Horizontal anisotropy of the principal ground-water flow zone in the Salinas alluvial fan, Puerto Rico
V. Quinones-Aponte
1989, Ground Water (27) 491-500
Well drawdown data from an anisotropic aquifer in the Salinas alluvial fan were collected and analyzed with a computer program called TENSOR2D. The program uses ordinary and weighted least-squares optimization procedures to solve the system of simultaneous equations needed to define the theoretical transmissivity ellipse. Prediction of drawdown data was...
Spatial and temporal variability in South San Francisco Bay (USA). II. Temporal changes in salinity, suspended sediments, and phytoplankton biomass and productivity over tidal time scales
J. E. Cloern, T.M. Powell, L.M. Huzzey
1989, Estuarine, Coastal and Shelf Science (28) 599-613
Short-term variability of a conservative quantity (salinity) and two nonconservative quantities (chlorophyll a, suspended particulate matter) was measured across a sampling grid in the South San Francisco Bay estuary. Surface measurements were made every 2 h at each of 29 (or 38) sites,...
Seismic reflection characteristics of glacial and glacimarine sediment in the Gulf of Alaska and adjacent fjords
P.R. Carlson
1989, Marine Geology (85) 391-416
Glaciation together with tectonism have been dominant factors affecting sedimentation in the Gulf of Alaska area from at least the late Miocene throughout the Quaternary. The effects of tectonism are apparent in high mountains that border the gulf, raised terraces of...
Tectonic setting of the Yukon-Koyukuk basin and its borderlands, western Alaska
W. W. Patton Jr., S. E. Box
1989, Journal of Geophysical Research Solid Earth (94) 15807-15820
The Yukon-Koyukuk basin of western Alaska is composed of an arcuate belt of Jurassic and Early Cretaceous subduction-related volcanic and plutonic rocks (Koyukuk terrane) flanked by deep subbasins filled with mid-Cretaceous terrigenous sedimentary rocks. The basin is bordered on three sides by metamorphosed Proterozoic and Paleozoic continental rocks (Seward, Arctic...
Lead and cadmium associated with saltwater intrusion in a New Jersey aquifer system
Amleto A. Pucci Jr., Douglas A. Harriman, Elisabeth M. Ervin, Lisa Bratton, Alison Gordon
1989, Water Resources Bulletin (25) 1267-1272
The U.S. Geological Survey collected ground-water samples from the upper and middle aquifers of the Potomac-Raritan-Magothy aquifer system in a 400-square-mile area of New Jersey from 1984 through 1986. Concentrations of lead were greater than the U.S. Environmental Protection Agency maximum contaminant level (MCL) of 50 micrograms per liter in...
Graphical method for determining the coefficient of consolidation c from a flow-pump permeability test
Roger H. Morin, Harold W. Olsen, Karl R. Nelson, James D. Gill
1989, Geotechnical Testing Journal (12) 302-307
A graphical method has been developed for determining the coefficient of consolidation from the transient phases of a flow-pump permeability test. The flow pump can be used to infuse fluid into or withdraw fluid from a laboratory sediment specimen at a constant volumetric rate in order to obtain data that...
A reinterpretation of the δDH2O of inclusion fluids in contemporaneous quartz and sphalerite, Creede mining district, Colorodo: a generic problem for shallow orebodies?
Nora K. Foley, Philip M. Bethke, Robert O. Rye
1989, Economic Geology (84) 1966-1977
Water extracted from fluid inclusions in quartz from shallow epithermal ore deposits often has a hydrogen isotope composition (δD) different from that of water extracted from inclusions in associated minerals. This difference is usually attributed to the involvement of primary fluids from multiple sources. Isotopic and homogenization and freezing temperature...
Behaviour of abandoned room and pillar mines in Illinois
G.G. Marino, R.A. Bauer
1989, International Journal of Mining and Geological Engineering (7) 271-281
Little comprehensive information has been reported on the behaviour of room-and-pillar mines. The objective of this paper is to present case data on mine failures in the Illinois basin for use in practice. Presented are results of an ongoing study and details on the site characteristics of cases where sags...
On the use of volumetric strain meters to infer additional characteristics of short-period seismic radiation
R. D. Borcherdt, M.J.S. Johnston, G. Glassmoyer
1989, Bulletin of the Seismological Society of America (79) 1006-1023
Volumetric strain meters (Sacks-Evertson design) are installed at 15 sites along the San Andreas fault system, to monitor long-term strain changes for earthquake prediction. Deployment of portable broadband, high-resolution digital recorders (GEOS) at several of the sites extends the detection band for volumetric strain to periods shorter than 5 ×...
Porosity development in coastal carbonate aquifers
W. E. Sanford, Leonard F. Konikow
1989, Geology (17) 249-252
Geochemical mixing theory suggests that the mixing of seawater and calcite-saturated fresh ground water can result in a solution that is undersaturated with respect to calcite. Previous studies of the mixing of such waters in carbonate rocks along certain coastlines have indicated that...
Petrology and age of volcanic-arc rocks from the continental margin of the Bering Sea: Implications for Early Eocene relocation of plate boundaries
A. S. Davis, L.-B.G. Pickthorn, T.L. Vallier, M. S. Marlow
1989, Canadian Journal of Earth Sciences (26) 1474-1490
Eocene volcanic flow and dike rocks from the Beringian margin have arc characteristics, implying a convergent history for this region during the early Tertiary. The extrusive rocks are basalt, basaltic andesite, andesite, and minor dacite and rhyolite. The intrusive sample is from a quartz diorite dike intruding serpentinized peridotite. Major-element...
Structure and tectonostratigraphy of the eastern Blue Ridge and western Piedmont
A. E. Nelson, J. Wright Horton Jr.
1989, Book chapter, Tectonostratigraphic expression of terrane accretion in the Southern Appalachian Orogen
No abstract available...
Structure and tectonostratigraphy of the western and eastern Blue Ridge allochthonous complexes, Georgia
A. E. Nelson
1989, Book chapter, Tectonostratigraphic expression of terrane accretion in the Southern Appalachian Orogen; a geotraverse excursion
Transport of microspheres and indigenous bacteria through a sandy aquifer: Results of natural- and forced-gradient tracer experiments
R.W. Harvey, L.H. George, R. L. Smith, D.R. LeBlanc
1989, Environmental Science & Technology (23) 51-56
Transport of indigenous bacteria through sandy aquifer sediments was investigated in forced- and natural-gradient tracer teste. A diverse population of bacteria was collected and concentrated from groundwater at the site, stained with a DNA-specific fluorochrome, and injected back into the aquifer. Included with the injectate were a conservative tracer (Br-...
Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia
P.C. Lyons, C.A. Palmer, N. H. Bostick, J.D. Fletcher, F.T. Dulong, F. W. Brown, Z. A. Brown, M.R. Krasnow, L.A. Romankiw
1989, International Journal of Coal Geology (13) 481-527
A rank series consisting of twelve vitrinite concentrates and companion whole-coal samples from mined coal beds in the eastern United States, England, and Australia were analyzed for C, H, N, O, ash, and 47 trace and minor elements by standard elemental,...
Characterization of coal-derived hydrocarbons and source-rock potential of coal beds, San Juan Basin, New Mexico and Colorado, U.S.A.
D. D. Rice, J.L. Clayton, M. J. Pawlewicz
1989, International Journal of Coal Geology (13) 597-626
Coal beds are considered to be a major source of nonassociated gas in the Rocky Mountain basins of the United States. In the San Juan basin of northwestern New Mexico and southwestern Colorado, significant quantities of natural gas are being produced...
Petrology of the zoned calcalkaline magma chamber of Mount Mazama, Crater Lake, Oregon
T. H. Druitt, C. R. Bacon
1989, Contributions to Mineralogy and Petrology (101) 245-259
Evolution of the magma chamber at Mount Mazama involved repeated recharge by two types of andesite (high-Sr and low-Sr), crystal fractionation, crystal accumulation, assimilation, and magma mixing (Bacon and Druitt 1988). This paper addresses the modal compositions, textures, mineral chemistry and magmatic temperatures of (i) products of the 6845±50 BP...
Enteric redmouth disease
G. L. Bullock
1989, Fish Health Bulletin 4
No abstract available at this time...
Systemic noninfectious granulomatoses of fishes
R. L. Herman
1989, Fish Disease Leaflet 79
No abstract available at this time...
Solubility of jarosite solid solutions precipitated from acid mine waters, Iron Mountain, California
Charles N. Alpers, D. Kirk Nordstrom, J.W. Ball
1989, Science Geological Bulletin (42) 281-298
Because of the common occurrence of 15 to 25 mole percent hydronium substitution on the alkali site in jarosites, it is necessary to consider the hydronium content of jarosites in any attempt at rigorous evaluation of jarosite solubility or of the saturation state of natural waters with respect to jarosite....
Hydrologic effects of climate change in the Delaware River basin
Gregory J. McCabe, Mark A. Ayers
1989, Water Resources Bulletin (25) 1231-1242
The Thornthwaite water balance and combinations of temperature and precipitation changes representing climate change were used to estimate changes in seasonal soil-moisture and runoff in the Delaware River basin. Winter warming may cause a greater proportion of precipitation in the northern part of the basin to fall as rain, which...
Wilderness and the protection of genetic diversity
C. Schonewald-Cox, T.J. Stohlgren
1989, General Technical Report SE-51
No abstract available at this time...
Preservation of samples for dissolved mercury
S. N. Hamlin
1989, Water Resources Bulletin (25) 255-262
Water samples for dissolved mercury requires special treatment because of the high chemical mobility and volatility of this element. Widespread use of mercury and its compounds has provided many avenues for contamination of water. Two laboratory tests were done to determine the relative permeabilities of glass and plastic sample bottles...
Active faulting and deformation of the Coalinga anticline as interpreted from three-dimensional velocity structure and seismicity
D. Eberhart-Phillips
1989, Journal of Geophysical Research Solid Earth (94) 15565-15586
This work gives a clear picture of the geometry of aftershock seismicity in a large thrust earthquake. Interpretation of hypocenters and fault plane solutions, from the 1983 Coalinga, Coast Range California, earthquake sequence, in combination with the three-dimensional velocity structure shows that the active faulting beneath the fold primarily consists...
The geology, botany and chemistry of selected peat-forming environments from temperate and tropical latitudes
C. C. Cameron, J.S. Esterle, C.A. Palmer
1989, International Journal of Coal Geology (12) 105-156
Peat has been studied in several geologic settings: (1) glaciated terrain in cold temperate Maine and Minnesota, U.S.A.; (2) an island in the Atlantic Ocean off the coast of Maine, where sea level is rising; (3) the warm temperate U.S. Atlantic...
