APPLICATION OF SPATIAL INFORMATION TECHNOLOGY TO PETROLEUM RESOURCE ASSESSMENT ANALYSIS.
Betty M. Miller, Michael A. Domaratz
1984, Conference Paper
Petroleum resource assessment procedures require the analysis of a large volume of spatial data. The US Geological Survey (USGS) has developed and applied spatial information handling procedures and digital cartographic techniques to a recent study involving the assessment of oil and gas resource potential for 74 million acres of designated...
Age-related mortality in a wintering population of Dunlin
B.E. Kus, P. Ashman, Gary W. Page, L. Stenzel
1984, The Auk (101) 69-73
Despite considerable evidence that juvenile shorebirds experience significantly higher annual mortality rates than adults, identification and quantification of the sources of mortality have received little attention. We found that the proportion of juvenile Dunlins (Calidris alpina) in the kills of a Merlin (Falco columbarius) one winter at...
Landslides caused by earthquakes
D. K. Keefer
1984, Geological Society of America Bulletin (95) 406-421
Data from 40 historical world-wide earthquakes were studied to determine the characteristics, geologic environments, and hazards of landslides caused by seismic events. This sample of 40 events was supplemented with intensity data from several hundred United States earthquakes to study relations between landslide...
Holocene age of the Yuha burial: Direct radiocarbon determinations by accelerator mass spectrometry
Thomas W. Stafford Jr., A.J.T. Jull, T.H. Zabel, D.J. Donahue, R.C. Duhamel, K. Brendel, C.V. Haynes Jr., J. L. Bischoff, L.A. Payen, R.E. Taylor
1984, Nature (308) 446-447
The view that human populations may not have arrived in the Western Hemisphere before about 12,000 radiocarbon yr BP1,2 has been challenged by claims of much greater antiquity for a small number of archaeological sites and human skeleton samples. One such site is the Homo sapiens sapiens cairn burial excavated...
Laboratory analysis and airborne detection of materials stimulated to luminesce by the sun
W. R. Hemphill, A.F. Theisen, R.M. Tyson
1984, Journal of Luminescence (31-32) 724-726
The Fraunhofer line discriminator (FLD) is an airborne electro-optical device used to image materials which have been stimulated to luminesce by the Sun. Such materials include uranium-bearing sandstone, sedimentary phosphate rock, marine oil seeps, and stressed vegetation. Prior to conducting an airborne survey, a fluorescence spectrometer may be used in...
Volatiles of Mount St. Helens and their origins
I. Barnes
1984, Journal of Volcanology and Geothermal Research (22) 133-146
Analyses have been made of gases in clouds apparently emanating from Mount St. Helens. Despite appearances, most of the water in these clouds does not issue from the volcano. Even directly above a large fumarole ??D and ?? 18O data indicate that only half the water can come from the...
LANDSAT M. S. S. IMAGE MOSAIC OF TUNISIA.
J. C. Boswell-Thomas
Cook Jerald J., editor(s)
1984, Conference Paper, Proceedings of the International Symposium on Remote Sensing of Environment
The Landsat mosaic of Tunisia funded by USAID for the Remote Sensing Laboratory, Soils Division, Ministry of Agriculture, Tunisia, was completed by the USGS in September 1983. It is a mixed mosaic associating digital corrections and enhancements to manual mosaicking and corresponding to the Tunisian request for high resolution and...
Heating of a fully saturated Darcian half-space: Pressure generation, fluid expulsion, and phase change
P. Delaney
1984, International Journal of Heat and Mass Transfer (27) 1327-1335
Analytical solutions are developed for the pressurization, expansion, and flow of one- and two-phase liquids during heating of fully saturated and hydraulically open Darcian half-spaces subjected to a step rise in temperature at its surface. For silicate materials, advective transfer is commonly unimportant in the liquid region; this is not...
Laboratory studies of volcanic jets
S. W. Kieffer, B. Sturtevant
1984, Journal of Geophysical Research Solid Earth (89) 8253-8268
The study of the fluid dynamics of violent volcanic eruptions by laboratory experiment is described, and the important fluid-dynamic processes that can be examined in laboratory models are discussed in detail. In preliminary experiments, pure gases are erupted from small reservoirs. The gases used are Freon 12 and Freon 22,...
Oldest (Early Tertiary) subsurface carbonate rocks of St. Croix, USVI, revealed in a turbidite-mudball.
B. H. Lidz
1984, Journal of Foraminiferal Research (14) 213-227
Ranging in age from early Eocene to early Miocene and younger, pelagic foraminifers form the major component of a phenoclastic mudball within a fossiliferous turbidite. The turibidite is part of a more than 12m-thick section of biogenic deposits of middle Miocene age.-from Author...
PROCESSING OF SCANNED IMAGERY FOR CARTOGRAPHIC FEATURE EXTRACTION.
Susan P. Benjamin, Leonard Gaydos
1984, Conference Paper
Digital cartographic data are usually captured by manually digitizing a map or an interpreted photograph or by automatically scanning a map. Both techniques first require manual photointerpretation to describe features of interest. A new approach, bypassing the laborious photointerpretation phase, is being explored using direct digital image analysis. Aerial photographs...
U-Pb zircon geochronology and geological evolution of the Halaban- Al Amar region of the eastern Arabian Shield, Kingdom of Saudi Arabia.
J. S. Stacey, D. B. Stoeser, W.R. Greenwood, L. B. Fischer
1984, Journal of the Geological Society (141) 1043-1055
U-Pb zircon model ages for eleven major units from the Halaban-Al Amar region of the eastern Arabian Shield indicate three stages of evolution: (1) plate convergence, (2) plate collision, and (3) post-orogenic intracratonic activity.Convergence occurred between the western Afif and eastern Ar Rayn plates that were separated by oceanic crust....
Thermal conductivity determinations on solid rock - a comparison between a steady-state divided-bar apparatus and a commercial transient line-source device
J.H. Sass, C. Stone, R. J. Munroe
1984, Journal of Volcanology and Geothermal Research (20) 145-153
Two apparatuses were used to measure thermal conductivities on pairs of contiguous samples from 17 specimens of solid rock: the USGS divided-bar apparatus, a steadystate comparative method, and the Shotherm "Quick Thermal Meter" (QTM), which employs a transient strip heat source. Both devices were calibrated relative to fused silica. Both...
Comparative geochronology in the reversely zoned plutons of the Bottle Lake Complex, Maine: U-Pb on zircons and Rb-Sr on whole rocks
R. A. Ayuso, Joseph G. Arth, A.K. Sinha, J. Carlson, D. R. Wones
1984, Contributions to Mineralogy and Petrology (88) 113-125
The Bottle Lake Complex is a composite granitic batholith emplaced into Cambrian to Lower Devonian metasedimentary rocks. Both plutons (Whitney Cove and Passadumkeag River) are very coarse grained hornblende and biotite-bearing granites showing petrographic and geochemical reverse zonation. Two linear whole rock Rb/Sr isochrons on xenolith-free Whitney Cove and Passadumkeag...
Geology of El Chichon volcano, Chiapas, Mexico
W. A. Duffield, R.I. Tilling, R. Canul
1984, Journal of Volcanology and Geothermal Research (20) 117-132
The (pre-1982) 850-m-high andesitic stratovolcano El Chicho??n, active during Pleistocene and Holocene time, is located in rugged, densely forested terrain in northcentral Chiapas, Me??xico. The nearest neighboring Holocene volcanoes are 275 km and 200 km to the southeast and northwest, respectively. El Chicho??n is built on Tertiary siltstone and sandstone,...
The impact of uncertainties in hydrologic measurement on phosphorus budgets and empirical models for two Colorado reservoirs.
James W. LaBaugh, T. C. Winter
1984, Limnology and Oceanography (29) 322-339
Water budgets and related chemical budgets of aquatic ecosystems commonly are interpreted without reference to uncertainties resulting from errors of measurement. The importance of such uncertainties in the use and interpretation of the phosphorus budgets of two Colorado reservoirs was determined....
Glacier mass balance and runoff research in the U.S.A.
L.R. Mayo
1984, Geografiska Annaler, Series A (66 A) 215-227
Research on glacier mass balance began in the U.S.A. about 50 years ago. More complete studies of climate, snow and ice balance, and the hydrology of glaciers were initiated for the IGY in 1957 and the IHD in 1966. Investigations included the magnitude and geographic distribution of normal...
Pedimentation versus debris-flow origin of plateau-side desert terraces in southern Utah
V. S. Williams
1984, Journal of Geology (92) 457-468
Plateau-side terraces in arid areas around the world are commonly described as pediment remnants, although, in many cases, they may have been formed by debris-flow deposition. Pediments do exist in the area of the Aquarius and Kaiparowits Plateaus of southern Utah; however, many alluvial terraces that were classified by previous...
Optimization of electrothermal atomization parameters for simultaneous multielement atomic absorption spectrometry
J. M. Harnly, Jean S. Kane
1984, Analytical Chemistry (56) 48-54
The effect of the acid matrix, the measurement mode (height or area), the atomizer surface (unpyrolyzed and pyrolyzed graphite), the atomization mode (from the wall or from a platform), and the atomization temperature on the simultaneous electrothermal atomization of Co, Cr, Cu, Fe, Mn, Mo, Ni, V, and Zn was...
Isolation of organic acids from large volumes of water by adsorption chromatography
George R. Aiken
1984, Book, National Meeting - American Chemical Society, Division of Environmental Chemistry
The concentrations of dissolved organic carbon from most natural waters ranges from 1 to 20 milligrams carbon per liter, of which approximately 75 percent are organic acids. These acids can be chromatographically fractionated into hydrophobic organic acids, such as humic substances, and hydrophilic organic acids. To effectively study any of...
A cross-fostering experiment with the Newell's race of Manx shearwater
G. Vernon Byrd, John L. Sincock, Timothy C. Elfers, D.I. Moriarty, B.G. Brady
1984, Journal of Wildlife Management (48) 163-168
No abstract available. ...
Alternative diagenetic models for cretaceous talus deposits, Deep Sea Drilling Project Site 536, Gulf of Mexico
Robert B. Halley, B. J. Pierson, Wolfgang Schlager
1984, Book chapter, Initial reports of the Deep Sea Drilling Project
Talus deposits recovered from Site 536 show evidence of aragonite dissolution, secondary porosity development, and calcite cementation. Although freshwater diagenesis could account for the petrographic features of the altered talus deposits, it does not uniquely account for isotopic or trace-element characteristics. Also, the hydrologic setting required for freshwater alteration is not easily...
Spring sapping on the lower continental slope, offshore New Jersey
James M. Robb
1984, Geology (12) 278-282
Undersea discharge of ground water during periods of lower sea level may have eroded valleys on part of the lower continental slope, offshore New Jersey. Steep-headed basins, cliffed and terraced walls, and irregular courses of these valleys may have been produced by sapping of exposed near-horizontal Tertiary strata. Joints in...
Response of avian communities to herbicide-induced vegetation changes
Michael L. Morrison, E. Charles Meslow
1984, Journal of Wildlife Management (48) 14-22
The relationships between avian communities and herbicide modification of vegetation were analyzed on early-growth clear-cuts in western Oregon that had received phenoxy herbicide treatment 1 or 4 years previously. For both 1 and 4 years post-spray, vegetation development was greater in the third height interval (> 3.0 m) on untreated...
Chemical modifications of estuarine water by a power plant using continuous chlorination
G.R. Helz, R. Sugam, A.C. Sigleo
1984, Environmental Science & Technology (18) 192-199
No abstract available....
