Terranes of the Klamath Mountains, California and Oregon, in Tectonic evolution of northern California
W. P. Irwin
1989, Book chapter, Tectonic evolution of northern California: Sausalito to Yosemite National Park, California, June 28-July 7, 1989
No abstract available....
Sedimentology of the Upper Devonian to Lower Mississippian(?) Kanayut Conglomerate in the vicinity of the Trans-Alaska Pipeline, Brooks Range, Alaska
Thomas E. Moore, T. H. Nilsen, W. P. Brosge
C. G. Mull, K.E. Adams, editor(s)
1989, Book chapter, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Alaska Division of Geological and Geophysical Survey Guidebook
No abstract available....
Boron isotope evidence for the involvement of non-marine evaporites in the origin of the Broken Hill ore deposits
J. F. Slack, M. R. Palmer, B.P.J. Stevens
1989, Nature (342) 913-916
Identifying the palaeogeographic setting and mode of origin of stratabound ore deposits can be difficult in high-grade metamorphic terranes, where the effects of metamorphism may obscure the nature of the protoliths. Here we report boron isotope data for tourmalines from the early Proterozoic Broken Hill block, in Australia, which hosts...
Voyager 2 at Neptune: Imaging science results
B.A. Smith, Laurence A. Soderblom, D. Banfield, C. Barnet, A.T. Basilevsky, R.F. Beebe, K. Bollinger, J. M. Boyce, A. Brahic, G.A. Briggs, R. H. Brown, C. Chyba, S.A. Collins, T. Colvin, A.F. Cook II, D. Crisp, S.K. Croft, D. Cruikshank, J.N. Cuzzi, G. E. Danielson, M. E. Davies, E. DeJong, L. Dones, D. Godfrey, J. Goguen, I. Grenier, V. Haemmerle, H. Hammel, C.J. Hansen, C.P. Helfenstein, C. Howell, G.E. Hunt, A.P. Ingersoll, T. V. Johnson, J. Kargel, Randolph L. Kirk, D.I. Kuehn, S. Limaye, H. Masursky, A. McEwen, D. Morrison, T. Owen, W. Owen, J. B. Pollack, C.C. Porco, K. Rages, P. Rogers, D. Rudy, C. Sagan, J. Schwartz, E.M. Shoemaker, M. Showalter, B. Sicardy, D. Simonelli, J. Spencer, L.A. Sromovsky, C. Stoker, R.G. Strom, V.E. Suomi, S.P. Synott, R.J. Terrile, P. Thomas, W.R. Thompson, A. Verbiscer, J. Veverka
1989, Science (246) 1422-1449
Voyager 2 images of Neptune reveal a windy planet characterized by bright clouds of methane ice suspended in an exceptionally clear atmosphere above a lower deck of hydrogen sulfide or ammonia ices. Neptune's atmosphere is dominated by a large anticyclonic storm system that has been named the Great Dark Spot...
Prodigious submarine landslides on the Hawaiian Ridge
James G. Moore, David A. Clague, R. T. Holcomb, Peter W. Lipman, William R. Normark, Michael E. Torresan
1989, Journal of Geophysical Research B: Solid Earth (94) 17465-17484
The extensive area covered by major submarine mass wasting deposits on or near the Hawaiian Ridge has been delimited by systematic mapping of the Hawaiian exclusive economic zone using the side‐looking sonar system GLORIA. These surveys show that slumps and debris avalanche deposits are exposed over about 100,000 km2 of the...
Two new species of South American Centrolenella (Anura: Centrolenidae) related to C. mariae
Glenn Flores, Roy W. McDiarmid
1989, Herpetologica (45) 401-411
Two new Centrolenella are described, C. azulae from the Cordillera Azul of Perú, and C. puyoensis from the Amazonian slopes of the Ecuadorian Andes. Centrolenella azulae is distinguished by its moderately large size, the presence of vomerine teeth, a snout truncate in dorsal view and slightly protruding in profile,...
Duration of immobility in salamanders, genus Plethodon (Caudata: Plethodontidae)
C. Kenneth Dodd Jr.
1989, Herpetologica (45) 467-473
Immobility is a potentially important antipredator behavior in salamanders, especially for those posessing noxious skin secretions. The duration of immobility in 15 species of terrestrial salamanders (Plethodon) varied among species. Most salamanders (78.8%) became immobile when initially contacted under field conditions, and remained immobile from 1-180 s....
Disease-related aspects of conserving the endangered Hawaiian Crow
C. David Jenkins, Stanley A. Temple, Charles van Riper, Wallace R. Hansen
1989, The ICBP Technical Publication (10) 77-87
No abstract available....
Comparison of on-site and laboratory toxicity tests: derivation of site-specific criteria for un-ionized ammonia in a Colorado transitional stream
Del Wayne R. Nimmo, Denise Link, Loys P. Parrish, Glenn J. Rodriguez, William Wuerthele, Patrick H. Davies
1989, Environmental Toxicology and Chemistry (8) 1177-1189
Acute tests with fathead minnows (Pimephales prornelas Rafinesque), johnny darters (Etheostoma nigrum Rafinesque), white suckers (Catostomus commersoni Lacépède) and acute and chronic tests with Ceriodaphnia dubia were conducted to evaluate whether characteristics of the St. Vrain River in Colorado would ameliorate or enhance toxicity of un-ionized ammonia compared to laboratory...
Growth and fat-body cycles in feral populations of the African clawed frog, Xenopus laevis (Pipidae), in California with comments on reproduction
Michael J. McCoid, Thomas H. Fritts
1989, Southwestern Naturalist (34) 499-505
Feral populations of the African clawed frog (Xenopus laevis) exist in several areas of southern California. By following the first cohort of progeny produced by African clawed frogs at a recently colonized site, data on the growth rates and age at first maturity were obtained in field conditions....
Comparison: US P-61 and Delft sediment samplers
Joseph P. Beverage, David T. Williams
1989, Journal of Hydraulic Engineering (115) 1702-1706
The Delft Bottle (DB) is a flow-through device designed by the Delft Hydraulic Laboratory (DHL), The Netherlands, to sample sand-sized sediment suspended in streams. The US P-61 sampler was designed by the Federal Interagency Sedimentation Project (FISP) at the St. Anthony Falls Hydraulic Laboratory, Minneapolis, Minnesota, to collect suspended sediment...
Analysis of fish bile with HPLC — fluorescence to determine environmental exposure to benzo(a)pyrene
Eric P. Johnston, Paul C. Baumann
1989, Hydrobiologia (188) 561-566
Brown bullhead from the Black River, Ohio, have a high incidence of liver neoplasia which is associated with elevated concentrations of polynuclear aromatic hydrocarbons (PAHs) in the sediment. We evaluated the use of biliary concentrations of benzo(a)pyrene [B(a)P] equivalents as a means for determining PAH exposure. Bile was collected from...
History of the Federal Inter-Agency Sedimentation Project
J. V. Skinner
1989, Conference Paper, Proceedings of the Sediment Transport Modeling International Symposium
No abstract available....
Effects of ground-water withdrawals for irrigation on the quality of the Straight River, north-central Minnesota
J. R. Stark, D. R. Zwilling
1989, Open-File Report 89-252
No abstract available....
Comparison of aquifer storage coefficients computed using anisotropic and isotropic analytical models
Vicente Quinones-Aponte
1989, Conference Paper, Proceedings of the Recent Advances in Ground-Water Hydrology, American Institute of Hydrology
Model B sediment concentration gage: Factors influencing its readings and a formula for correcting its errors in measurement and analysis of sediment load in streams
J. V. Skinner
1989, Report JJ
No abstract available....
Crustal structure of the Chugach Mountains, southern Alaska: A study of peg‐leg multiples from a low‐velocity zone
Ernst Flueh, Walter D. Mooney, Gary S. Fuis, Elizabeth L. Ambos
1989, Journal of Geophysical Research B: Solid Earth (94) 16023-16035
A seismic refraction profile recorded along the geologic strike of the Chugach Mountains in southern Alaska shows three upper crustal high‐velocity layers (6.9, 7.2, and 7.6 km/s) and a unique pattern of strongly focussed echelon arrivals to a distance of 225 km. The group velocity of the...
Dynamic pore-pressure fluctuations in rapidly shearing granular materials
Richard M. Iverson, Richard G. LaHusen
1989, Science (246) 796-799
Results from two types of experiments show that intergranular pore pressures fluctuated dynamically during rapid, steady shear deformation of water-saturated granular materials. During some fluctuations, the pore water locally supported all normal and shear stresses, while grain-contact stresses transiently fell to zero. Fluctuations also propagated outward from the shear zone;...
The zebra mussel, Dreissena polymorpha (Pallas, 1771), in North America: impact on raw water users
Ronald W. Griffiths, William P. Kovalak, Donald W. Schloesser
1989, Report, Service water system problems affecting safety-related equipment
The zebra mussel, Dreissena polymorpha (Pallas), is a small mollusc native to the Black, Caspian, and Azov Seas that was discovered in Lake Erie of the Laurentian Great Lakes of North America in 1988. Its presence there raises immediate concerns for users of raw water because it can become...
Hydrologic and water-quality characteristics of a Wetland receiving wastewater effluent in St. Joseph, Minnesota
Rob G. Brown, James R. Stark
1989, Wetlands (9) 191-206
Hydrologic and water-quality characteristics were determined for a wetland being used for tertiary treatment of wastewater in St. Joseph, Minnesota. The wetland consists of spruce-tamarack fen and a cattail marsh, with the wastewater being discharged into the fen, and the fen draining into the marsh. The wetland is underlain by...
Abrupt Mousterian/Aurignacian boundary at c. 40 ka bp: Accelerator 14C dates from l'Arbreda Cave (Catalunya, Spain)
James L. Bischoff, Narcis Soler, Ramon Julia
1989, Journal of Archaeological Science (16) 563-576
The cultural transition from Mousterian to Aurignacian is abrupt at l'Arbreda Cave and occurs within a homogeneous sedimentary unit with no visible lithologic changes. Fragments of milligram-size charcoal were collected immediately above and below the cultural boundary for radiocarbon dating by accelerator. Four charcoal fragments from the lowest basal Aurignacian...
Trends in wintering canvasback populations at Catahoula Lake, Louisiana
Dennis W. Woolington, James W. Emfinger
1989, Conference Paper, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies
Aerial survey data (1968-1989) and water gauge readings (1958-1989) were examined to detennine trends in and relationships between canvasback (Aythya valisineria) populations and water levels at Catahoula Lake, Louisiana. Wintering canvasback populations at Catahoula Lake have increased over the past 21 years. A peak population estimate of 78,000 canvasbacks was...
Studies of contaminant and water quality effects on striped bass prolarvae and yearlings in the Potomac River and upper Chesapeake Bay in 1988
L. W. Hall Jr., M.C. Ziegenfuss, S. J. Bushong, M.A. Unger, R. L. Herman
1989, Transactions of the American Fisheries Society (118) 619-629
Simultaneous on‐site and in situ studies of survival of prolarval and yearling striped bass Morone saxatilis were conducted in the Potomac River during the 1988 spawning season. Various water quality and contaminant conditions were monitored during these experiments. In situ experiments on yearlings and monitoring of water quality and contaminants were also...
Planktonic benthonic foraminiferal ratios: Modern patterns and Tertiary applicability
Thomas G. Gibson
1989, Marine Micropaleontology (15) 29-52
The abundance of planktonic specimens in foraminiferal assemblages was determined in numerous bottom samples from inner neritic to deep oceanic depths along the Atlantic margin of the northeastern United States. The results augment previous studies in other areas that have...
Lonchorhina aurita
Susanne Lassieur, Don E. Wilson
1989, Mammalian Species (347) 1-4
No abstract available....
