Synchrotron radiation and its application to digital subtraction angiography
E. Rubenstein, E.B. Hughes, L.E. Campbell, R. Hofstadter, Randolph L. Kirk, T.J. Krolicki, J.P. Stone, S. Wilson, H.D. Zeman, W.R. Brody
1981, Conference Paper, Proceedings Volume 0314, Digital Radiography
The intense synchrotron radiation produced at electron storage rings provides a new source of X-rays highly suited to iodine K-edge digital subtraction angiography. The high intensity and small angular divergence permit the radiation to be monochromatized by Bragg diffraction and made available in beams of small vertical size, of arbitrary...
Economics and petroleum resource appraisal: The case of the Permian basin:
Emil D. Attanasi, T.M. Garland, J.H. Wood, William D. Dietzman, J.N. Hicks
1981, Journal of Petroleum Technology (33) 603-616
Estimates of oil and gas resources typically are presented in terms of proved and undiscovered resources. This paper presents a methodology for incorporating economic considerations into resource appraisals for petroleum basins. A cost algorithm is used to calculate estimates of the costs of finding and developing undiscovered oil and gas...
Organic geochemistry of the 9.6 km Bertha Rogers No. 1. well, Oklahoma
Leigh C. Price, Jerry L. Clayton, L.L. Rumen
1981, Organic Geochemistry (3) 59-77
Organic geochemical analyses of fine-grained rocks from the 9.590 km Bertha Rogers No. 1 well have been carried out: total organic carbon, Soxhlet extraction and silica gel chromatography, C15+ saturated and aromatic hydrocarbon gas chromatography and mass spectrometry, pyrolysis, kerogen analysis, X-ray diffraction and visual kerogen analysis.Rocks ranged in age from...
Verification of land cover maps from Landsat data
David S. Linden, John Szajgin
1981, Conference Paper, Western regional remote sensing conference proceedings, 1981
No abstract available....
Assessing accuracy of digital land use and terrain data
James A. Sturdevant
1981, Conference Paper, 80's era of change: Fall technical meeting 1981
No abstract available....
Uranium series dating of human skeletal remains from the Del Mar and Sunnyvale sites, California
J. L. Bischoff, R.J. Rosenbauer
1981, Science (213) 1003-1005
Uranium series analyses of human bone samples from the Del Mar and Sunnyvale sites indicate ages of 11,000 and 8,300 years, respectively. The dates are supported by internal concordancy between thorium-230 and protactinium-231 decay systems. These ages are significantly younger than the estimates of 48,000 and 70,000...
Tests of the assumptions underlying life table methods for estimating parameters from cohort data
David R. Anderson, A. Wywialowski, Kenneth P. Burnham
1981, Ecology (62) 1121-1124
No abstract available....
Results of a modeling workshop concerning development of the Beluga coal resource in Alaska
Peter J. McNamee, Austin K. Andrews, Gregor T. Auble, Richard A. Ellison, Richard L. Johnson, David B. Hamilton, James E. Roelle
1981, Report
No abstract available....
Crustal processes of the Mid-Ocean Ridge
Richard D. Ballard, H. Craig, J. Edmond, M. Einaudi, R. Holcomb, H.D. Holland, C.A. Hopson, B.P. Luyendyk, K. Macdonald, J. Morton, J. Orcutt, N. Sleep
1981, Science (213) 31-40
Independent geological and geophysical investigations of the Mid-Ocean Ridge system have begun to focus on the nature of the magma chamber system underlying its central axis. Thermal models predict the existence of a steady-state chamber beneath a thin crustal lid ranging in thickness from 2 to 13...
State of stress and intraplate earthquakes in the United States
Mark D. Zoback, Mary Lou Zoback
1981, Science (213) 96-104
Recently compiled data on the state of stress have been used to define stress provinces in the conterminous United States in which the orientation and relative magnitude of the horizontal principal stresses are fairly uniform. The observed patterns of stress constrain mechanisms for generating intraplate lithospheric stresses....
Processes controlling the characteristics of the surficial sand sheet, U.S. Atlantic outer continental shelf
Harley J. Knebel
1981, Marine Geology (42) 349-368
A review of recent data on the velocity of bottom currents, the frequency of bottom-sediment movement, the kinds and amounts of suspended sediments in near-bottom waters, and the acoustic and sedimentary features of subbottom strata indicates that the characteristics of the ubiquitous sand sheet on the Atlantic outer continental shelf...
Decline and present status of breeding Peregrine Falcons in Oregon
Charles J. Henny, M.W. Nelson
1981, Murrelet (62) 43-53
Unprecedented declines of the Peregrine Falcon (Falco peregrinus) throughout much of the Northern Hemisphere became apparent during the Madison Peregrine Falcon Conference in 1965 (Hickey 1969). Data from Britain were the most detailed; broken or missing eggs were much more common in 1949-56 than they had been in earlier years...
Determination of age and whelping dates of live red fox pups
Alan B. Sargeant, Stephen H. Allen, Douglas H. Johnson
1981, Journal of Wildlife Management (45) 760-765
No abstract available. ...
Foods of prairie raccoons during the waterfowl nesting season
Raymond J. Greenwood
1981, Journal of Wildlife Management (45) 754-760
No abstract available. ...
Establishing backcountry use quotas: an example from Mineral King, California
David J. Parsons, Thomas J. Stohlgren, Paul A. Fodor
1981, Environmental Management (5) 335-340
Increasing levels of visitor use and consequent resource damage have necessitated that backcountry use restrictions be established in the Mineral King area of Sequoia National Park, California. In this paper we review the steps taken in developing a trailhead quota system. The availability of acceptable campsites, based on a detailed...
How to order maps on microfilm
Water Resources Division, U.S. Geological Survey
1981, Report
The collection comprises over 120,000 maps, including some 15-minute quadrangle maps compiled by the U.S. Army Corps of Engineers, National Parks and Monument maps, River Survey maps, and selected Federal Highway Administration county planning maps. The collection will continue to grow as other types of maps are added....
A geochemical study of the Eyasi I skull; implications for the process of fossilization
James L. Bischoff
1981, Book chapter, Die archaeologischen und anthropologischen Ergebnisse der Kohl-Larsen-Expeditionen in Nord-Tanzania 1933-1939 — The palaeoanthropological finds of the Pliocene and Pleistocene
No abstract available....
Location of a caldera source for the Soldier Meadow Tuff, northwestern Nevada, indicated by gravity and aeromagnetic data: Summary
R. C. Greene, Donald Plouff
1981, GSA Bulletin (92) 4-6
No abstract available....
Location of a Caldera Source for the Soldier Meadow Tuff, Northwestern Nevada, Indicated by Gravity and Aeromagnetic Data
R. C. Greene, Donald Plouff
1981, GSA Bulletin (92) 39-57
The Soldier Meadow Tuff in north-western Nevada is part of a sequence of peralkaline and subalkaline rhyolitic rocks of Miocene age that occupies an area of about 1,600 km2 and has a volume of about 50 km3. The formation is mostly welded tuff containing abundant alkali feldspar and quartz phenocrysts in...
Overview of Mount St. Helens volcanic eruption
Robert I. Tilling
1981, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Dormant since 1857, Mount St. Helens Volcano in southwestern Washington stirred from its repose to erupt on March 27, 1980, following a week of premonitory earthquake activity. The eruption was the first in the conterminous United States since the 1914-1921 activity of Lassen Peak, California. The eruptive activity through May...
Effects of industrial effluents, heavy metals, and organic solvents on mallard embryo development
D. J. Hoffman, W. C. Eastin Jr.
1981, Toxicology Letters (9) 35-40
Mallard eggs were externally exposed at 3 and 8 days of incubation to 7 different industrial effluents and to 7 different heavy metal, organic solvent, and petroleum solutions to screen for potential embryo-toxic effects. This route of exposure was chosen in order to simulate the transfer of pollutant from the...
Environmental metal residues in tissues of canvasbacks
W. James Fleming
1981, Journal of Wildlife Management (45) 508-511
Reduction and deterioration of habitat and high nest predation have contributed to the decline of the continental populations of canvasbacks (Aythya valisineria) (Trauger 1974). Environmental metal contaminants also may adversely affect reproduction and survival of waterfowl (Heinz 1974, 1976a,b, 1979; Finley and Stendell 1978). White et al. (1979) ex-...
Geologic setting, petrology, and geochemistry of zoned tungsten-bearing skarns at the Strawberry Mine, central Sierra Nevada, California
Warren J. Nokleberg
1981, Economic Geology (76) 111-133
The Strawberry mine, 90 km northeast of Fresno, California, occurs on the margin of a small roof pendant of Early Jurassic metasedimentary rocks and middle Cretaceous metaigneous rocks. Middle Cretaceous granitic intrusions surround and intrude the roof pendant. Adjacent to one granodiorite intrusion, several subvertical marble layers are replaced by...
Use of captive starlings to determine effects of pollutants on passerine reproduction
C.E. Grue, C.L. Christian
D.W. Lamb, E.E. Kenaga, editor(s)
1981, Book chapter, Avian and Mammalian Wildlife Toxicology: Second Conference: A symposium
Three reproductive trials were conducted to develop techniques for propagation of captive starlings (Stumus vulgaris) which could determine the effects of environmental contaminants on passerine reproduction. Trials were conducted during the spring of 1979 in five adjacent 2.4 by 3 by 12-m outdoor wire pens containing four or ten pairs...
Population dynamics and bioenergetics of a fossorial herbivore, Thomomys talpoides (Rodentia: Geomyidae), in a spruce-fir sere
Douglas C. Andersen, James A. MacMahon
1981, Ecological Monographs (51) 179-202
Studies of the bioenergetics of the northern pocket gopher, Thomomys talpoides, are coupled with data on demography, activity budgets, and microclimates to model the energy requirements of individuals and populations in the Wasatch Mountains of Utah during 1976-1979. Metabolic rates during rest increased linearly with decreasing ambient temperature, but...
