Economic Losses and Fatalities Due to Landslides
Robert L. Schuster, Robert W. Fleming
1986, Bulletin of the Association of Engineering Geologists (23) 11-28
Annual losses in the United States, Japan, Italy, and India have been estimated at 1 billion or more each. During the period 1971-74, nearly 600 people per year were killed by landslides worldwide; about 90 percent of these deaths occurred in the Circum-Pacific region. From 1967-82, 150 people per year...
Genesis of the Spar Lake strata-bound copper-silver deposit, Montana: Part I. Controls inherited from sedimentation and preore diagenesis
T. S. Hayes, M.T. Einaudi
1986, Economic Geology (81) 1899-1931
Mineable zones of the Spar Lake deposit occur where argentiferous copper sulfides and native silver formed cements and replaced certain earlier cements and clasts in the gently dipping middle quartzite beds of the upper member of the Revett Formation, middle Proterozoic Belt Supergroup. The copper sulfides and native silver are...
Approximating edges of source bodies from magnetic or gravity anomalies
R.J. Blakely, R.W. Simpson
1986, Geophysics (51) 1494-1498
Cordell and Grauch (1982, 1985) discussed a technique to estimate the location of abrupt lateral changes in magnetization or mass density of upper crustal rocks. The final step of their procedure is to identify maxima on a contoured map of horizontal gradient magnitudes. We attempt to automate their final step....
RELATION BETWEEN SURFACE-WATER QUALITY AND THE COMPOSITION OF COAL IN PIKE COUNTY, KENTUCKY.
Jay Kiesler
1986, Conference Paper, University of Kentucky, Office of Engineering Services, (Bulletin) UKY BU
The quality of surface water in Pike County, Kentucky, seems to reflect the composition of coals in the county. Groundwater acquires mineral concentration characteristics of the rocks through which it moves. When groundwater is discharged to streams the mineral concentrations in streams, especially during low flow periods, are characteristic of...
Obstacles facing the venus radar mapper - The implications of gestalt formation in stereo-radargrammetry
R.L. Wildey
1986, Earth, Moon and Planets (35) 47-54
The question of adapting to radar images the existing hardware that form topographic maps through stereo-photogrammetric models, is examined in principle. Such hardware utilizes a human/ computer hybrid. Although the problem of brightness differentials between corresponding landmarks can be dealt with pseudo-photoclinometrically, the main problem is whether the perspective in...
Snow chemistry of the Cascade-Sierra Nevada Mountains
L.B. Laird, Howard E. Taylor, V. C. Kennedy
1986, Environmental Science & Technology (20) 275-290
This investigation assesses geographic variations in atmospheric deposition in Washington, Oregon, and California using snow cores from the Cascade-Sierra Nevada Mountains, collected from late February to mid-March 1983. A statistical analysis of the analytical and sampling precision was made. The snowpack in the higher Cascades and Sierra Nevada is not...
HYDRODYNAMIC SIMULATION OF THE UPPER POTOMAC ESTUARY.
Raymond W. Schaffranck
1986, Conference Paper
Hydrodynamics of the upper extent of the Potomac Estuary between Indian Head and Morgantown, Md. , are simulated using a two-dimensional model. The model computes water-surface elevations and depth-averaged velocities by numerically integrating finite-difference forms of the equations of mass and momentum conservation using the alternating direction implicit method. The...
Determination of Ca, Mg, Na, Cd, Cu, Fe, K, Li and Zn in acid mine and reference water samples by inductively coupled plasma atomic fluorescence spectrometry
R. F. Sanzolone, A. L. Meier
1986, The Analyst (111) 645-649
An inductively coupled plasma atomic fluorescence spectrometric (ICP-AFS) method was used for the determination of nine elements in natural water. Reference and acid mine water samples were analysed by this method to demonstrate its usefulness for hydrogeochemical exploration. The elements were determined in two groups based on the compatibility of...
A field guide to valuable underwater aquatic plants of the Great Lakes
Donald W. Schloesser
1986, Report
Underwater plants are a valuable part of the Great Lakes ecosystem, providing food and shelter for aquatic animals. Aquatic plants also help stabilize sediments, thereby reducing shoreline erosion. Annual fall die-offs of underwater plants provide food and shelter for overwintering small aquatic animals such as insects, snails, and freshwater shrimp. In...
Analysis of forest structure using thematic mapper simulator data
D. L. Peterson, W.E. Westman, N.L. Stephenson, V.G. Ambrosia, J.A. Brass, M.A. Spanner
1986, Book chapter, IEEE Transactions on Geoscience and Remote Sensing: GE-24
No abstract available at this time...
Introduction
M.M. Smart, S.J. Lubinski, R. A. Schnick
M.M. Smart, S.J. Lubinski, R. A. Schnick, editor(s)
1986, Book chapter, Ecological perspectives of the upper Mississippi River
Abstract not submitted to date...
Evaluation of waterfowl production at Union Slough National Wildlife Refuge
J. P. Fleskes
1986, Thesis
No abstract available at this time...
An annotated checklist of mammals of Point Reyes National Seashore
Gary M. Fellers, John Dell’Osso
1986, Book
No abstract available at this time...
Authors' reply
M.M. Reddy, H.C. Claassen
1986, Atmospheric Environment (20) 412-413
No abstract available....
Authors' reply
R.M. Hirsch, N.E. Peters
1986, Atmospheric Environment (20) 230-232
No abstract available....
Use of detrended correspondence analysis in evaluating factors controlling species composition of periphyton
Harry V. Leland, James L. Carter
Isom Billy G., editor(s)
1986, Book chapter, Rationale for sampling and interpretation of biological data in the assessment of freshwater ecosystems
Detrended correspondence analysis (DCA) was evaluated for its usefulness in elucidating relationships among samples and among species of periphyton in an oligotrophic stream, and for its effectiveness in displaying major gradients where an experimental gradient (copper) affecting species composition was imposed. It was highly sensitive to differences among samples and...
Paleomagnetism and K-Ar ages of volcanic rocks from Long Valley caldera, California
Edward A. Mankinen, C. Sherman Gromme, G. Brent Dalrymple, Marvin A. Lanphere, Roy A. Bailey
1986, Journal of Geophysical Research B: Solid Earth (91) 633-652
Paleomagnetic measurements and K‐Ar age determinations on volcanic rocks from Long Valley caldera, California, have enabled further refinement of eruptive activity within this large silicic volcanic center. K‐Ar age determinations show that postcaldera volcanic eruptions began 0.73 m.y. ago and continued periodically until about 50,000 years ago. The eruptions were...
Levels of time information in weathering measurements, with examples from weathering rinds on volcanic clasts in the Western United States
Steven M. Coleman, David P. Dethier
Steven M. Coleman, David P. Dethier, editor(s)
1986, Book chapter, Rates of chemical weathering of rocks and minerals
No abstract available....
Rates of chemical weathering of rocks and minerals
Steven M. Colman, David P. Dethier, editor(s)
1986, Book
Researchers in geomorphology, geochemistry, quaternary geology, soil science, and mineralogy will welcome this volume, the first to focus exclusively on rates of silicate chemical weathering. Consisting largely of previously unpublished data from six countries, the volume examines the latest experimental, modelling, and field results.New information is presented on topics of...
Relationship of grade, tonnage, and basement lithology in volcanic-hosted epithermal precious-and base-metal quartz-adularia-type districts
D.L. Mosier, Donald A. Singer, T. Sato, N.J. Page
1986, Mining Geology (36)
Examination of grades, tonnages, and basement rocks for 88 epithermal precious- and base-metal quartz-adularia-type districts in North, Central, and South America, and Japan reveals that the type of basement rock below the mineralized veins is useful for predicting grade and size of deposits. Epithermal districts overlying basement with salt and...
Susceptibility of salmonids to furunculosis: Differences between serum and mucus responses against Aeromonas salmonicida
R. C. Cipriano, Charles M. Heartwell III
1986, Transactions of the American Fisheries Society (115) 83-88
At the Reeds Creek (West Virginia) state hatchery, mortality from enzootic furunculosis is most severe among brown trout Salmo trutta, intermediate in brook trout Salvelinus fontinalis, and virtually nonexistent in rainbow trout Salmo gairdneri. In each species, survivors of epizootics had developed similar levels of protective antibodies in their sera...
Paleomagnetism of the Tertiary Clarno Formation of central Oregon and its significance for the tectonic history of the Pacific Northwest
C. Sherman Gromme, Myrl E. Beck Jr., Ray E. Wells, David C. Engebretson
1986, Journal of Geophysical Research B: Solid Earth (91) 14089-14103
The Clarno Formation, a mostly Eocene and partly early Oligocene sequence of andesitic lavas and volcaniclastic rocks, is the oldest Tertiary formation exposed in north central Oregon. Remanent magnetization directions at 46 sites in the lavas provide a paleomagnetic pole at 84°N, 278°E with a 95% confidence cone of 7°....
A sublittoral population of Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) in central California
Glenn R. VanBlaricom, Daniel C. Reed, Christopher Harrold, James L. Bodkin
1986, Bulletin of the Southern California Academy of Sciences (85) 120-122
Published distributional records for the stipitate kelp Pleurophycus gardneri Setchell and Saunders 1900 (Phaeophyceae: Laminariaceae) indicae a geographic range from Montague Island (59°58’N, 147°22W), Alaska to Fort Bragg (39°27’N, 123°47’W), California (Druehl 1969, 1970; Kjeldsen 1972). P. gardneri is found primarily in rocky intertidal and shallow subtidal locations (Scagel 1967;...
Use of spawner recruit relations to evaluate the effect of degraded environment and increased fishing on the abundance of fall run Chinook in several California streams
R.R. Reisenbichler
1986, Thesis
No abstract available ...
Fish assemblages in Macrocystis and Nereocystis kelp forests off Central California
James L. Bodkin
1986, Fishery Bulletin (84) 799-808
The abundance and species composition of conspicuous fishes were compared within two canopy forming kelp forests (giant kelp, Macrocystis pyrifera, and bull kelp, Nereocystis luetkeana) in Central California. The primary investigative method was a subtidal belt transect, in which visual observation was used. The species composition of fish assemblages in the...
