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Page 4044, results 101076 - 101100

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Composition and origin of hydrothermal ironstones from central Pacific seamounts
J.R. Hein, Y. Hsueh-Wen, S.H. Gunn, A. E. Gibbs, W. Chung-ho
1994, Geochimica et Cosmochimica Acta (58) 179-189
Ironstones recovered from five Late Cretaceous seamounts in the central Pacific region probably formed during late-stage edifice-building volcanism. Ironstones are dense and compact with the appearance of brown chert. The ironstones are characterized by a goethite mineralogy with FeOOH contents up to 88%, extreme fractionation of Fe and Mn, low...
Bioconcentration of 5,5′,6 -trichlorobiphenyl and pentachlorophenol in the midge, Chironomus riparius, as measured by a pharmacokinetic model
M.J. Lydy, W. L. Hayton, A.E. Staubus, S.W. Fisher
1994, Archives of Environmental Contamination and Toxicology (26) 251-256
A two compartment pharmacokinetic model was developed which describes the uptake and elimination of 5,5′,6-trichlorobiphenyl (TCB) and pentachlorophenol (PCP) in the midge, Chironomus riparius. C. riparius were exposed to nominal TCB (2 μg L−1) and PCP (9 μg L−1) concentrations during a 16 h static uptake phase. Depuration was determined over approximately...
Origin and evolution of the Seattle Fault and Seattle Basin, Washington
S. Y. Johnson, C. J. Potter, J.M. Armentrout
1994, Geology (22) 71-74
Analysis of seismic reflection data reveals that the Seattle basin (Washington) is markedly asymmetric and consists of ∼9-10 km of Eocene and younger deposits. The basin began as a discrete geologic element in the late Eocene (∼40 Ma), the result of a reorganization...
Design of Manning's-roughness-coefficient study in New York State
William F. Coon
1994, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Field-collected hydraulic data can be used to compute roughness coefficients for channels with different hydraulic characteristics. Suggested criteria for the design of a roughness-coefficient study include: (1) location of the study reach close to an established streamflow-monitoring site with a stable high-flow stage-to-discharge relation; (2) uniform hydraulic conditions within, and...
Relationships between data from Rock-Eval pyrolysis and proximate, ultimate, petrographic, and physical analyses of 142 diverse U.S. coal samples
Neely Bostick, Ted A. Daws
1994, Organic Geochemistry (21) 35-49
Basic research on coal and oil shale led to automated pyrolysis analysis of petroleum source rocks; most widely used is the Rock-Eval equipment. In order to interpret Rock-Eval analyses in relation to traditional coal data, we analyzed 142 commercial coals with diverse rank, age, maceral and sulfur contents, for most...
Water resources data, Connecticut water year 1993
B.S. Davies III, J.R. Bohr, B.W. Hunter
1994, Water Data Report CT-93-1
The Water Resources Division of the U.S. Geological Survey, in cooperation with State agencies, obtains a large amount of data pertaining to the water resources of Connecticut each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding of the water...
Alaska
Douglas V. Prose
1994, Open-File Report 94-179-D
Instrumentation, methods, and preliminary evaluation of evapotranspiration for a grassland in the Arid Lands Ecology Reserve, Benton County, Washington, May-October 1990
S. A. Tomlinson
1994, Water-Resources Investigations Report 93-4081
The report describes instrumentation, methods, and preliminary results for a study on evapo- transpiration at a grassland in Snively Basin of the Arid Lands Ecology Reserve. Instrumentation was used to collect data from May 30 to October 15, 1990. A combination of the Bowen-ratio and Penman-Monteith methods was used to...