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Page 4178, results 104426 - 104450

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Bedrock geology and tectonic evolution of the Wrangellia, Peninsular, and Chugach terranes along the Trans-Alaska Crustal Transect in the Chugach Mountains and southern Copper River Basin, Alaska
George Plafker, W. J. Nokleberg, J. S. Lull
1989, Journal of Geophysical Research Solid Earth (94) 4255-4295
The Trans-Alaskan Crustal Transect in the southern Copper River Basin and Chugach Mountains traverses the margins of the Peninsular and Wrangellia terranes, and the adjacent accretionary oceanic units of the Chugach terrane to the south. The southern Wrangellia terrane margin consists of a polymetamorphosed magmatic arc complex at least in...
Coprecipitation and redox reactions of manganese oxides with copper and nickel
J.D. Hem, Carol J. Lind, C. E. Roberson
1989, Geochimica et Cosmochimica Acta (53) 2811-2822
Open-system, continuous-titration experiments have been done in which a slow flux of ∼0.02 molar solution of Mn2+ chloride, nitrate, or perchlorate with Cu2+ or Ni2+ in lesser concentrations was introduced into an aerated reactor solution held at constant temperature and at constant pH by a pH-stat...
Style of extensional tectonism during rifting, Red Sea and Gulf of Aden
R. G. Bohannon
1989, Journal of African Earth Sciences (8) 589-602
Models describing the development of the Red Sea and the Gulf of Aden, prior to the present periods of sea-floor spreading, include those that use block faulting on steep normal faults, uniform diffuse shear in continental crust, simple shear on large detachment faults that cut the entire lithosphere, combinations involving...
Origin and age of the Lake Nyos maar, Cameroon
J. P. Lockwood, M. Rubin
1989, Journal of Volcanology and Geothermal Research (39) 117-124
Lake Nyos occupies a young maar crater in the Precambrian granitic terrane of northwest Cameroon. The lake is partly surrounded by poorly consolidated, ultramafic nodule-bearing pyroclastic surge deposits that were explosively ejected from the Nyos crater at the time of its formation. Radiocarbon dates show that the maar probably formed...
SO2 from episode 48A eruption, Hawaii: Sulfur dioxide emissions from the episode 48A East Rift Zone eruption of Kilauea volcano, Hawaii
R.J. Andres, P.R. Kyle, J. B. Stokes, William I. Rose Jr.
1989, Bulletin of Volcanology (52) 113-117
An SO2 flux of 1170??400 (1??) tonnes per day was measured with a correlation spectrometer (COSPEC) in October and November 1986 from the continuous, nonfountaining, basaltic East Rift Zone eruption (episode 48A) of Kilauea volcano. This flux is 5-27 times less than those of highfountaining episodes, 3-5 times greater than...
Estimating constituent loads
Timothy A. Cohn, Lewis L. DeLong, Edward J. Gilroy, Robert M. Hirsch, Deborah K. Wells
1989, Water Resources Research (25) 937-942
Several recent articles have called attention to the problem of retransformation bias, which can arise when log linear regression models are used to estimate sediment or other constituent loads. In some cases the bias can lead to underestimation of constituent loads by as much as 50%, and several procedures have...
Spreadsheet WATERSHED modeling for nonpoint-source pollution management in a Wisconsin basin
J.F. Walker, S.A. Pickard, W.C. Sonzogni
1989, Water Resources Bulletin (25) 139-147
Although several sophisticated nonpoint pollution models exist, few are available that are easy to use, cover a variety of conditions, and integrate a wide range of information to allow managers and planners to assess different control strategies. Here, a straightforward pollutant input accounting approach is presented in the form of...
Extra-pair copulation in the greater white-fronted goose
Craig R. Ely
1989, The Condor (91) 990-991
Controlled experiments and quantitative field studies with both captive and wild waterfowl (Family Anatidae) have demonstrated that extra-pair copulations (EPCs, both forced and unforced) may be a viable alternative reproductive strategy for males (Mineau and Cooke 1979; Burns et al. 1980; Cheng et al. 1982, 1983; Afron 1985; Evarts and...
Particle-borne radionuclides as tracers for sediment in the Susquehanna River and Chesapeake Bay
J.F. Donoghue, O.P. Bricker, C.R. Olsen
1989, Estuarine, Coastal and Shelf Science (29) 341-360
The Chesapeake Bay receives nearly 1 000 000 tonnes of sediment annually from its major tributary, the Susquehanna River. The pattern of deposition of this sediment affects the lifetime of the estuarine resource and the fate of any sediment-borne contaminants. Previous estimates of the extent to which Susquehanna River sediment...
An investigation of shallow ground-water quality near East Fork Poplar Creek, Oak Ridge, Tennessee
J. K. Carmichael
1989, Water-Resources Investigations Report 88-4219
Alluvial soils of the flood plain of East Fork Poplar Creek in Oak Ridge, Tennessee, are contaminated with mercury and other metals, organic compounds, and radio-nuclides originating from the Y-12 Plant, a nuclear-processing facility located within the U.S. Department of Energy 's Oak Ridge Reservation. Observation wells were installed in...
Contrasting zircon morphology and UPb systematics in peralkaline and metaluminous post-orogenic granite complexes of the Arabian Shield, Kingdom of Saudi Arabia
J.N. Aleinikoff, D. B. Stoeser
1989, Chemical Geology: Isotope Geoscience Section (79) 241-258
Uzircon ages are reported for seven metaluminous-to-peralkaline post-orogenic granites from the Late Proterozoic Arabian Shield of Saudi Arabia. Zircons from the metaluminous rocks are prismatic, with length-to-width ratios of ∼ 2–4: 1 and small pyramidal terminations. In contrast, zircons from three of...
A close-range photogrammetric technique for mapping neotectonic features in trenches
G. M. Fairer, J.W. Whitney, J. A. Coe
1989, Bulletin of the Association of Engineering Geologists (26) 521-530
Close-range photogrammetric techniques and newly available computerized plotting equipment were used to map exploratory trench walls that expose Quaternary faults in the vicinity of Yucca Mountain, Nevada. Small-scale structural, lithologic, and stratigraphic features can be rapidly mapped by the photogrammetric method. This method is more accurate and significantly more rapid...
Revised paleomagnetic pole for the Sonoma Volcanics, California
E. A. Mankinen
1989, Geophysical Research Letters (16) 1081-1084
Paleomagnetic sampling of the Miocene and Pliocene Sonoma Volcanics, northern California, was undertaken to supplement an earlier collection. Data from 25 cooling units yield positive fold and reversal tests, and a paleomagnetic pole located at 80.2°N., 069.2°E., with α95 = 6.8°. This paleopole is significantly displaced (9.6°...
Potentiometric surface of the upper Cape Fear aquifer in the central coastal plain of North Carolina, December 1986
M. D. Winner Jr., William L. Lyke, Allen R. Brockman
1989, Water-Resources Investigations Report 87-4235
Water-level measurements were made in 84 wells open to the upper Cape Fear aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of approximately 5,500 sq mi. The major feature of the potentiometric surface is the development of a large, almost circular...
Ethylene glycol (antifreeze) poisoning in a free-ranging polar bear
Steven C. Amstrup, Craig L. Gardner, Kevin C. Myers, Frederick W. Oehme
1989, Veterinary and Human Toxicology (31) 317-319
The bright, fluorescent pink-colored remains of a polar bear were found on an Alaskan island with the gravel and snow adjacent to the bear colored bright purple. Traces of fox urine and feces found nearby were also pink. The punk and purple colors were due to rhodamine B, and ethylene...
Potentiometric surface of the Peedee aquifer in the central coastal plain of North Carolina, December 1986
Allen R. Brockman, William L. Lyke, M. D. Winner Jr.
1989, Water-Resources Investigations Report 87-4236
Water level measurements were made in 37 wells open to the Peedee aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of about 4,100 square miles in the central Coastal Plain of North Carolina. The potentiometric surface of the Peedee slopes southeastward...
On inter-tidal transport equation
Ralph T. Cheng, Shizuo Feng, Xi Pangen
1989, Book chapter, Estuarine circulation
The transports of solutes, sediments, nutrients, and other tracers are fundamental to the interactive physical, chemical, and biological processes in estuaries. The characteristic time scales for most estuarine biological and chemical processes are on the order of several tidal cycles or longer. To address the long-term transport mechanism meaningfully, the...
Beyond the Kubler index
D. D. Eberl, B. Velde
1989, Clay Minerals (24) 571-577
The value of peak width at half-height for the illite 001 XRD reflection is known as the Kubler index or the illite ‘crystallinity’ index. This measurement, which has been related to the degree of metamorphism of very low-grade, pelitic rocks, is a function of at least two crystal-chemical factors: (1)...
Movements, home range, and territories of male sea otters off central California
Ronald J. Jameson
1989, Marine Mammal Science (5) 159-172
Sixty male sea otters (Enhydra lutris) were tagged on the rear flippers with colored tags. Of these, 46 (77%) were resighted. Movements of 127 km were documented for adults and 187 km for subadults. Adults maintained breeding territories that averaged 40.3 ha (n= 10, SE = 4.0). They returned to...
Selected ground-water data, Chester County, Pennsylvania
Ronald A. Sloto
1989, Open-File Report 87-217
Hydrologic data for Chester County, Pennsylvania are given for 3,010 wells and 32 springs. Water levels are given for 48 observation wells measured monthly during 1936-86. Chemical analyses of ground water are given for major ions, physical properties, nutrients, metals and other trace constituents, volatile organic compounds, acid organic compounds,...