Tectonic significance of dikes of Westerly Granite, southeastern Connecticut and southwestern Rhode Island
R. Goldsmith
1988, Northeastern Geology (10) 195-201
Undeformed Early Permian Westerly Granite dikes cut gneisses of the southeastern New England Avalon zone along coastal southeastern Connecticut and adjacent Rhode Island. Most dikes dip southward at a low angle. The Westerly dikes were emplaced in relatively warm rock penecontemporaneously with the Narragansett Pier Granite during a narrow time...
Chemical characterization and mutagenic properties of polycyclic aromatic compounds in sediment from tributaries of the Great Lakes
David L. Fabacher, Christopher J. Schmitt, John M. Besser, Michael J. Mac
1988, Environmental Toxicology and Chemistry (7) 529-543
Sediments from four inshore industrial sites and a reference site in the Great Lakes were extracted with solvents and characterized chemically for polycyclic aromatic compounds (PACs). An aqueous phase and a crude organic extract were obtained. The crude organic extract was further resolved into fractions A-2 (polycyclic aromatic hydrocarbons) and...
Effectiveness of an urban runoff detention pond - Wetlands system
E.H. Martin
1988, Journal of Environmental Engineering (114) 810-827
The effectiveness of an urban detention system, composed of a detention pond and wetlands in series, in reducing constituent loads carried in runoff was determined. The detention pond was effective in reducing loads of suspended solids and suspended metals. Suspendedphase efficiencies for solids, lead, and zinc ranged between 42 and...
Effects of sulfur dioxide emissions on stream chemistry in the western United States
K. Campbell, J.T. Turk
1988, Water Resources Research (24) 871-878
A 20-year record of water chemistry for seven headwater streams in the Rocky Mountain region of the western United States is compared to estimates of local and regional sulfur dioxide emissions for the same period. Emissions from smelters in the region comprise a significant part of sulfur dioxide emissions for...
Compilation of hydrologic data for the Edwards Aquifer, San Antonio area, Texas, 1987, with 1934-87 summary
G.M. Nalley, P.L. Rettman
1988, Edwards Underground Water District Bulletin 47
No abstract available....
Relationships of phytomacrofauna to surface area in naturally occurring macrophyte stands
Charles L. Brown, Thomas P. Poe, John R. P. French III, Donald W. Schloesser
1988, Journal of the North American Benthological Society (7) 129-139
Most studies of the relationships between freshwater macrophytes and phytomacrofauna, or the macroinvertebrates associated with the macrophytes, have been based on individual plant collections or samples from monotypic plant stands. We describe the phytomacrofauna assemblages within naturally occurring, taxonomically mixed stands, and consider how macrophyte surface area and plant...
Calibration of water-velocity meters
William R. Kaehrle, James E. Bowie
1988, Conference Paper
The U.S. Geological Survey, Department of the Interior, as part of its responsibility to appraise the quantity of water resources in the United States, maintains facilities for the calibration of water-velocity meters at the Gulf Coast Hydroscience Center's Hydraulic Laboratory Facility, NSTL, Mississippi. These meters are used in hydrologic studies...
On seismically induced pore pressure and settlement
Albert T.F. Chen
1988, Conference Paper, Geotechnical Special Publication
Two different approaches are used to estimate pore pressures and settlement in a 50-ft (15.2-m) sand deposit subjected to a variety of earthquake loadings. Although the two approaches seem consistent in predicting the occurrence of liquefaction, the results show that they are quite divergent in estimating pore-pressure build-ups and magnitude...
Some revisions to the stratigraphy and structure of the Connecticut Valley trough, eastern Vermont
Norman L. Hatch Jr.
1988, American Journal of Science (288) 1041-1059
No abstract available....
Integrating spatial and frequency information in the search for kuroko deposits of the Hokuroku District, Japan
Donald A. Singer, Ryoichi Kouda
1988, Economic Geology (83) 18-29
A new method (FINDER) that uses the area of influence and Bayesian statistics to aid in selection of target areas on the basis of one or more variables and multiple observations was tested with drill hole data. A previously defined bimodal distribution of Na 2 O with the low sodium group confined...
Microbial oxidation of pyrrhotites in coal chars
K.W. Miller, J.B. Risatti
1988, Fuel (67) 1150-1154
The ability of Thiobacillus ferrooxidans to oxidize pyrrhotite minerals occurring in coal chars was investigated, to evaluate the feasibility of microbial char desulphurization. Bio-oxidation of pyrrhotites in chars produced by two different processes was demonstrated conclusively. Microbial removal of sulphur from a char and its parent coal proceeded at the rate of...
Geologic evidence for a magma chamber beneath Newberry Volcano, Oregon
N. S. MacLeod, D. R. Sherrod
1988, Journal of Geophysical Research Solid Earth (93) 10067-10079
At Newberry Volcano, central Oregon, more than 0.5 m.y. of magmatic activity, including caldera collapse and renewed caldera-filling volcanism, has created a structural and thermal chimney that channels magma ascent. Holocene rhyolitic eruptions (1) have been confined mainly within the caldera in an area 5 km in diameter, (2) have...
Sorption of vapors of some organic liquids on soil humic acid and its relation to partitioning of organic compounds in soil organic matter
G.T. Chlou, D. E. Kile, Ronald L. Malcolm
1988, Environmental Science & Technology (22) 298-303
Vapor sorption of water, ethanol, benzene, hexane, carbon tetrachloride, 1,1,1-trichloroethane, trichloroethylene, tetrachloroethylene, and 1,2-dibromoethane on (Sanhedron) soil humic acid has been determined at room temperature. Isotherms for all organic liquids are highly linear over a wide range of relative pressure, characteristic of the partitioning (dissolution) of the organic compounds in...
Search for volatiles on icy satellites: I. Europa
R. H. Brown, D. P. Cruikshank, A. T. Tokunaga, R. G. Smith, Roger N. Clark
1988, Icarus (74) 262-271
New reflectance spectra have been obtained for both the leading and trailing sides of Europa, using the Cooled Grating Array Spectrometer (CGAS) of the NASA Infrared Telescope Facility (IRTF). The spectra are of higher precision than any yet obtained. Spectra of Europa's trailing side (central meridian longitude ≈300°) obtained in...
Scientific goals of the Parkfield earthquake prediction experiment
W. Thatcher
1988, Earthquakes & Volcanoes (USGS) (20) 78-82
Several unique circumstances of the Parkfield experiment provide unprecedented opportunities for significant advances in understanding the mechanics of earthquakes. to our knowledge, there is no other seismic zone anywhere where the time, place, and magnitude of an impending earthquake are specified as precisely. Moreover, the epicentral region is located on...
Earthquakes, July-August 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 234-237
Major earthquakes (7.0-7.9) struck the Burma-India border on August 6 and the Solomon Islands on August 10. The most devastating earthquake during this reporting period was a magnitude 6.6 on the Nepal-India border on August 20. In the United States, there were no casualties from earthquakes but moderate earthquakes (5.0-5.9) were...
Determining baseline element composition of lichens. II. Hypogymnia enteromorpha and Usnea spp. at Redwood National Park, California
L. P. Gough, L. L. Jackson, J.A. Sacklin
1988, Water, Air, & Soil Pollution (38) 169-180
Hypogymnia enteromorpha and Usnea spp. were collected in the Little Bald Hills ultramafic region of Redwood National Park, California, to establish element-concentration norms. Baselines are presented for Ba, Ca, Cu, Mn, Ni, P, Sr, V, and Zn for both lichen species; for Li, Mg, and K for H. enteromorpha; and for Al, Ce, Cr,...
Forecasting California’s earthquakes
R. A. Kerr
1988, Earthquakes & Volcanoes (USGS) (20) 114-119
The first official earthquake forecast for California emphasizes the broad extent of the hazard and the uncertainties involved in predicting the next quakes. For the first time, researchers have reached to a consensus on the threat of large earthquakes to California, things look no worse for Los Angles than before. It...
Seabeam and seismic reflection imaging of the tectonic regime of the Andean continental margin off Peru (4°S to 10°S)
J. Bourgois, G. Pautot, W. Bandy, T. Boinet, P. Chotin, P. Huchon, B. Mercier de Lepinay, F. Monge, J. Monlau, B. Pelletier, M. Sosson, Roland E. von Huene
1988, Earth and Planetary Science Letters (87) 111-126
Marine geophysical surveys employing Seabeam, multi- and single-channel seismic reflection, gravity and magnetic instruments were conducted at two locations along the continental slope of the Peru Trench during the Seaperc cruise of the R/V “Jean Charcot” in July 1986. These areas are centered around 5°30′S and 9°30′S off the...
Geothermal gradients in the conterminous United States
M. Nathenson, M. Guffanti
1988, Journal of Geophysical Research Solid Earth (93) 6437-6450
Geothermal gradients from published temperature/depth measurements in drill holes generally deeper than 600 m are used to construct a temperature gradient map of the conterminous United States. The broadly contoured map displays 284 temperature gradients that are applicable to a depth of 2 km. In terms of the number of...
Organic geothermometry of petroleum from Escanaba Trough, offshore northern California
Keith A. Kvenvolden, John B. Rapp, Frances D. Hostettler, J. David, George E. Claypool
1988, Organic Geochemistry (13) 351-355
We have measured the extent of hopane and sterane isomerization and of monoaromatic-steroid-hydrocarbon aromatization in a sample of hydrothermally derived petroleum from the Escanaba Trough, a sediment-covered, volcanically active ridge axis. The results, along with kinetic parameters, predict the possible time-temperature history of the petrolum-forming process for this sample. The...
Some considerations in modeling the mallard life cycle
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
M.W. Weller, editor(s)
1988, Book chapter, Waterfowl in winter
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos). Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed...
Genetic interpretations of elemental and chemical differences in a soil chronosequence, California
J.W. Harden
1988, Geoderma (43) 179-193
Soils developed on fluvial terraces in central California have similar parent materials, climatic settings, vegetation cover and slopes but range in age from 40,000 to 3,000,000 years. The soils have chemical compositions that change systematically with increasing age. Such chemical differentiation is most likely the result of long-term weathering and...
Fate of acetone in an outdoor model stream in southern Mississippi, U.S.A.
R. E. Rathbun, D. W. Stephens, D.J. Shultz, D. Y. Tai
1988, Journal of Hydrology (104) 181-209
The fate of acetone in water was investigated in an outdoor model stream located in southern Mississippi, U.S.A. Acetone was injected continuously for 32 days resulting in small milligram-perliter concentrations in the stream. Rhodamine-WT dye was injected at the beginning and at the end of the study to determine the...
Low molecular weight species in humic and fulvic fractions
M. A. Wilson, P. J. Collin, Ronald L. Malcolm, E. Michael Perdue, P. Cresswell
1988, Organic Geochemistry (12) 7-12
Fourier transform solution 1H nuclear magnetic resonance (NMR) spectrometry with homogated water peak irradiation is a useful method for detecting low molecular weight substances in humic extracts. Succinate, acetate, methanol, formate, lactate and some aryl methoxyl compounds have been detected in extracts from a wide range of sources. In view of...
