Hydrogeologic implications of increased septic-tank-soil-absorption system density, Ogden Valley, Weber County, Utah
Mike Lowe, Michael L. Miner
Robinson Lee, editor(s)
1990, Conference Paper
Ground water in Ogden Valley occurs in perched, confined, and unconfined aquifers in the valley fill to depths of 600 feet and more. The confined aquifer, which underlies only the western portion of the valley, is overlain by cleyey silt lacustrine sediments probably deposited during the Bonneville Basin's Little Valley...
Map of mean annual runoff for the Northeastern, Southeastern, and Mid-Atlantic United States, water years 1951-80
William R. Krug, Warren A. Gebert, David J. Graczyk, Donald L. Stevens Jr., Barry P. Rochelle, M. Robbins Church
1990, Water-Resources Investigations Report 88-4094
A map of mean annual runoff for States within the Northeastern, Southeastern, and Mid-Atlantic United States was prepared by the U.S. Geological Survey for the Direct/Delayed Response Project being conducted by the U.S. Environmental Protection Agency. This map shows mean annual runoff during water years 1951-80. Mean annual runoff from the...
The assemblage WO2 + H2O as a steady-state hydrogen source in moderately reduced hydrothermal experiments
G.L. Cygan, Chou I-Ming
1990, American Mineralogist (75) 1399-1405
The values of fH2 for the assemblage WO2 + WO2.72 + H2O (designated as WO) have been measured in sealed Au capsules under an external pressure of 2 kbar CH4 and between 650 and 800??C using Ag-AgBr-HBr sensors of fH2. The fH2 values obtained can be represented by the equation...
The diamicton at Deadman Pass, central Sierra Nevada, California: A residual lag and colluvial deposit, not a 3 Ma glacial till
R. A. Bailey, N.K. Huber, R.R. Curry
1990, Geological Society of America Bulletin (102) 1165-1173
A diamicton exposed at Deadman Pass in the central Sierra Nevada has been previously described as glacial till and dated at about 3 Ma. If till, the deposit would document an exceptionally old and previously unrecognized glaciation in the Sierra Nevada. The age and glacial origin of the diamicton at...
Molluscan evidence for early middle Miocene marine glaciation in southern Alaska
L. Marincovich Jr.
1990, Geological Society of America Bulletin (102) 1591-1599
Profound cooling of Miocene marine climates in southern Alaska culminated in early middle Miocene coastal marine glaciation in the northeastern Gulf of Alaska. This climatic change resulted from interaction of the Yakutat terrane with southern Alaska beginning in late Oligocene time. The ensuing...
Timing of uplift peripheral to the Red Sea, Saudi Arabia
C. W. Naeser, R.A. Zimmermann, R. G. Bohannon, D. L. Schmidt
Couchot PierreFromm M.Chambaudet A.Rebetez M.Van den haute Peteret al, editor(s)
1990, International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements (17) 424
A Prominent escarpment is found along the western margin of the Arabian Shield. Elevations along this escarpment are up to 3200 m above the Red Sea. Between the Red Sea and the crest of the escarpment is a relatively featureless coastal plane that is ??? 50 km across. The coastal...
Location and mapping of hydrologic regimes and thermal waters in Hawai'i: the use of electrical geophysical techniques
Jim Kauahikaua
1990, Conference Paper, Transactions - Geothermal Resources Council
Useful information on several different hydrologic regimes can be obtained using a combination of electrical geophysical surveys. Fresh-water lenses and laterally-confined aquifers can be located and mapped. However, more studies are required to evaluate the utility of geophysical methods for assessing perched aquifers....
Adverse effects of heated Bouin's solution on fish preservation
R. L. Herman, W. F. Krise
1990, Journal of Aquatic Animal Health (1) 307-309
Rainbow trout Oncorhynchus mykiss (formerly Salmo gairdneri) and lake trout Salvelinus namaycush preserved by immersion in Bouin's solution at 48°C became severely deformed due to muscle contraction. This was reflected in tissue changes, indicating that this technique induces undesirable artifacts that are likely...
Temperature, size, and depth of the magma reservoir for the Taylor Creek Rhyolite, New Mexico
W. A. Duffield, du Bray
1990, American Mineralogist (75) 1059-1070
The 55 km3 mid-Tertiary Taylor Creek Rhyolite in southwestern New Mexico consists of 20 lava domes and flows. This rhyolite is metaluminous to weakly peraluminous. Compositional zonation in feldspar phenocrysts is very minor and nonsystematic. The compositions of each feldspar species vary little throughout the suite of analyzed samples. This...
Coal and peat in the sub-Saharan region of Africa: alternative energy options?
Jean Noe Weaver, Edwin R. Landis
1990, Natural Resources Forum (14) 64-69
Increased energy demand as a result of growth in population, trends to sedentation and urbanization, and the desire for improvement in living standards, coupled with apparent climatic changes, are reducing fuelwood availability and contributing to deforestation and desertification in the sub‐Saharan countries. In 14 of those countries, the transport, industrial,...
Crustal structure of the northwestern Basin and Range Province from the 1986 Program for Array Seismic Studies of the Continental Lithosphere Seismic Experiment
Harley M. Benz, R. B. Smith, Walter D. Mooney
1990, Journal of Geophysical Research (95) 21823-21842
A portion of northwestern Nevada was imaged to determine the crustal structure and to assess reported differences between refraction versus reflection determinations of Moho depth and how the crustal composition and structure has been influenced by volcanic and extension mechanisms. Interpretation of the refraction/wide-angle reflection data suggests that the crust...
The surface area of soil organic matter
C. T. Chiou, J.-F. Lee, S.A. Boyd
1990, Environmental Science & Technology (24) 1164-1166
The previously reported surface area for soil organic matter (SOM) of 560-800 m2/g as determined by the ethylene glycol (EG) retention method was reexamined by the standard BET method based on nitrogen adsorption at liquid nitrogen temperature. Test samples consisted of two high organic content soils, a freeze-dried soil humic...
Infrared spectra and crystal chemistry of scapolites: implications for Martian mineralogy
Gregg A. Swayze, Roger N. Clark
1990, Journal of Geophysical Research (95) 14481-14495
Near‐infrared and midinfrared spectra of a wide range of scapolite compositions were studied to determine the cause of the 2.36‐μm features that have been correlated with similar features in the near‐IR spectrum of Mars. We attribute the 2.36−μm features to vibrations caused by HCO3− and HSO4− in the anion sites of scapolite....
The US Geological Survey's National Mapping Division programs, products, and services that can support wetlands mapping
F.S. Baxter
1990, Biological Report - US Fish & Wildlife Service (90) 87-92
The US Geological Survey (USGS) programs can play an important role in support of President Bush's policy of no net loss of wetlands. A principal goal of USGS is to provide cartographic information that contributes to the wise management of the Nation's natural resources. This information consists of maps, cartographic...
Slip partitioning of the Calaveras Fault, California, and prospects for future earthquakes
D. H. Oppenheimer, W. H. Bakun, A.G. Lindh
1990, Journal of Geophysical Research Solid Earth (95) 8483-8498
Examination of main shock and microearthquake data from the Calaveras Fault during the last 20 years reveals that main shock hypocenters occur at depths of 8-9 km near the base of the zone of microearthquakes. Microseismicity extends between depths of 4 and 10 km and defines zones of concentrated microseismicity...
Interaction of cold-water aquifers with exploited reservoirs of the Cerro Prieto geothermal system
Alfred Truesdell, Marcelo Lippmann
1990, Conference Paper, Transactions - Geothermal Resources Council
Cerro Prieto geothermal reservoirs tend to exhibit good hydraulic communication with adjacent cool groundwater aquifers. Under natural state conditions the hot fluids mix with the surrounding colder waters along the margins of the geothermal system, or discharge to shallow levels by flowing up fault L. In response to exploitation reservoir...
The thermodynamic properties of dumortierite Si3B[Al6.75[]0.25O17.25(OH)0.75]
Bruce S. Hemingway, Lawrence M. Anovitz, Richard A. Robie, James J. McGee
1990, American Mineralogist (75) 1370-1375
The heat capacities of dumortierite have been measured from 7 to 1000 K by quasiadiabatic low-temperature and differential scanning calorimetry. The corrected calorimetric entropy at 298.15 K calculated from the experimental data is 330.2 + 5.0 J/(mol.K) based upon the chemistry of the sample, average compositions proposed by Alexander et al. (1986), and correction...
Relationship between strong-motion array parameters and the accuracy of source inversion and physical waves
M. Iida, T. Miyatake, K. Shimazaki
1990, Bulletin of the Seismological Society of America (80) 1533-1552
We develop general rules for a strong-motion array layout on the basis of our method of applying a prediction analysis to a source inversion scheme. A systematic analysis is done to obtain a relationship between fault-array parameters and the accuracy of a source inversion. An overdetermined least-squares inversion scheme is...
Distribution and dispersal of suspended particulate matter on the Ebro continental shelf, northwestern Mediterranean Sea
A. Palanques, D.E. Drake
1990, Marine Geology (95) 193-206
Hydrographic data, water and bottom-sediment samples, and a GEOPROBE tripod experiment were used to examine the distribution and dynamics of suspended particulate matter on the Ebro shelf in the northwestern Mediterranean Sea.In the absence of strong winds and storms, primary...
Observation of sediment resuspension in Old Tampa Bay, Florida
David H. Schoellhamer
Chang Howard H.Hill Joseph C., editor(s)
1990, Conference Paper, Hydraulic Engineering - Proceedings of the 1990 National Conference
Equipment and methodology have been developed to monitor sediment resuspension at two sites in Old Tampa Bay. Velocities are measured with electromagnetic current meters and suspended solids and turbidity are monitored with optical backscatterance sensors. In late November 1989, a vertical array of instrument pairs was deployed from a permanent...
Stochastic summation of empirical Green's functions
Leif Wennerberg
1990, Bulletin of the Seismological Society of America (80) 1418-1432
Two simple strategies are presented that use random delay times for repeatedly summing the record of a relatively small earthquake to simulate the effects of a larger earthquake. The simulations do not assume any fault plane geometry or rupture dynamics, but realy only on the ω−2 spectral model of an...
A method of evaluating effects of antecedent precipitation on duststorms and its application to Yuma, Arizona, 1981-1988
D. J. MacKinnon, D.F. Elder, P. J. Helm, M.F. Tuesink, C.A. Nist
1990, Climatic Change (17) 331-360
Precipitation causes several short- and long-term effects on wind-induced surface erodibility and subsequent dust emission. Among the principal effects considered by this paper are soil moisture, soil crusts, and vegetation. A quantitative method is developed to assess these effects using differences between the potential and the actual amounts of dust...
Cretaceous and Eocene lignite deposits, Jackson Purchase, Kentucky
J.C. Hower, F.J. Rich, D.A. Williams, A.E. Bland, F.L. Fiene
1990, International Journal of Coal Geology (16) 239-254
Lignites occur in the Cretaceous McNairy Formation and the Eocene Claiborne Formation in the Jackson Purchase region of western Kentucky. The lone Cretaceous lignite sample has over 18 percent inertodetrinite and 32 percent humodetrinite which, along with the abundant mineral matter,...
Light attenuation and submersed macrophyte distribution in the tidal Potomac River and estuary
V. Carter, N. B. Rybicki
1990, Estuaries (13) 441-452
Changing light availability may be responsible for the discontinuous distribution of submersed aquatic macrophytes in the freshwater tidal Potomac River. During the 1985-1986 growing seasons, light attenuation and chlorophyll a and suspended particulate material concentrations were measured in an unvegetated reach (B) and in two adjacent vegetated reaches (A and...
Modern configuration of the southwest Florida carbonate slope: Development by shelf margin progradation
G. R. Brooks, C. W. Holmes
1990, Marine Geology (94) 301-315
Depositional patterns and sedimentary processes influencing modern southwest Florida carbonate slope development have been identified based upon slope morphology, seismic facies and surface sediment characteristics. Three slope-parallel zones have been identified: (1) an upper slope progradational zone (100–500 m) characterized by...
