Hormonal control of sulfate uptake by bronchial cartilage of coho salmon: Role of IGF-I
S. D. McCormick, P.I. Tsai, K.M. Kelley, R. S. Nishioka, H. A. Bern
1992, Journal of Experimental Zoology (262) 166-171
The direct hormonal control of sulfate uptake by cartilage matrix of coho salmon was examined by exposing branchial cartilage to 1 μCi · ml−1 35SO4 for 48 hours at 15°C in a defined medium. Sulfate uptake occurred primarily in cartilage (rather than bone) and the amount of specific uptake was similar in...
Gold and platinum in shales with evidence against extraterrestrial sources of metals
R.M. Coveney Jr., J.B. Murowchick, R. I. Grauch, M.D. Glascock, J.R. Denison
1992, Chemical Geology (99) 101-114
Few black shales contain concentrations of precious metals higher than average continental crust (i.e. ???5 ppb Au). Yet Au and Pt alloys have been reported from the Kupferschiefer in Poland. Moreover, thin sulfide beds in certain Chinese and Canadian shales contain several hundred ppb Au, Pd and Pt and average...
Contribution of 222Rn in domestic water supplies to 222Rn in indoor air in Colorado homes
E.P. Lawrence, R. B. Wanty, P. Nyberg
1992, Health Physics (62) 171-177
The contribution of 222Rn from domestic water wells to indoor air was investigated in a study of 28 houses near Conifer, CO. Air concentrations determined by alpha-track detectors (ATDs) and continuous radon monitors were compared with the predictions of a single-cell model. In many of the houses, the water supply...
Thermal springs in Lake Baikal
Wayne C. Shanks III, E. Callender
1992, Geology (20) 495-497
Pore waters extracted from sediment cores were analyzed for their oxygen and hydrogen isotopic compositions and major ion chemistry to determine the source of water from a vent area for diffuse lake-bottom thermal springs or seeps in Frolikha Bay, northeastern Lake Baikal. The...
Jurassic ash-flow sheets, calderas, and related intrusions of the Cordilleran volcanic arc in southeastern Arizona: Implications for regional tectonics and ore deposits
P. W. Lipman, J.T. Hagstrum
1992, Geological Society of America Bulletin (104) 32-39
Volcanologic, petrologic, and paleomagnetic studies of widespread Jurassic ash-flow sheets in the Huachuca-southern Dragoon Mountains area have led to identification of four large source calderas and associated comagmatic intracaldera intrusions. Stratigraphic, facies, and contact features of the caldera-related tuffs also provide constraints on...
Modelling crustacean fisheries: effects of parasites on management strategies
A. M. Kuris, K. D. Lafferty
1992, Canadian Journal of Fisheries and Aquatic Sciences (49) 327-336
Relationship between inferred redox potential of the depositional environment and geochemistry of the Upper Pennsylvanian (Missourian) Stark Shale Member of the Dennis Limestone, Wabaunsee County, Kansas, U.S.A.
J. R. Hatch, J.S. Leventhal
1992, Chemical Geology (99) 65-82
Analyses of 21 samples collected from a core of the 52.8-cm-thick Stark Shale Member of the Dennis Limestone in Wabaunsee County, Kansas, demonstrate four cycles with two-orders-of-magnitude variations in contents of Cd, Mo, P, V and Zn, and order-of-magnitude variations in contents of organic carbon, Cr, Ni, Se and U....
Moment-tensor solutions estimated using optimal filter theory: global seismicity, 1990
S.A. Sipkin, R.E. Needham
1992, Physics of the Earth and Planetary Interiors (70) 16-21
Moment-tensor solutions, estimated using optimal filter theory, are listed for 114 moderate-to-large size earthquakes occurring during 1990. ?? 1992....
A new model for tabular-type uranium deposits
R.F. Sanford
1992, Economic Geology (87) 2041-2055
Tabular-type uranium deposits occur as tabular, originally subhorizontal bodies entirely within reduced fluvial sandstones of Late Silurian age or younger. This paper proposes that belts of tabular-type uranium deposits formed in areas of mixed local and regional ground-water discharge shortly after deposition of the host sediments. The general characteristics of...
Age and nature of the basement in northeastern Washington and northern Idaho: isotopic evidence from Mesozoic and Cenozoic granitoids
M.J. Whitehouse, J. S. Stacey, F. K. Miller
1992, Journal of Geology (100) 691-701
K-feldspar Pb and whole rock Nd isotopic analyses from 25 Mesozoic and Cenozoic plutonic rocks and two gneisses from NE Washington and northern Idaho are used to elucidate the age and nature of the concealed cratonic basement. The plutons form two highly...
Use of weather types to disaggregate general circulation model predictions
L.E. Hay, G. J. McCabe Jr., D.M. Wolock, M. A. Ayers
1992, Journal of Geophysical Research (97) 2781-2790
General circulation models (GCMs) simulate climatic conditions with a grid cell resolution on the order of 100,000 km2. This resolution is inadequate to assess the effects of climatic change on water resources at a regional scale. A method has been developed that uses weather-type analysis as...
Crystalline solution series and order-disorder within the natrolite mineral group
M. Ross, M.J.K. Flohr, D.R. Ross
1992, American Mineralogist (77) 685-703
Electron microprobe and X-ray analyses were made of natrolite, tetranatrolite, gonnardite, and thomsonite from the Magnet Cove alkaline igneous complex, Arkansas, and of selected specimens from the U.S. National Museum. This information and data from the literature indicate that natrolite, mesolite, scolecite, edingtonite, and tetraedingtonite show only small deviations from...
Modeling transport in transient ground-water flow: An unacknowledged approximation
Daniel J. Goode
1992, Ground Water (30) 257-261
During unsteady or transient ground-water flow, the fluid mass per unit volume of aquifer changes as the potentiometric head changes, and solute transport is affected by this change in fluid storage. Three widely applied numerical models of two-dimensional transport partially account for the effects of transient flow by removing terms...
Thermodynamics and kinetics of reactions involving vanadium in natural systems: Accumulation of vanadium in sedimentary rocks
R. B. Wanty, M. B. Goldhaber
1992, Geochimica et Cosmochimica Acta (56) 1471-1483
A critical review of thermodynamic data for aqueous and solid V species is presented to evaluate dissolution, transport, and precipitation of V under natural conditions. Emphasis is given to results of experimental studies of V chemistry, especially those for which the experimental conditions are near those found in nature. Where...
The aqueous photolysis of α-pinene in solution with humic acid
Marvin C. Goldberg, Kirkwood M. Cunningham, George R. Aiken, Eugene R. Weiner
1992, Journal of Contaminant Hydrology (9) 79-89
Terpenes are produced abundantly by environmental processes but are found in very low concentrations in natural waters. Aqueous photolysis of solutions containing α-pinene, a representative terpene, in the presence of humic acid resulted in degradation of the pinene. Comparison of this reaction to photolysis of α-pinene in the presence of...
Intraspecific mitochondrial DNA variation in North American cervids
M. A. Cronin
1992, Journal of Mammalogy (73) 70-82
Intraspecific variation in mitochondrial DNA of North American cervids was assessed with restriction enzymes to determine relationships among populations and subspecies. No variation was detected in moose (Alces alces) and little in elk (Cervus elaphus). Caribou (Rangifer tarandus), white-tailed deer (Odocoileus virginianus), and mule deer (Odocoileus hemionus) possessed considerable...
Mini-Sosie high-resolution seismic method aids hazards studies
W. J. Stephenson, J. Odum, K. M. Shedlock, T. L. Pratt, R. A. Williams
1992, Eos, Transactions, American Geophysical Union (73) 473-476
A dramatic example of just how catastrophic earthquake damage can be occurred in 1989, when a nationally televised World Series game in San Francisco was preempted by the M 7.1 Loma Prieta earthquake. The surprising amount and distribution of damage reinforce the importance of seismic-hazard studies...
A systematic approach to modelling the dynamic linkage of climate, physical catchment descriptors and hydrologic response components
A.J. Jakeman, G.M. Hornberger, I.G. Littlewood, P.G. Whitehead, J. W. Harvey, K.E. Bencala
1992, Mathematics and Computers in Simulation (33) 359-366
No abstract available....
Aspects of the ecology of an isolated brook trout (Salvelinus fontinalis) population in Fairfax County, Virginia
J.E. Lovich
1992, Journal of the Pennsylvania Academy of Science (65) 107-111
Riparian vegetation recovery patterns following stream channelization: A geomorphic perspective
Cliff R. Hupp
1992, Ecology (73) 1209-1226
Hundreds of kilometres of West Tennessee streams have been channelized since the turn of the century. After a stream is straightened, dredged, or cleared, basinwide ecologic, hydrologic, and geomorphic processes bring about an integrated, characteristic recovery sequence. The rapid pace of channel responses to channelization provides an opportunity to document...
Small explosions interrupt 3-year quiescence at Mount St. Helens, Washington
B. Myers
1992, Earthquakes & Volcanoes (USGS) (23) 58-73
On December 11, 1989, geologists working in the crater at Mount St. Helens discovered two thin layers of ash separated by fresh snow-clear evidence that at least two small explosions had occurred recently. The explosions were neither seen nor heard, but on December 7 scientists suspected that a small ash-producing...
The October 1992 Parkfield, California, earthquake prediction
J. Langbein
1992, Earthquakes & Volcanoes (USGS) (23) 160-169
A magnitude 4.7 earthquake occurred near Parkfield, California, on October 20, 992, at 05:28 UTC (October 19 at 10:28 p.m. local or Pacific Daylight Time).This moderate shock, interpreted as the potential foreshock of a damaging earthquake on the San Andreas fault, triggered long-standing federal, state and local government plans to...
Damage and intensity survey
G. Reagor, L. R. Brewer
1992, Earthquakes & Volcanoes (USGS) (23) 116-123
A trio of widely felt earthquakes struck the Cape Mendocino region of northern California in an 18-hour period on April 25-26, 1992. Collectively these shocks caused significant damage to older structures in the sparsely populated, mountainous epicentral region. The area where the first shock, the strongest of the three (M=7.1),...
Fluorescent powder is only partially successful in tracking movements of the six-lined racerunner (Cnemidophorus sexlineatus)
C.K. Dodd Jr.
1992, Florida Field Naturalist (20) 8-14
No abstract available....
Strong-motion data
C. Mueller
1992, Earthquakes & Volcanoes (USGS) (23) 124-126
The April 25, 1992, mainshock (M=7.) near Petrolia and the two largest afterschokcs (M=6.6 and M=6.7) were recorded by networks of strong-motion accelerographs operated by the U.S Geological Survey (USGS) and the State of California Strong-Motion Instrumentation Program (CSMIP). The map on the next page shows the locations of USGS...
