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Page 4571, results 114251 - 114275

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Sensitive strata in Bootlegger Cove Formation
Harold W. Olsen
1989, Journal of Geotechnical Engineering (115) 1239-1251
Sensitivity magnitudes are interpreted from remolded strength values in recent subsurface geologic, geotechnical, and geochemical data from the Bootlegger Cove Formation adjacent to the Turnagain Heights Landslide. The results show that strata composed of highly sensitive clays occur in both the middle and lower zones of the formation, and that...
Mineralogy and paragenesis of the McAllister Sn-Ta-bearing pegmatite, Coosa County, Alabama
Eugene E. Foord, Robert B. Cook
1989, Canadian Mineralogist (27) 93-105
The McAllister Sn-Ta deposit (Alabama) is localized in a complex pegmatite that contains large zones of mineralized late-stage replacement-type saccharoidal albite and nearly monomineralic muscovite 'greisen-like' pipes. The dyke is at least 450 m long and averages approximately 9 m in thickness. At least two 'greisen-like' pipes, as much as...
Bone characteristics and metal concentrations in white suckers (Catostomus commersoni) from one neutral and three acidified lakes in Maine
Steven J. Hamilton, Terry A. Haines
1989, Canadian Journal of Fisheries and Aquatic Sciences (46) 440-446
The bone characteristics of white suckers, Catostomus commersoni, from four lakes in Maine were studied in relation to lake water quality and metal concentrations in fish. Green Lake had a neutral pH, high buffering capacity, and low aluminum concentrations, whereas the other three lakes had low pH, low buffering capacity,...
Acute toxicity of selected herbicides and surfactants to larvae of the midge Chironomus riparius
Kevin J. Buhl, Neil L. Faerber
1989, Archives of Environmental Contamination and Toxicology (18) 530-536
The acute toxicities of eight commercial herbicides and two surfactants to early fourth instar larvae of the midgeChironomus riparius were determined under static conditions. The formulated herbicides tested were Eradicane® (EPTC), Fargo® (triallate), Lasso® (alachlor), ME4 Brominal® (bromoxynil), Ramrod® (propachlor), Rodeo® (glyphosate), Sencor®(metribuzin), and Sutan (+)® (butylate); the...
A system for reconstituting special water qualities for use in chronic toxicity studies
Steven J. Hamilton, Neil L. Faerber, Kevin J. Buhl
1989, Water Research (23) 159-165
A water treatment system and procedure are described that are designed for preparing large quantities of reconstituted water with specific chemical and physical characteristics for use in chronic toxicity studies with fish and invertebrates. Water treatment units produce high-purity water in large quantities for storage in high-density cross-linked polyethylene tanks,...
Distribution and bioaccumulation of selenium in aquatic microcosms
John M. Besser, James N. Huckins, Edward E. Little, Thomas W. La Point
1989, Environmental Pollution (62) 1-12
Closed-system microcosms were used to study factors affecting the fate of selenium (Se) in aquatic systems. Distribution and bioaccumulation of Se varied among sediment types and Se species. A mixture of dissolved 75Se species (selenate, selenite and selenomethionine) was sorbed more rapidly to fine-textured, highly organic pond sediments than to...
Comparison of several analytical methods for the determination of tin in geochemical samples as a function of tin speciation
J. S. Kane, J.R. Evans, J.C. Jackson
1989, Chemical Geology (78) 1-14
Accurate and precise determinations of tin in geological materials are needed for fundamental studies of tin geochemistry, and for tin prospecting purposes. Achieving the required accuracy is difficult because of the different matrices in which Sn can occur (i.e. sulfides, silicates and cassiterite), and because of the variability of literature...
Remote characterization of marine bird habitats with satellite imagery
J. Christopher Haney
1989, Colonial Waterbirds (12) 67-77
Remote sensing techniques such as radar altimetry, synthetic aperture radar, coastal zone color scanning, and infrared radiometry provide effective, instantaneous, and relatively inexpensive means for characterizing critical habitats of marine birds. In order to make optimal use of satellite-derived data, the rationale for marine habitat classification is presented, and advantages...
Geology and K-Ar geochronology of the Paradise Peak Mine and the relationship of pre-Basin and Range extension to Early Miocene precious metal mineralization in west-central Nevada
D. A. John, R.E. Thomason, E.H. McKee
1989, Economic Geology (84) 631-649
The Paradise Peak mine is a major gold-silver-mercury deposit located in the southwestern part of the Paradise Range near the eastern edge of the Walker Lane in the western Great Basin, Nevada. The Tertiary volcanic rocks of the area can be divided into...
Undiscovered lode tin resources of the Seward Peninsula, Alaska
B.L. Reed, W. D. Menzie, M. McDermott, D. H. Root, W. Scott, L.J. Drew
1989, Economic Geology (84) 1936-1947
The United States is a net importer of many important minerals, including tin. Consumption of primary tin in the United States is about 36,000 metric tons per year. Identified U.S. tin resources consist of about 40,000 metric tons. Although such figures provide insight about vulnerability to supply disruptions in the...
An approach to the field study of hydraulic gradients in variable-salinity ground water
J.J. Hickey
1989, Ground Water (27) 531-539
A field study approach is proposed for reliably estimating hydraulic gradients in subregions within a region of variable-salinity ground water. It is based upon Hubbert's concept about the kind of density distributions that are required for ground water to have a potential. The approach consists of dividing a region of...
Water content dependence of trapped air in two soils
David A. Stonestrom, Jacob Rubin
1989, Water Resources Research (25) 1947-1958
An improved air pycnometer method was used to examine the water content dependence of trapped-air volumes in two repacked, nonswelling soils. Trapped-air volumes were determined at a series of hydrostatic equilibrium stages which were attained during water pressure-controlled wetting and drying cycles over a range of 0 to −10 kPa...
The Resurrection Peninsula ophiolite
Steven W. Nelson, Marti L. Miller, Julie A. Dumoulin
Steven W. Nelson, Thomas D. Hamilton, editor(s)
1989, Book chapter, Guide to the ceology of the Resurrection Bay - Eastern Kenai Fjords area
The Resurrection Peninsula forms the east side of Resurrection Bay (fig. 3). Relief ranges from 437 m (1,434 ft) at the southern end of the peninsula to more than 1,463 m (4,800 ft) opposite the head of the bay. All rock units composing the informally named Resurrection Peninsula ophiolite of...
The effects of volcanic ash on the maceral and chemical composition of the C coal bed, Emery Coal Field, Utah
Sharon S. Crowley, R.W. Stanton, Thomas A. Ryer
1989, Organic Geochemistry (14) 315-331
Volcanic ash which fell in the peat swamp that formed the Upper Cretaceous C coal bed (Ferron Sandstone Member of the Mancos Shale, Utah) produced semi-impermeable layers that caused the ponding of surface waters. Coal samples from directly above tonsteins (altered volcanic ash partings) are enriched in desmocollinite, telinite, and...
Effect of rearing density on poststocking survival of lake trout in Lake Ontario
Joseph H. Elrod, David E. Ostergaard, Clifford P. Schneider
1989, Progressive Fish-Culturist (51) 189-193
Six paired lots of yearling lake trout (Salvelinus namaycush) reared at densities of 41,000 and 51,000 fish per raceway during their last 9 months in the hatchery were stocked in Lake Ontario. Poststocking survival of the high-density (HD) and low-density (LD) fish was not different for the 1982 year-class. However,...
Acute gastric dilatation and volvulus in a free-living polar bear
Steven C. Amstrup, Carol A. Nielsen
1989, Journal of Wildlife Diseases (25) 601-604
A large, adult male polar bear (Ursus maritimus) was found dead on a barrier island north of Prudhoe Bay, Alaska (USA), in June 1987. There were no external signs of trauma. A twisted distended stomach, distinctive parenchymal and fascial congestion, and significant difficulty in repositioning the...
California's potential volcanic hazards
P. Jorgenson
1989, Earthquakes & Volcanoes (USGS) (21) 96-100
This is a summary of "Potential Hazards from Future Volcanic Eruptions in California' (USGS Bulletin No. 1847: price $4.75). The chief areas of danger are Lassen Peak, Mount Shasta and Medicine Lake Highland in the north; Clear Lake, Mono Lake and Long Valley in the centre; and Owen's River-Death Valley,...
Hydrologic effects on water level changes associated with episodic fault creep near Parkfield, California
E.A. Roeloffs, S.S. Burford, F. S. Riley, A.W. Records
1989, Journal of Geophysical Research Solid Earth (94) 12387-12402
As part of the Parkfield, California, earthquake prediction experiment, water level is monitored in a well 460 m from the main trace of the San Andreas fault on Middle Mountain, in the preparation zone of the anticipated Parkfield earthquake. The well configuration allows water level to be monitored in two...
Structural analysis of the southern Peninsular, southern Wrangellia, and northern Chugach terranes along the Trans-Alaska Crustal Transect, northern Chugach Mountains, Alaska
W. J. Nokleberg, George Plafker, J. S. Lull, W. K. Wallace, G. R. Winkler
1989, Journal of Geophysical Research Solid Earth (94) 4297-4320
Structural and tectonic analysis of the southern Peninsular, southern Wrangellia, and northern Chugach terranes, along the Trans-Alaska Crustal Transect in the northern Chugach Mountains documents a long succession of Early Jurassic through Cenozoic deformational events. The deformational events are generally characterized by distinctive structural fabrics and metamorphisms. Most of the...