyxon spores with vital fluorescein diacetate correlated with the ability of the spores to infect fry of rainbow...
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...
Ground water chemistry and geochemical modeling of water-rock interactions at the Osamu Utsumi mine and the Morro do Ferro analogue study sites, Poços de Caldas, Minas Gerais, Brazil
D. Kirk Nordstrom, R.H. McNutt, I. Puigdomenech, John A.T. Smellie, M. Wolf
1992, Journal of Geochemical Exploration (45) 249-287
Surface and ground waters, collected over a period of three years from the Osamu Utsumi uranium mine and the Morro do Ferro thorium/rare-earth element (Th/REE) deposits, were analyzed and interpreted to identify the major hydrogeochemical processes. These results provided information on the current geochemical evolution of ground...
Net Late Holocene emergence despite earthquake-induced submergence, south-central Chile
B.F. Atwater, H.J. Nunez, C. Vita-Finzi
1992, Quaternary International (15-16) 77-85
Intertidal deposits show net Late Holocene emergence at three sites along the Pacific coast near Maulli??n and Carelmapu, Chile (latitude 41.6-41.7??S.). The maximum amount of net emergence is ca. 1 m in the past 1500 years and ca. 2 1 2 m in the past 4000 years. Emergence probably would...
Nutritional value of dietary nucleic acids and purine bases to rainbow trout (Oncorhynchus mykiss)
G. L. Rumsey, Robert Winfree, Steven Gerard Hughes
1992, Aquaculture (108) 97-110
Rainbow trout were fed diets with graded levels (0.6%, 1.6%, 2.5%, and 4.1%) of a yeast nucleic acid extract corresponding to dietary Saccharomyces cerevisiae levels of 7.5%, 20%, 30% and 50% or diets supplemented isonitrogenously (0.8% N) with free purines (adenine, guanine, xanthine, and hypoxanthine) in two 12-week studies. Fish fed increasing...
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...
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...
Quiet geomagnetic field representation for all days and latitudes
W.H. Campbell, E.R. Schiffmacher, B.R. Arora
1992, Journal of Geomagnetism & Geoelectricity (44) 459-480
This paper describes a technique for obtaining the quiet-time geomagnetic field variation expected for all days of the year and distribution of latitudes from a limited set of selected quiet days within a year at a discrete set of locations. We used a data set of observatories operated...
