Mass-marking of otoliths of lake trout sac fry by temperature manipulation
Roger A. Bergstedt, Randy L. Eshenroder, Charles Bowen, James G. Seelye, Jeffrey C. Locke
1990, American Fisheries Society Symposium (7) 216-223
The otoliths of 676,000 sac fry of lake trout Salvelinus namaycush in 1986, and of 1,100,000 in 1987, were marked by daily manipulation of water temperature. The fish were stocked into Lake Huron in the spring. Otolith marks consisted of groups of daily growth rings accentuated into recognizable patterns by...
Volcanism in the Sumisu Rift, I. Major element, volatile, and stable isotope geochemistry
A.G. Hochstaedter, J.B. Gill, M. Kusakabe, S. Newman, M. Pringle, B. Taylor, P. Fryer
1990, Earth and Planetary Science Letters (100) 179-194
A bimodal volcanic suite with KAr ages of 0.05–1.40 Ma was collected from the Sumisu Rift using alvin. These rocks are contemporaneous with island arc tholeiite lavas of the Izu-Ogasawara arc 20 km to the east, and provide a present day example of volcanism associated with...
Analysis of eight argonne premium coal samples by X-ray fluorescence spectrometry
J.R. Evans, G.A. Sellers, R. G. Johnson, D.V. Vivit, J. Kent
1990, Energy & Fuels (4) 440-442
X-ray fluorescence spectrometric methods were used in the analysis of eight Argonne Premium Coal Samples. Trace elements (Cr, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, La, and Ce) in coal ash were determined by energy-dispersive X-ray fluorescence spectrometry; major elements (Na, Mg, Al, Si, P, S, K, Ca,...
Trace elements in Corbicula fluminea from the San Joaquin River, California
H.V. Leland, B. C. Scudder
1990, Conference Paper, Science of the Total Environment
(i) Trace element concentrations in soft tissue of the benthic bivalve, Corbicula fluminea, from the San Joaquin River and its major tributaries were examined during the primary irrigation season in relation to the spatial variation in concentrations of major, minor and trace constituents in riverwater and sediments. (ii) Selenium concentrations...
Operation of U.S. Geological Survey unmanned digital magnetic observatories
L.R. Wilson
1990, Physics of the Earth and Planetary Interiors (59) 45-54
The precision and continuity of data recorded by unmanned digital magnetic observatories depend on the type of data acquisition equipment used and operating procedures employed. Three generations of observatory systems used by the U.S. Geological Survey are described. A table listing the frequency of component failures in the current observatory...
New geologic map of the Island of Hawaii
Edward Wolfe, Jean Morris
1990, Conference Paper, Transactions - Geothermal Resources Council
Recent geologic mapping on the Island of Hawaii is compiled in a detailed new 1:100,000-scale geologic map. The lava flows and pyroclastic deposits of each volcano are assigned to major lithostratigraphic units based on lithology and stratigraphic relations. However, the emphasis of the map is strongly chronostratigraphic. Lavas of latest...
Toxicokinetics of PAHs in Hexagenia
Guy R. Stehly, Peter F. Landrum, Mary G. Henry, C. Klemm
1990, Environmental Toxicology and Chemistry (9) 167-174
The accumulation kinetics of two waterborne polycyclic aromatic hydrocarbons (PAHs), benzo[a]pyrene (BAP) and phenanthrene (PHE), were studied in the mayfly nymph (Hexagenia limbata). The uptake clearance decreased while the bioconcentration of BAP increased with an increase in weight of the H. limbata nymph. The relationship between uptake clearance and bioconcentration for PHE was...
National contaminant biomonitoring program: Residues of organochlorine chemicals in U.S. Freshwater Fish, 1976–1984
Christopher J. Schmitt, Jim L. Zajicek, Paul H. Peterman
1990, Archives of Environmental Contamination and Toxicology (19) 748-781
The U.S. Fish and Wildlife Service periodically determines concentrations of organochlorine chemicals in freshwater fish collected from a nationwide network of stations as part of the National Contaminant Biomonitoring Program (NCBP, formerly a part of the National Pesticide Monitoring Program). From late 1984 to...
Host-parasite relationships and geographic distribution of Salmincola corpulentus (Copepoda: Lernaeopodidae) on bloater (Coregonus hoyi) stocks in Lake Huron
Charles A. Bowen, Ralph M. Stedman
1990, Canadian Journal of Zoology (68) 1988-1994
Examination of the branchial cavities of 8347 adult bloaters (Coregonus hoyi) collected from seven locations in Lake Huron for parasitic copepods yielded only the lernaeopodid Salmincola corpulentus; its distribution was limited to bloaters collected in the southern two-thirds of the lake. The infections were highest off Au Sable Point and on...
Traveltime inversion using transmitted waves of offset VSP data
Myung W. Lee
1990, Geophysics (55) 1089-1097
Estimation of layer parameters such as interval velocity, reflector depth, and dip can be formulated as a generalized linear inverse problem using observed arrival times. Based on a 2-D earth model, a computationally efficient and accurate formula is derived for traveltime inversion. This inversion method is applied to offset vertical...
Volcanic hazards in the Pacific Northwest
C.D. Miller
1990, Geoscience Canada (17) 183-187
The Cascade Range stretches from southwestern British Columbia to northern California; the Range consists of major composite volcanic centres, most of which have been active during late Pleistocene and Holocene time. In addition, thousands of smaller basaltic or basaltic-andesite volcanoes have been active during the past few million years. Flowage...
Evolution of the Tertiary La Honda basin, central California
Richard G. Stanley
1990, Conference Paper, Geology and tectonics of the central California coastal region, San Francisco to Monterey: Camarillo, Calif., American Association of Petroleum Geologists, Pacific Section Guidebook
Tertiary strata of the La Honda basin are exposed in the Santa Cruz Mountains along the central California coast south of San Francisco. The basin fill has a composite thickness of more than 14,500 m and consists of sedimentary and volcanic rocks that in places rest on granitic basement...
On graphically representing the confidence region for an unknown rotation in three dimensions
M.S. Hanna, T. Chang
1990, Computers & Geosciences (16) 163-194
In assessing the errors involved in reconstructing tectonic plate rotations, it is desirable to have confidence regions for the unknown rotation. This paper presents a method for graphing such confidence regions, which exhibits the dependence of the range of possible angles of rotation on the axis considered. Namely, the minimum...
D/H on Mars: Effects of floods, volcanism, impacts, and polar processes
M. H. Carr
1990, Icarus (87) 210-227
Water in the Martian atmosphere is 5.1 times more enriched in deuterium than terrestial water. The enrichment has been previously attributed to either a massive loss of water early in the planet's history or the presence of only a very small...
The extraordinary radar echoes from Europa, Ganymede, and Callisto: A geological perspective
S.J. Ostro, E.M. Shoemaker
1990, Icarus (85) 335-345
This outline of plausible geologic explanations for the icy Galilean satellites' radar properties takes into consideration electromagnetic scattering models for the echoes, available empirical and theoretical information about regolith formation, and ice physics. The...
Results of seismological monitoring in the Cascade Range 1962-1989: earthquakes, eruptions, avalanches and other curiosities
C.S. Weaver, R.D. Norris, C. Jonientz-Trisler
1990, Geoscience Canada (17) 158-162
Modern monitoring of seismic activity at Cascade Range volcanoes began at Longmire on Mount Rainier in 1958. Since then, there has been an expansion of the regional seismic networks in Washington, northern Oregon and northern California. Now, the Cascade Range from Lassen Peak to Mount Shasta in the south and...
Improved method for sectioning pectoral spines of catfish for age determination
Marc A. Blouin, Glenda R. Hall
1990, Journal of Freshwater Ecology (5) 489-490
A modified low-speed saw provided fast and precise sectioning of catfish pectoral spines for use in aging studies. In one hour, 10–15 spines can be sectioned, the sections mounted, and the annuli counted. Two methods commonly used to section ictalurid pectoral spines are (1) acid decalcification, followed by the...
Ground-water control of evaporite deposition
W.W. Wood, W. E. Sanford
1990, Economic Geology (85) 1226-1235
Topographically closed basins may be hydrologically open as a result of seepage losses to underlying or surrounding ground-water systems. In such cases, these losses can have a substantial control over the suite and the thicknesses of evaporite minerals formed in the basin. The ratio of ground-water outflow to inflow (flux...
Benthic invertebrate bioassays with toxic sediment and pore water
John P. Giesy, Cornell J. Rosiu, Robert L. Graney, Mary G. Henry
1990, Environmental Toxicology and Chemistry (9) 233-248
The relative sensitivities of bioassays to determine the toxicity of sediments were investigated and three methods of making the sample dilutions required to generate dose-response relationships were compared. The assays studied were: (a) Microtox®, a 15-min assay ofPhotobacterium phosphoreum bioluminescence inhibition by pore water; (b) 48-h Daphnia magnalethality test in pore water;...
Vapor-liquid phase equilibria of potassium chloride-water mixtures: Equation-of-state representation for KCl-H2O and NaCl-H2O
J.K. Hovey, Kenneth S. Pitzer, J.C. Tanger IV, J. L. Bischoff, R.J. Rosenbauer
1990, Journal of Physical Chemistry (94) 1175-1179
Measurements of isothermal vapor-liquid compositions for KCl-H2O as a function of pressure are reported. An equation of state, which was originally proposed by Pitzer and was improved and used by Tanger and Pitzer to fit the vapor-liquid coexistence surface for NaCl-H2O, has been used for representation of the KCl-H2O system...
Site 765: Sediment Lithostratigraphy
Leg 123 Shipboard Scientific Party
1990, Proceedings of the Ocean Drilling Program: Initial Reports (123) 76-94
A 935-m-thick succession of Quaternary through Lower Cretaceous sediments was recovered at Site 765 (Fig. 10). A single core of Quaternary sediment was obtained from Hole 765A; drilling terminated and a new hole was drilled in an attempt to establish the mud line. Quaternary through middle Miocene sediments were cored...
Site 765: Sedimentology
Leg 123 Shipboard Scientific Party
1990, Proceedings of the Ocean Drilling Program: Initial Reports (123) 113
Various techniques were used to decipher the sedimentation history of Site 765, including Markov chain analysis of facies transitions, XRD analysis of clay and other minerals, and multivariate analysis of smear-slide data, in addition to the standard descriptive procedures employed by the shipboard sedimentologist. This chapter presents brief summaries of...
International position statement and evaluation guidelines for artificial reefs in the Great Lakes
John E. Gannon
1990, Special Publication 90-2
The purpose of this position statement is to guide the evaluation of artificial reef proposals in the Great Lakes so that any reefs built will enhance the fisheries and recreational uses of the lakes without adversely affecting natural resources or impeding other beneficial uses. This position statement sets minimum recommended...
Digital Line Graphs from 1:2,000,000-Scale Maps
1990, Data Users Guide 3
Shorebirds and herring roe in Prince William Sound, Alaska
David W. Norton, Stanley E. Senner, Robert E. Gill Jr., Philip D. Martin, J.M. Wright, Allan K. Fukuyama
1990, American Birds (44) 367-508
No abstract available....
