Volcano monitoring at the U.S. Geological Survey's Hawaiian Volcano Observatory
Christina C. Heliker, J. D. Griggs, T. Jane Takahashi, Thomas L. Wright
Henry Spall, editor(s)
1986, Earthquakes & Volcanoes (USGS) (18) 4-69
The island of Hawaii has one of the youngest landscapes on Earth, formed by frequent addition of new lava to its surface. Because Hawaiian are generally nonexplosive and easily accessible, the island has long attracted geologists interested in studying the extraordinary power of volcanic eruptions. The U.S. Geological Survey's Hawaiian Volcano...
National atlas: Territorial growth
H. George Stoll
1986, Report
No abstract available....
Miocene diatoms from Richmond, Virginia
George William Andrews
1986, Journal of Paleontology (60) 497-538
In downtown Richmond, Va., a highly diatomaceous deposit contains a diatom assemblage in which 87 taxa have been identified. The diatoms indicate that this sedimentary unit is correlative with Lithologic Unit 19 of the Choptank Formation of middle Miocene age. Also in Richmond, a sedimentary unit correlated with the Eastover...
The application of habitat modeling to the desert tortoise (Gopherus agassizii)
Melvin L. Schamberger, Frederick B. Turner
1986, Herpetologica (42) 134-138
Habitat modeling offers an approach to understanding some management problems of desert tortoises (Gopherus agassizii) and to focusing new research efforts. Modeling can provide (1) a method to organize existing information, (2) a means to identify whether physical habitat or some factor outside the scope of the habitat model...
Effects of five metals on susceptibility of striped bass to Flexibacter columnaris
R.D. MacFarlane, G. L. Bullock, J.J.A. McLaughlin
1986, Transactions of the American Fisheries Society (115) 227-231
Exposure of young striped bass Morone saxatilis (weight, 8.5–34 g) to a mixture of arsenic, cadmium, copper, lead, and selenium at 4 and 10 times the average environmental concentrations of 1–3 μg/L protected the fish from experimental infection with Flexibacter columnaris, the causal organism of columnaris disease. In four trials,...
Controlled and renewable release of phosphorous in soils from mixtures of phosphate rock and NH4-exchanged clinoptilolite
T.-M. Lai, D. D. Eberl
1986, Zeolites (6) 129-132
A controlled and renewable release fertilization system is proposed that employs NH4 saturated clinoptilolite to aid in the dissolution of phosphate rock (apatite), and thereby to release soluble N, P, and exchangeable Ca for uptake by plants. The system is based on the principle that exchangers can sequester Ca ions...
Predictive accuracy of a ground-water model--Lessons from a postaudit
Leonard F. Konikow
1986, Groundwater (24) 173-184
Hydrogeologic studies commonly include the development, calibration, and application of a deterministic simulation model. To help assess the value of using such models to make predictions, a postaudit was conducted on a previously studied area in the Salt River and lower Santa Cruz River basins in central Arizona. A deterministic,...
Modeling contamination of shallow unconfined aquifers through infiltration beds
D.W. Ostendorf
1986, Water Resources Research (22) 375-382
We model the transport of a simply reactive contaminant through an infiltration bed and underlying shallow, one-dimensional, unconfined aquifer with a plane, steeply sloping bottom in the assumed absence of dispersion and downgradient dilution. The effluent discharge and ambient groundwater flow under the infiltration beds are presumed to form a...
Renesting Characteristics of Captive Mallards on Experimental Ponds
G.A. Swanson, T.L. Shaffer, J.F. Wolf, F.B. Lee
1986, Journal of Wildlife Management (50) 32-38
Renesting characteristics of captive wild-strain mallards (Anas platyrhynchos) were investigated on experimental ponds in southcentral North Dakota during the breeding seasons of 1976-81. Renesting efforts and egg production increased during the 1st 3 years. Post-yearling females that experienced clutch loss during early incubation produced 3 clutches of eggs during the...
Cation-ratio and accelerator radiocarbon dating of rock varnish on Mojave artifacts and landforms
R.I. Dorn, D.B. Bamforth, T.A. Cahill, J. C. Dohrenwend, B. D. Turrin, D.J. Donahue, A.J.T. Jull, A. Long, M.E. Macko, E.B. Weil, D.S. Whitley, T.H. Zabel
1986, Science (231) 830-833
The first accelerator radiocarbon dates of rock varnishes are reported along with potassium/argon ages of lava flows and conventional radiocarbon dates of pluvial lake shorelines, in an empirical calibration of rock varnish K+ + Ca2+/Ti4+ ratios with age in the Mojave Desert, eastern California. This calibration was used to determine the cation-ratio...
Kovats and lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest
Colleen E. Rostad, Wilfred E. Pereira
1986, Journal of Separation Science (9) 328-334
Retention indices of standard organic compounds of environmental interest were determined by gas chromatography/mass spectrometry, using a DB‐5 fused‐silica capillary column. Retention indices are useful references for tentative compound identification by gas chromatography, or confirmation by gas chromatography/mass spectrometry. They provide elution order for isomers that...
Strain accumulation in the Shumagin and Yakataga seismic gaps, Alaska
J.C. Savage, M. Lisowski, W.H. Prescott
1986, Science (231) 585-587
Strain accumulation during the 1980-85 interval has been measured by means of trilateration surveys in the Shumagin and Yakataga seismic gaps, which are the two regions identified as the most likely sites for the next great thrust earthquakes along the Alaska-Aleutian arc. No significant strain accumulation was detected in the...
Isotopic composition of interstitial fluids in sediment of the Nankai Trough, Deep Sea Drilling Project Leg 87
George E. Claypool, A.K. Vuletich, Keith A. Kvenvolden
1986, Initial Reports of the D.S.D.P. (87) 857-860
The isotopic compositions of dissolved CO2 and CH4 in sediments of the Nankai Trough indicate that CH4 is formed during early diagenesis by microbial reduction of CO2 . At the shallowest sampled depths, the CO2 dissolved in the pore water is unusually enriched in 12C (δ13C = - 35.2‰), indicating...
Dipping reflectors in the Norwegian Sea—ODP Leg 104 drilling results: LEG 104 SCIENTIFIC PARTY
O. Eldholm, Jorn Thiede, E. Taylor, K. Bjorklund, U. Bleil, P. Cielsielski, A. Despraries, D. Donnally, C. Froget, R. Goll, R. Henrich, E. Jansen, L. Krissek, Keith A. Kvenvolden, A.P. LeHuray, D. Love, P. Lysne, T.J. McDonald, P.J. Mudie, Lisa E. Osterman, L.M. Parson, J. Phillips, A. Pittenger, G. Qvale, G. Schoenharting, L. Viereck-Goette, A. Morton, I. Gibson
1986, Journal of the Geological Society (143) 911-912
Ocean Drilling Program (ODP) Leg 104 successfully completed a number of deep drill holes on the Outer V0ring Plateau and the Vering Basin during July and August 1985 (Fig. 1; Eldholm, Thiede, Taylor et al. 1986). One of the principal objectives of the leg was to drill and sample a...
Geochemical imprint of depositional conditions on organic matter in laminated—Bioturbated interbeds from fine-grained marine sequences
Lisa M. Pratt, George E. Claypool, J. David King
1986, Marine Geology (70) 67-84
Laminated organic-rich shales are interbedded at a scale of centimeters to a few meters with bioturbated organic-poor mudstones or limestones in some fine-grained marine sequences. We have analyzed the organic matter in pairs of laminated/bioturbated interbeds from Cretaceous and Devonian rocks deposited in epicontinental and oceanic settings for the purpose...
Wildlife in some areas of New Mexico and Texas accumulate elevated DDE residues, 1983
Donald H. White, Alexander J. Krynitsky
1986, Archives of Environmental Contamination and Toxicology (15) 149-157
Over the last decade, data gathered by the U.S. Fish & Wildlife Service's National Contaminant Biomonitoring Program have identified an area of elevated DDE contamination in portions of New Mexico and Texas. Extensive wildlife sampling in 1983 confirmed that DDE, the major metabolite of the insecticide DDT, was present at...
Bird predation on cutworms (Lepidoptera: Noctuidae) in wheat fields and chlorpyrifos effects on brain cholinesterase activity
L. C. McEwen, Lawrence R. DeWeese, P. Schladweiler
1986, Environmental Entomology (15) 147-151
Horned larks, Eremophila alpestris (L.), and McCown's longspurs, Calcarius mccownii (Lawrence), were collected at intervals from two winter wheat fields in Montana after aerial application of chlorpyrifos to control cutworms. Both bird species had a high (95–100%) incidence of Lepidoptera, mostly pale western cutworms, Agrotis orthogonia Morrison, in their stomachs at 3 days postspray. Incidence of...
Identification of solute loading sources to a surface stream
R. L. Rittmaster, D. K. Mueller
1986, Journal of the American Water Resources Association (22) 81-89
A study was performed to identify sources of solute loading to the Dirty Devil River and its major tributaries, in southeastern Utah. A primary goal was to determine the contribution of gypsum dissolution to total dissolved solids concentration, and its potential increase in the future if salinity...
Wetland ecosystems studies from a hydrologic perspective
James W. LaBaugh
1986, Journal of the American Water Resources Association (22) 1-10
Selected studies from the literature were reviewed to determine the extent of knowledge about the relationship between hydrology and wetland ecosystem studies. Wetland studies of chemical input-output relationships have been the most dependent on hydrologic data of all wetland investigations; yet, very few of these studies have attempted to measure...
Application of continuous seismic reflection methods to hydrologic studies
F.P. Haeni
1986, Groundwater (24) 23-31
Oil and gas exploration and engineering studies in water‐covered areas routinely use continuous seismic profiling techniques to obtain subsurface geologic information. Such profiling also can be used effectively in hydrologic studies to define the geologic framework of aquifer systems, to locate hydrologic boundaries, and in some places, to interpret the...
Stratigraphy and correlation of the glacial deposits on the Montana Plains
David S. Fullerton, Roger B. Colton
1986, Quaternary Science Reviews (5) 69-82
Till units representing at least three pre-Illinoian continental glaciations, at least one Illinoian glaciation, and a late Wisconsin glaciation have been identified on the Montana Plains. Early Wisconsin or middle Wisconsin till units have not been identified. The southernmost limit of late Wisconsin glaciation is in Montana, more than 170...
Introduction to quaternary glaciations in the United States of America
Gerald M. Richmond, David S. Fullerton
1986, Quaternary Science Reviews (5) 3-10
No abstract available....
World slope map
James G. Moore, R. K. Mark
1986, Eos, Transactions, American Geophysical Union (67) 1353-1362
A colored slope map (scale 1:80,000,000) was generated from digital land and sea floor elevations at 5‐min spacings from data tapes from the National Geophysical Data Center. Slope analysis is facilitated by examining the average slope in 250‐m altitude‐depth intervals both globally and in each of eight tectonic plates. The...
Late Neogene and Quaternary coarse-fraction and carbonate stratigraphies for Site 586 on Ontong-Java Plateau and Site 591 on Lord Howe Rise
J. V. Gardner, Walter E. Dean, Lynne Bisagno, Eileen Hemphill-Haley
1986, Initial Reports of the D.S.D.P. (90) 1020-1124
Carbonate oozes recovered by hydraulic piston coring at DSDP Site 586 on Ontong-Java Plateau and Site 591 on Lord Howe Rise have carbonate contents that are consistently higher than 90% with only minor variations. Consequently, paleoceanographic signals were not recorded in detail in the carbonate contents. However, mass accumulation rates...
Rhythmic bedding in Upper Cretaceous pelagic carbonate sequences: Varying sedimentary response to climatic forcing
M.A. Arthur, D.J. Bottjer, Walter E. Dean, A.G. Fischer, D.E. Hattin, E.G. Kauffman, L.M. Pratt
1986, Geology (14) 153-156
Rhythmic bedding is a prominent feature of North American and European Upper Cretaceous pelagic carbonate sequences deposited in epicontinental and continental-edge settings. Such bedding rhythms can result from variations in carbonate productivity, terrigenous dilution, redox conditions, or bottom currents. Each type of bedding cycle is expressed differently in the stratigraphic...
