A record of Appalachian denudation in postrift Mesozoic and Cenozoic sedimentary deposits of the U.S. Middle Atlantic continental margin
C. W. Poag, W. D. Sevon
1989, Geomorphology (2) 119-157
The complex interplay between source-terrain uplift, basin subsidence, paleoclimatic shifts, and sea-level change, left an extensive sedimentary record in the contiguous offshore basins of the U.S. middle Atlantic margin (Salisbury Embayment, Baltimore Canyon Trough, and Hatteras Basin). Isopach maps of 23 postrift...
Swift snowmelt and floods (lahars) caused by great pyroclastic surge at Mount St Helens volcano, Washington, 18 May 1980
R. B. Waitt
1989, Bulletin of Volcanology (52) 138-157
The initial explosions at Mount St. Helens, Washington, on the moring of 18 May 1980 developed into a huge pyroclastic surge that generated catastrophic floods off the east and west flanks of the volcano. Near-source surge deposits on the east and west were lithic, sorted, lacking in accretionary lapilli and...
Fusarium mycotoxins from peanuts suspected as a cause of sandhill crane mortality
Ronald M. Windingstad, Richard J. Cole, Paul E. Nelson, Thomas J. Roffe, Ronnie R. George, Joe W. Dorner
1989, Journal of Wildlife Diseases (25) 38-46
An estimated 9,500 sandhill cranes (Grus canadensis) died in Gaines County, Texas and Roosevelt County, New Mexico between 1982 and 1987. The predominant clinical sign observed in sick cranes was their inability to hold their heads erect, both while standing and flying. Multiple muscle hemorrhages and submandibular edema were the...
Movements of striped mullet, Mugil cephalus, tagged in Everglades National Park, Florida
N.A. Funicelli, D.A. Meineke, H.E. Bryant, M. R. Dewey, G.M. Ludwig, L.S. Mengel
1989, Bulletin of Marine Science (44) 171-178
The movements of striped mullet, Mugil cephalus, were studied from fish tagged in Everglades National Park. Florida. A total of 16,604 fish were tagged from March 1984 to September 1985. During the period December 1984 through February 1985 recaptured tagged fish moved significantly further and more northerly out of the...
Shaded relief map of US topography from digital elevations
R.J. Pike, G.P. Thelin
1989, Eos, Transactions, American Geophysical Union (70) 843-853
Much geologic and geophysical information that lies encoded within land surface form can be revealed by image processing large files of digitized elevations in fast machines and mapping the results. This convergence of computers, analytic software, data, and output devices has created exciting opportunities for automating...
Brain cholinesterase activity of nestling great egrets snowy egrets and black-crowned night-herons
T. W. Custer, H. M. Ohlendorf
1989, Journal of Wildlife Diseases (25) 359-363
Inhibition of brain cholinesterase (ChE) activity in birds is often used to diagnose exposure or death from organophosphorus or carbamate pesticides. Brain ChE activity in the young of altricial species increases with age; however, this relationship has only been demonstrated in the European starling (Sturnus vulgaris). Brain ChE activity of...
Analytical results for ten water-extractable ions from B-horizon soils on St. Thomas and St. Croix, U.S. Virgin Islands and K-Ar ages for seven rocks from St. John and St. Thomas, U.S. Virgin Islands
J. B. McHugh, R. E. Tucker, H. V. Alminas
1989, Open-File Report 89-563
No abstract available....
Seasonal reproductive development of Lampsilis cardium, Amblema plicata plicata, and Potamilus alatus
L. E. Holland Bartels, T. W. Kammer
1989, Journal of Freshwater Ecology (5) 87-92
Adult specimens of three species of freshwater mussels common to the upper Mississippi River were examined histologically to determine seasonal patterns of development in gametogenesis and release of glochidia. Full maturation of gonadal materials in Lampsilis cardium (formerly L. ovata ventricosa), a long-term breeder, occurred when ambient river temperatures...
Rice available to waterfowl in harvested fields in the Sacramento Valley, California
M. R. Miller, D.E. Sharp, D.S. Gilmer, W.R. Mulvaney
1989, California Fish and Game (75) 113-123
Rice fields in the Sacramento Valley, California were sampled in 1985 and 1986 to determine the weight of rice seed remaining in the fields immediately after harvest and again after the fields were burned. No significant differences were found between years (P>0.05). The pooled mean was 388 kg/ha in harvested...
The campi flegrei (Italy) geothermal system: A fluid inclusion study of the mofete and San Vito fields
Vivo B. de, H. E. Belkin, M. Barbieri, W. Chelini, P. Lattanzi, A. Lima, L. Tolomeo
1989, Journal of Volcanology and Geothermal Research (36) 303-326
A fluid inclusion study of core from the Mofete 1, Mofete 2, Mofete 5, San Vito 1, and San Vito 3 geothermal wells (Campi Flegrei, Campania, Italy) indicates that the hydrothermal minerals were precipitated from aqueous fluids (??CO2) that were moderately saline (3-4 wt.% NaCl equiv.) to hypersaline (> 26...
A semiquantitative X-ray diffraction method to determine mineral composition in stream sediments with similar mineralogy
Daniel M. Webster
1989, Environmental Technology Letters (10) 833-844
A semiquantitative X‐ray diffraction procedure has been developed that can be used to acquire reproducible mineralogic data from geographically unrelated stream‐sediment samples having similar mineralogy. Weight percentages for quartz, total‐feldspar, and total‐clay can be determined by direct comparison of intensities with standard‐mineral mixtures of known weight percent. Matrix effects and...
Reinterpretation of lower Mesozoic rocks on the Chilkat Peninsula, Alaska, as a displaced fragment of Wrangellia
George Plafker, C.D. Blome, Norman J. Silberling
1989, Geology (17) 3-6
The southern Chilkat Peninsula is underlain by low-grade metamorphic rocks consisting of a thick unit of greenstone, in part of Carnian age, that is locally overlain by an attenuated section of calcareous sedimentary rocks and chart of latest Carnian to late Norian age...
Dispersal in the communally breeding groove-billed ani (Crotophaga sulcirostris)
B. S. Bowen, Rolf R. Koford, S.L. Vehrencamp
1989, Condor (91) 52-64
We studied dispersal in a color-banded population of the Groove-billed Ani (Crotophaga sulcirostris) in Costa Rica. Eight percent of the young alive at the end of the breeding season bred on their natal territories the next year and 4% remained but did not breed. Thirteen percent dispersed successfully within the...
Teleseismically recorded seismicity before and after the May 7, 1986, Andreanof Islands, Alaska, earthquake
E.R. Engdahl, S. Billington, C. Kisslinger
1989, Journal of Geophysical Research Solid Earth (94) 15481-15498
The May 7, 1986, Andreanof Islands earthquake (Mw 8.0) is the largest event to have occurred in that section of the Aleutian arc since the March 9, 1957, Aleutian Islands earthquake (Mw 8.6). Teleseismically well-recorded earthquakes in the region of the 1986 earthquake are relocated with a plate model and with careful...
Back-arc with frontal-arc component origin of Triassic Karmutsen basalt, British Columbia, Canada
F. Barker, Brown A. Sutherland, J. R. Budahn, George Plafker
1989, Chemical Geology (75) 81-102
The largely basaltic, ???4.5-6.2-km-thick, Middle to Upper Triassic Karmutsen Formation is a prominent part of the Wrangellian sequence. Twelve analyses of major and minor elements of representative samples of pillowed and massive basalt flows and sills from Queen Charlotte and Vancouver Islands are ferrotholeiites that show a range of 10.2-3.8%...
The nature of the crust in the Yukon-Koyukuk province as inferred from the chemical and isotopic composition of five Late Cretaceous to Early Tertiary volcanic fields in western Alaska
E. Moll-Stalcup, Joseph G. Arth
1989, Journal of Geophysical Research Solid Earth (94) 15989-16020
Late Cretaceous and early Tertiary volcanic and plutonic rocks in western Alaska comprise a vast magmatic province extending from the Alaska Range north to the Arctic Circle, south to Bristol Bay, and west to the Bering Sea Shelf. The chemical and isotopic composition of five of these Late Cretaceous to...
A note on the occurrence of allocrioceras billinghursti Klinger, 1976 (Cretaceous Ammonoidea) in the Middle Turonian of the Western Interior of the United States
W. A. Cobban, W. J. Kennedy
1989, Cretaceous Research (10) 173-175
No abstract available....
The prediction of aquatic sediment-associated trace element concentration using selected geochemical factors
A. J. Horowitz, K. A. Elrick, R. P. Hooper
1989, Hydrological Processes (3) 347-364
Multiple linear regression models calculated from readily obtainable chemical and physical parameters can explain a high percentage (70 per cent or greater) of observed sediment-trace element variance for Cu, Zn, Pb, Cr, Ni, Co, As, Sb, Se, and Hg in a widely divergent suite of...
Mineral saturation states in natural waters and their sensitivity to thermodynamic and analytical errors
D. Kirk Nordstrom, James W. Ball
1989, Science Geological Bulletin (42) 269-280
Saturation indices computed with WATEQ4F chemical analyses from a groundwater in crystalline bedrock and a surface water receiving acid mine drainage are frequently at or above saturation with respect to calcite, fluorite, barite, gibbsite and ferrihydrite. Deep granitic groundwaters from Stripa, Sweden, are supersaturated with respect to calcite and fluorite....
Use of multivariate analysis for determining sources of solutes found in wet atmospheric deposition in the United States
R. P. Hooper, N.E. Peters
1989, Environmental Science & Technology (23) 1263-1268
No abstract available....
Overview of Devonian Duperow formation production, Billings anticline, North Dakota
Randolph B. Burke
1989, Oil & Gas Journal (87) 80-83
Oil exploration on the Billings anticline began in earnest in 1978, which is a north-plunging structure in the north central part of southwestern North Dakota. Forty-two fields are included in the Billings anticline area. This paper discusses the following features of the Billings anticline: structure, lithology, Duperow production, and some...
Implementation of a hydrodynamic model for the upper Potomac Estuary
Raymond W. Schaffranek, Robert A. Baltzer
1989, Conference Paper
A vertically integrated, two-dimensional hydrodynamic/transport model has been implemented for the upper extent of the Potomac Estuary between Indian Head and Morgantown, Md. The model computes water-surface elevations, flow velocities, and time-varying constituent concentrations by numerically integrating finite-difference forms of the equations of mass and momentum conservation in conjunction with...
Aqueous chlorination of resorcinol
V.L. Heasley, M.D. Burns, N.A. Kemalyan, T.C. Mckee, H. Schroeter, B.R. Teegarden, S.E. Whitney, R.L. Wershaw
1989, Environmental Toxicology and Chemistry (8) 1159-1163
An investigation of the aqueous chlorination (NaOCl) of resorcinol is reported. The following intermediates were detected in moderate to high yield at different pH values and varying percentages of chlorination: 2-chloro-, 4-chloro-, 2,4-dichloro-, 4,6-dichloro- and 2,4,6-trichlororesorcinol. Only trace amounts of the intermediates were detected when the chlorination was conducted in...
Re-Os, Rb-Sr, and O isotopic systematics of the Archean Kolar schist belt, Karnataka, India
R.J. Walker, S.B. Shirey, G. N. Hanson, V. Rajamani, M.F. Horan
1989, Geochimica et Cosmochimica Acta (53) 3005-3013
The Re-Os, Rb-Sr, and O isotopic compositions of mafic and ultramafic amphibolites, gold ores, and granitic gneisses of the circa 2700 Ma Kolar schist belt reveal at least two episodes of post-magmatic alteration that affected these systems. The Re-Os isotopic systematics of many of the rocks of the belt indicate...
Robustness of disaggregate oil and gas discovery forecasting models
E. D. Attanasi, J.H. Schuenemeyer
1989, Marine and Petroleum Geology (6) 270-276
The trend in forecasting oil and gas discoveries has been to develop and use models that allow forecasts of the size distribution of future discoveries. From such forecasts, exploration and development costs can more readily be computed. Two classes of these forecasting models are the Arps-Roberts type models and the...
