Distribution and bioaccumulation of selenium in aquatic microcosms
John M. Besser, James N. Huckins, Edward E. Little, Thomas W. La Point
1989, Environmental Pollution (62) 1-12
Closed-system microcosms were used to study factors affecting the fate of selenium (Se) in aquatic systems. Distribution and bioaccumulation of Se varied among sediment types and Se species. A mixture of dissolved 75Se species (selenate, selenite and selenomethionine) was sorbed more rapidly to fine-textured, highly organic pond sediments than to...
A system for reconstituting special water qualities for use in chronic toxicity studies
Steven J. Hamilton, Neil L. Faerber, Kevin J. Buhl
1989, Water Research (23) 159-165
A water treatment system and procedure are described that are designed for preparing large quantities of reconstituted water with specific chemical and physical characteristics for use in chronic toxicity studies with fish and invertebrates. Water treatment units produce high-purity water in large quantities for storage in high-density cross-linked polyethylene tanks,...
Classification of lung cancer patients and controls by chromatography of modified nucleosides in serum
John E. McEntire, Kenneth C. Kuo, Mark E. Smith, David L. Stalling, Jack W. Richens Jr., Robert W. Zumwalt, Charles W. Gehrke, Ben W. Papermaster
1989, Cancer Research (49) 1057-1062
A wide spectrum of modified nucleosides has been quantified by high-performance liquid chromatography in serum of 49 male lung cancer patients, 35 patients with other cancers, and 48 patients hospitalized for nonneoplastic diseases. Data for 29 modified nucleoside peaks were normalized to an internal standard and analyzed by discriminant analysis...
Flow modeling in the Toutle River, Washington
Yasuyuki Shimizu, Randy L. Dinehart, J. Dungan Smith
1989, Conference Paper, Proceedings of the International Symposium on Sediment Transport Modeling
No abstract available. ...
Significance of new potassium-argon ages from the Goldens Ranch and Moroni Formations, Sanpete-Sevier Valley area, central Utah
I. J. Witkind, R. F. Marvin
1989, Geological Society of America Bulletin (101) 534-548
Exposures of volcanic-sedimentary strata are widely distributed within central Utah. We believe that these volcanic and stratified sedimentary rocks, known by different formational names in different parts of this region, are, in fact, segments of one and the same suite of rocks that formed during the early and middle Tertiary.The...
100 years of sedimentation study by the USGS
G. Douglas Glysson
1989, Conference Paper
On January 15, 1889, the U.S. Geological Survey began collecting sediment data on the Rio Grande at Embudo, New Mexico. During the past 100 years the U.S. Geological Survey's Water Resources Division (WRD) has collected daily sediment data at more than 1,200 sites. Projects have addressed the problems associated with...
Seismic reflection images of the crust of the northern part of the Chugach terrane, Alaska: Results of a survey for the Trans-Alaska Crustal Transect (TACT)
M. A. Fisher, T.M. Brocher, W. J. Nokleberg, George Plafker, G.L. Smith
1989, Journal of Geophysical Research Solid Earth (94) 4424-4440
Deep crustal seismic reflection data show strong reflections from the middle and lower crust of the convergent continental margin near the eastern end of the Aleutian trench. These data were collected across the Border Ranges fault system, a major suture zone that separates the Peninsular and Chugach tectonostratigraphic terranes. The...
Structures associated with strike-slip faults that bound landslide elements
R. W. Fleming, A. M. Johnson
1989, Engineering Geology (27) 39-114
Large landslides are bounded on their flanks and on elements within the landslides by structures analogous to strike-slip faults. We observed the formation of thwse strike-slip faults and associated structures at two large landslides in central Utah during 1983-1985. The strike-slip faults in landslides are nearly vertical but locally may...
Removing volatile contaminants from the unsaturated zone by inducing advective air-phase transport
A. L. Baehr, G.E. Hoag, M.C. Marley
1989, Journal of Contaminant Hydrology (4) 1-26
Organic liquids inadvertently spilled and then distributed in the unsaturated zone can pose a long-term threat to ground water. Many of these substances have significant volatility, and thereby establish a premise for contaminant removal from the unsaturated zone by inducing advective air-phase transport...
Acceleration spectra for subduction zone earthquakes
J. Boatwright, G. L. Choy
1989, Journal of Geophysical Research Solid Earth (94) 15541-15553
We estimate the source spectra of shallow earthquakes from digital recordings of teleseismic P wave groups, that is, P + pP + sP, by making frequency dependent corrections for the attenuation and for the interference of the free surface. The correction for the interference of the free surface assumes that the earthquake radiates energy from a range...
New evidence for polyphase metamorphism of glaucophane schist and eclogite exotic blocks in the Franciscan Complex, California and Oregon
Diane E. Moore, M.C. Blake Jr.
1989, Journal of Metamorphic Geology (7) 211-228
The early metamorphic history of high-grade exotic blocks in the Franciscan Complex may be more complicated than previously supposed. The different assemblages of high-grade glaucophane schists, eclogite, amphibolite and hornblende schist are commonly considered to have formed at the same time from essentially unmetamorphosed oceanic crust. However, new textural and...
Origin of Sr, Nd and Pb isotopic systematics in high-Sr basalts from central Arizona
J.H. Wittke, D. Smith, J. L. Wooden
1989, Contributions to Mineralogy and Petrology (101) 57-68
Alkalic and tholeiitic basalts were erupted in the central Arizona Transition Zone during Miocene-Pliocene time before and after regional faulting. The alkalic lava types differ from the subalkaline lavas in Sr, Nd and Pb isotopic ratios and trace element ratios and, despite close temporal and spatial relationships, the two types...
Interrelationships among hydrologic-budget components of a northern Wisconsin seepage lake and implications for acid-deposition modeling
Dennis A. Wentz, William J. Rose
1989, Archives of Environmental Contamination and Toxicology (18) 147-155
Components of the hydrologic budget for a northern Wisconsin seepage lake were analyzed by applying correlation and regression techniques to monthly data. Analyses for the 1981–83 water years revealed a statistically significant, direct relationship between storage change and precipitation-evaporation balance. Ground-water outflow was negatively correlated with ground-water inflow, and this...
Analysis of chlorinated organic compounds in estuarine biota and sediments by chemical ionization tandem mass spectrometry
C.E. Rostad, W. E. Pereira
1989, Biological Mass Spectrometry (18) 464-470
Complex sample matrices of estuarine biota tissue and bed sediment extracts were analyzed for selected chlorinated compounds. By using gas chromatography/positive chemical ionization/tandem mass spectrometry, the coeluting interferences present in gas chromatography/electron ionization mass spectrometry were eliminated in the biota tissue and bed sediment extracts. The...
Estimating urban flood-frequency characteristics
M.E. Jennings, J.B. Atkins, E. J. Inman
1989, Conference Paper
Methods in use by the U.S. Geological Survey to estimate flood-frequency characteristics for urban watersheds are compared with estimates based on the Soil Conservation Service TR-55 model. Data from four small urban watersheds in Georgia are used in the flood-peak and hydrograph comparisons....
Inverting measurements of surface slip on the Superstition Hills fault
J. Boatwright, K. E. Budding, R. V. Sharp
1989, Bulletin of the Seismological Society of America (79) 411-423
We derive and test a set of inversions of surface-slip measurements based on the empirical relation u(t) = uf/(1 + T/t)c proposed by Sharp and Saxton (1989) to estimate the final slip uf, the power-law exponent c, and the power-law duration T. At short times, Sharp's relation behaves like the...
Heat capacities and entropies from 8 to 1000 K of langbeinite (K2Mg2(SO4)3), anhydrite (CaSO4) and of gypsum (CaSO4·2H2O)
Richard A. Robie, Susan Russell-Robinson, Bruce S. Hemingway
1989, Thermochimica Acta (139) 67-81
Heat capacities of K2Mg2(SO4)3 (langbeinite) and CaSO4 (anhydrite) were measured from approximately 8 to 1000 K by combined adiabatic shield calorimetry (8-365 K) and differential scanning calorimetry (350-1000 K). Heat capacities were also measured on natural crystals of gypsum (CaSO4 · 2H2O) between 8.1 and 323.5 K. The molar entropies at 298.15...
Preliminary assessments of the occurrence and effects of utilization of sand and aggregate resources of the Louisiana inner shelf
J.R. Suter, J. Mossa, S. Penland
1989, Marine Geology (90) 31-37
Louisiana is experiencing the most critical coastal erosion and land loss problem in the United States. Shoreline erosion rates exceed 6 m/yr in more than 80% of the Louisiana coastal zone and can be up to 50 m/yr in areas impacted by hurricanes. The barrier islands have decreased in...
Recharge of the early atmosphere of Mars by impact-induced release of CO2
Michael H. Carr
1989, Icarus (79) 311-327
Channels on the Martian surface suggest that Mars had an early, relatively thick atmosphere. If the atmosphere was thick enough for water to be stable at the surface, CO2 in the atmosphere would have been fixed as carbonates on a relatively short time scale, previously estimated to be 1 bar...
Estimation of strong ground motions from hypothetical earthquakes on the Cascadia subduction zone, Pacific Northwest
T. H. Heaton, S.H. Hartzell
1989, Pure and Applied Geophysics PAGEOPH (129) 131-201
Strong ground motions are estimated for the Pacific Northwest assuming that large shallow earthquakes, similar to those experienced in southern Chile, southwestern Japan, and Colombia, may also occur on the Cascadia subduction zone. Fifty-six strong motion recordings for twenty-five subduction earthquakes of Ms???7.0 are used to estimate the response spectra...
Geographic information system/watershed model interface
Gary T. Fisher
1989, Conference Paper
Geographic information systems allow for the interactive analysis of spatial data related to water-resources investigations. A conceptual design for an interface between a geographic information system and a watershed model includes functions for the estimation of model parameter values. Design criteria include ease of use, minimal equipment requirements, a generic...
Data-collection program for Pamlico River Estuary model calibration and validation
Jerad D. Bales
1989, Conference Paper
An investigation is being conducted to collect and interpret continuous records relating to the flow characteristics of the Pamlico River Estuary, North Carolina, and to calibrate and validate a numerical model of estuarine hydrodynamics. The study reach is 50 kilometers long and ranges in width from 330 meters at the...
West Virginia Geological Survey's role in siting fluidized bed combustion facilities
C.J. Smith, Hobart M. King, K. C. Ashton, D.S. Kirstein, G.H. McColloch
1989, Conference Paper
A project is presented which demonstrates the role of geology in planning and siting a fluidized bed combustion facility. Whenever a project includes natural resource utilization, cooperation between geologists and design engineers will provide an input that could and should save costs, similar to the one stated in our initial...
Oxygen-isotope composition of ground water and secondary minerals in Columbia Plateau basalts: Implications for the paleohydrology of the Pasco Basin
P.P. Hearn Jr., W.C. Steinkampf, D. G. Horton, G.C. Solomon, L. D. White, J.R. Evans
1989, Geology (17) 606-610
Concentrations of 18O and deuterium in ground waters beneath the Hanford Reservation, Washington State, suggest that the meteoric waters recharging the basalt aquifers have been progressively depleted in these isotopes since at least Pleistocene time. This conclusion is supported by oxygen-isotope analyses of low-temperature...
Paleomagnetism of the Oligocene Kalamazoo Tuff: implications for middle Tertiary extension in east central Nevada
J.T. Hagstrum, P. B. Gans
1989, Journal of Geophysical Research Solid Earth (94) 1827-1842
The Oligocene Kalamazoo Tuff (≃35 Ma) was sampled for paleomagnetic analysis across a 100-km-wide zone of highly extended crust in east central Nevada to estimate between-site vertical axis rotations and thus the relative importance of strike-slip faulting to the mechanism of extension. Subordinate sampling was also undertaken in a younger...
