Geochemical evidence for Se mobilization by the weathering of pyritic shale, San Joaquin Valley, California, U.S.A.
T. S. Presser, W. C. Swain
1990, Applied Geochemistry (5) 703-717
Acidic (pH 4) seeps issue from the weathered Upper Cretaceous-Paleocene marine sedimentary shales of the Moreno Formation in the semi-arid Coast Ranges of California. The chemistry of the acidic solutions is believed to be evidence of current reactions ultimately yielding hydrous...
Adsorption of benzene, toluene, and xylene by two tetramethylammonium-smectites having different charge densities
Jiunn-Fwu Lee, Max M. Mortland, Cary T. Chiou, Daniel E. Kite, Stephen A. Boyd
1990, Clays and Clay Minerals (38) 113-120
A high-charge smectite from Arizona [cation-exchange capacity (CEC) = 120 meq/100 g] and a low-charge smectite from Wyoming (CEC = 90 meq/100 g) were used to prepare homoionic tetramethylammonium (TMA)-clay complexes. The adsorption of benzene, toluene, and o-xylene as vapors by the dry TMA-clays and as solutes from water by...
Enzyme-linked immunosorbent assay compared with gas chromatography/mass spectrometry for the determination of triazine herbicides in water
E. Michael Thurman, Michael Meyer, Michael Pomes, Charles A. Perry, A. Paul Schwab
1990, Analytical Chemistry (62) 2043-2048
No abstract available....
A dolomitized shelf edge hardground in the northern Gulf of Mexico - Reply
Lawrence J. Poppe, Ronald C. Circe, April K. Vuletich
1990, Sedimentary Geology (68) 309-310
We (Poppe et al., 1990) agree with Gerald Friedman that the anaerobic oxidation of methane is important to the early diagenetic cementation by carbonates, but we feel that a few points need clarification....
A review of Physical principles of sedimentology: A readable textbook for beginners and experts
J. S. Schlee
1990, Marine Technology Society Journal (24) 49-49
No abstract available....
Wildfowl Decoys of the Pacific Coast: Carving traditions of British Columbia, Washington, Oregon, and California
M. R. Miller, F.A. Hanson
1990, Book
No abstract available at this time...
Origin and migration of hydrocarbon gases and carbon dioxide, Bekes Basin, southeastern Hungary
J.L. Clayton, C. W. Spencer, I. Koncz, A. Szalay
1990, Organic Geochemistry (15) 233-247
The Békés Basin is a sub-basin within the Pannonian Basin, containing about 7000 m of post-Cretaceous sedimentary rocks. Natural gases are produced from reservoirs (Precambrian to Tertiary in age) located on structural highs around the margins of the basin. Gas composition and stable carbon isotopic data indicate that most of...
Chironomidae of the southeastern United States: a checklist of species and notes on biology, distribution, and habitat
Patrick L. Hudson, David R. Lenat, Broughton A. Caldwell, David Smith
1990, Fish and Wildlife Research 7
We provide a current listing of the species of midges (Diptera:Chironomidae) in the southeastern United States (Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee). This checklist should aid research on this group of insects, which have often proved useful in the assessment of water quality. We document each species'...
Comparison of ground motion from tremors and explosions in deep gold mines
Art McGarr, J. Bicknell, J. Churcher, S. Spottiswoode
1990, Journal of Geophysical Research Solid Earth (95) 21777-21792
Seismic body waves, from tamped chemical explosions, two with yields of 50 and one of 150 kg, were compared with corresponding data from three mining-induced tremors with a view to testing methods of discriminating between the two types of events. Detonated at depths of about 2 km, all three explosions...
Radiocarbon analyses from Cincinnati, Ohio, and their implications for glacial stratigraphic interpretations
T.V. Lowell, K.M. Savage, Brockman C. Scott, R. Stuckenrath
1990, Quaternary Research (34) 1-11
Detailed analysis of a site near Cincinnati, Ohio, shows that 14C ages of samples in a single geologic unit can have a range of several thousand years and ages from different stratigraphic units can overlap. At the Sharonville site, four 14C samples from organic silt below glaciogenic deposits have an...
Evolution of the Tertiary La Honda basin, central California
Richard G. Stanley
1990, Conference Paper, Geology and tectonics of the central California coastal region, San Francisco to Monterey: Camarillo, Calif., American Association of Petroleum Geologists, Pacific Section Guidebook
Tertiary strata of the La Honda basin are exposed in the Santa Cruz Mountains along the central California coast south of San Francisco. The basin fill has a composite thickness of more than 14,500 m and consists of sedimentary and volcanic rocks that in places rest on granitic basement...
Temporal and spatial variations in the solute content of an alpine stream, Colorado Front Range
N. Caine, E.M. Thurman
1990, Geomorphology (4) 55-72
Seven years of discharge and water quality records define temporal and spatial patterns of solute movement in a Colorado alpine stream system. Dissolved solids concentrations are low, generally less than 30 mg 1−1 and occasionally less than 3 mg 1−1 at the highest elevations....
Effects of elevated temperatures and rising sea level on Arctic Coast
Peter W. Barnes
1990, Journal of Cold Regions Engineering (4) 21-28
Ice is a major agent on the inner shelf, gouging the bottom, increasing hydraulic scour, transporting sediment, and influencing river flood patterns. Rapid coastal retreat is common and low barrier islands and beaches are constantly changing due to the influence of permafrost, ice‐push, waves, and currents. Coastal processes are presently...
Mass-marking of otoliths of lake trout sac fry by temperature manipulation
Roger A. Bergstedt, Randy L. Eshenroder, Charles Bowen, James G. Seelye, Jeffrey C. Locke
1990, American Fisheries Society Symposium (7) 216-223
The otoliths of 676,000 sac fry of lake trout Salvelinus namaycush in 1986, and of 1,100,000 in 1987, were marked by daily manipulation of water temperature. The fish were stocked into Lake Huron in the spring. Otolith marks consisted of groups of daily growth rings accentuated into recognizable patterns by...
Will the 1990’s be a decade of increasingly destructive natural disasters?
P. L. Boulle
1990, Earthquakes & Volcanoes (USGS) (22) 173-175
Today, there is a considerable body of knowledge about natural hazards that laso enables us to devise effective means to limit the damage they cause. Yet, the reality of the situation is that disasters are increasing in number worldwide, and their social and economic impacts are becoming more nad more...
ESR studies of mylonite at San Andreas Fault, California
M. Ikeya, J. L. Bischoff
1990, Applied Magnetic Resonance (1) 97-100
The dating of the San Andreas Fault, California based on a qualitative analysis of EPR spectra of mylonite has been carried out. ?? 1990 Springer....
Heat capacities and thermodynamic properties of annite (aluminous iron biotite)
B. S. Hemingway, R. A. Robie
1990, American Mineralogist (75) 183-187
The heat capacities have been measured between 7 and 650 K by quasi-adiabatic calorimetry and differential scanning calorimetry. At 298.15 K and 1 bar, the calorimetric entropy for our sample is 354.9??0.7 J/(mol.K). A minimum configurational entropy of 18.7 J/(mol.K) for full disorder of Al/Si in the tetrahedral sites should...
Pedologic and climatic controls on Rn-222 concentrations in soil gas, Denver, Colorado
S. Asher-Bolinder, D.E. Owen, R.R. Schumann
1990, Geophysical Research Letters (17) 825-828
Soil-gas radon concentrations are controlled seasonally by factors of climate and pedology. In a swelling soil of the semiarid Western United States, soil-gas radon concentrations at 100 cm depth increase in winter and spring due to increased emanation with higher soil moisture and the capping effect...
Transformation of Monoaromatic hydrocarbons to organic acids in anoxic groundwater environment
I.M. Cozzarelli, R.P. Eganhouse, M.J. Baedecker
1990, Environmental Geology and Water Sciences (16) 135-141
The transformation of benzene and a series of alkylbenzenes was studied in anoxic groundwater of a shallow glacial-outwash aquifer near Bemidji, Minnesota, U.S.A. Monoaromatic hydrocarbons, the most water-soluble components of crude oil, were transported downgradient of an oil spill, forming a plume of contaminated groundwater. Organic acids that were not...
Earthquake and volcano hazard notices: An economic evaluation of changes in risk perceptions
R. L. Bernknopf, D.S. Brookshire, M.A. Thayer
1990, Journal of Environmental Economics and Management (18) 35-49
Earthquake and volcano hazard notices were issued for the Mammoth Lakes, California area by the U.S. Geological Survey under the authority granted by the Disaster Relief Act of 1974. The effects on investment, recretion visitation, and risk perceptionsare explored.The hazard notices did not affect recreation visitation, although investment was affected....
Isotopic geochemistry of a mid-Proterozoic evaporite basin: Balmat, New York
Joseph F. Whelan, Robert O. Rye, W. De Lorraine, Hiroshi Ohmoto
1990, American Journal of Science (290) 396-424
No abstract available....
Perspectives on the international decade for natural disaster reduction
Walter W. Hays
1990, Earthquake Spectra (6) 125-145
Disaster preparedness and disaster mitigation are the goals of nations throughout the world during the 1990's. The United States will lead this cooperative effort and marshall its national resources to reduce the disaster potential of earthquakes, floods, windstorms, landslides, volcanic eruptions, tsunamis, and wildfires. These natural hazards cause annual losses...
Eruptions of Mount St. Helens : Past, present, and future
Robert I. Tilling, Lyn J. Topinka, Donald A. Swanson
1990, Report
Mount St. Helens, located in southwestern Washington about 50 miles northeast of Portland, Oregon, is one of several lofty volcanic peaks that dominate the Cascade Range of the Pacific Northwest; the range extends from Mount Garibaldi in British Columbia, Canada, to Lassen Peak in northern California. Geologists call Mount St....
A history of the Water Resources Division, U.S. Geological Survey; Volume V, July 1, 1947, to April 30, 1957
G. E. Ferguson (compiler)
1990, Report
This volume is the fifth in a series of chronological summaries of the activities and achievements of the Water Resources Division of the U.S. Geological Survey, but it is the first to be published as a public document. As explained in the Preface which follows, the first volume was published...
Age of the Peach Springs Tuff, southeastern California and western Arizona
J. E. Nielson, D. R. Lux, G. B. Dalrymple, A. F. Glazner
1990, Journal of Geophysical Research Solid Earth (95) 571-580
Sanidine separates from pumice of the early Miocene Peach Springs Tuff are concordantly dated at 18.5±0.2 Ma by two isotopic techniques. The Peach Springs Tuff is the only known unit that can be correlated between isolated outcrops of Miocene strata from the central Mojave Desert of southeastern California to the...
