APPLICATIONS OF CATHODOLUMINESCENCE OF QUARTZ AND FELDSPAR TO SEDIMENTARY PETROLOGY.
Leslie F. Ruppert
1987, Scanning Micros (1) 63-72
Cathodoluminescence (CL), the emission of visible light during electron bombardment, was first used in sandstone petrology in the mid-1960's. CL techniques are especially useful for determining the origin and source of quartz and feldspar, two of the most common constituents in clastic rocks. CL properties of both minerals are dependent...
Concentrations of arsenic, antimony, and boron in steam and steam condensate at The Geysers, California
C. L. Smith, W. H. Ficklin, J. M. Thompson
1987, Journal of Volcanology and Geothermal Research (32) 329-341
Studies at The Geysers Geothermal Field, California indicate that under some circumstances elements that are transported in the vapor phase can become enriched in the liquid phase. Waters from two condensate traps (steam traps) on steam lines at The Geysers are enriched with arsenic, antimony, and boron compared to the...
NONHOMOGENEOUS TERMS IN THE UNSTEADY FLOW EQUATIONS: MODELING ASPECTS.
Chintu Lai, Raymond W. Schaffranek, Robert A. Baltzer
1987, Conference Paper
A study is in progress to identify the relative significance, effects, and benefits attributable to the use of one-dimensional, unsteady, open-channel, flow-simulation models employing a variety of nonhomogeneous terms in their equation formulations. Nonhomogeneous terms being analyzed include those representing bed slope, frictional resistance, nonprismatic channel geometry, lateral flow, and...
Maps showing aeromagnetic intensity, flight altitudes, and generalized aeromagnetic intensity of the Walker Lake 1 degree by 2 degrees Quadrangle, California and Nevada
Donald Plouff
1987, Miscellaneous Field Studies Map 1382-F
No abstract available....
Lead poisoning in Canada geese on Plum Island, Massachusetts (USA)
R. M. Windingstad, L. S. Hinds III
1987, Journal of Wildlife Diseases (23) 438-442
During December 1983 and early January 1984, about 200 Canada geese (Branta canadensis) died of lead poisoning at Parker River National Wildlife Refuge on Plum Island, Massachusetts. In an effort to determine the source of lead, 100 bottom samples were taken from a refuge impoundment where much of the mortality/morbidity...
Late Cretaceous-Cenozoic history of deciduousness and the terminal Cretaceous event.
J. A. Wolfe
1987, Paleobiology (13) 215-226
Deciduousness in mesic, broad-leaved plants occurred in disturbed, middle-latitude environments during the Late Cretaceous. Only in polar environments in the Late Cretaceous was the deciduous element dominant, although of low diversity. The terminal Cretaceous event resulted in wide-spread selection for plants of deciduous habit and diversification of...
Electrically heated quartz atomization cell for hydride generation-atomic absorption spectrophotometry
D. B. Hatfield
1987, Analytical Chemistry (59) 1887-1888
No abstract available....
Modes of development of slope canyons and their relation to channel and levee features on the Ebro sediment apron, off-shore northeastern Spain
S. O'Connell, William B. F. Ryan, W. R. Normark
1987, Marine and Petroleum Geology (4)
Six submarine slope canyons in an area of the northwestern Mediterranean, offshore from the Ebro River and Delta, were surveyed with bathymetric swathmapping (SeaBeam) and mid-range side-looking sonar (SeaMARC I). All of the canyons have slightly winding paths with concave-upwards gradients that are relatively steep shallower than 1,200 m. Two...
Significance of non-isotropic scattering from vegetation for geobotanical remote sensing
John W. Salisbury, N.M. Milton, P.A. Walsh
1987, International Journal of Remote Sensing (8) 997-1009
Although it has been known for quite some time that individual leaves display non-Lambertian scattering at wavelengths of strong absorption in the visible part of the spectrum, while displaying near-Lambertian behaviour at wavelengths of little absorption in the near-infrared, this is widely ignored in geobotanical remote sensing investigations. Preliminary data...
Labeling Projections on Published Maps
John P. Snyder
1987, American Cartographer (14) 21-27
To permit accurate scaling on a map, and to use the map as a source of accurate positions in the transfer of data, certain parameters - such as the standard parallels selected for a conic projection - must be stated on the map. This information is often missing on published...
FUTURE APPLICATIONS OF EXPERT SYSTEMS FOR THE EVALUATION OF ENERGY RESOURCES.
B.M. Miller
1987, Conference Paper, Society of Petroleum Engineers of AIME, (Paper) SPE
The loss of professional experience and expertise in the domain of the earth sciences may prove to be one of the most serious outcomes of the boom-and-bust cyclic nature of the volatile energy and mining industries. Promising new applications of powerful computer systems, known as 'expert systems' or 'knowledge-based systems',...
Dynamics of Mojave Desert shrub assemblages in the Panamint Mountains, California.
Robert Webb, John W. Steiger, Raymond M. Turner
1987, Ecology (68) 478-490
We studied shrub communities in the Panamint Mountains of the Mojave Desert to determine whether vegetational changes after disturbance can be characterized as succession according to modern successional theory. We found, on a variety of disturbed and undisturbed sites, that the rate of change was a function of the type...
Isotopic composition of pyrite: Relationship to organic matter type and iron availability in some North American cretaceous shales
D. L. Gautier
1987, Chemical Geology: Isotope Geoscience Section (65) 293-303
The S isotope composition of pyrite in Cretaceous shales from the Western Interior of North America is related to organic C abundance, kerogen type and Fe availability. Both calcareous and noncalcareous rocks show a correlation between S and C, but noncalcareous...
Ingestion of plastic debris by Laysan albatrosses and wedge-tailed shearwaters in the Hawaiian Islands
D.M. Fry, S.I. Fefer, L. Sileo
1987, Marine Pollution Bulletin (18) 339-343
Surveys of Laysan Albatross and Wedge-tailed Shearwaters on Midway and Oahu Island, Hawaii, identified a high proportion of birds with plastic in the upper gastrointestinal tract, representing hazards to the health of adult birds and their chicks. Fifty Laysan Albatross chicks were examined for plastic items lodged within the upper...
The mobilization of aluminum in a natural soil system: Effects of hydrologic pathways
Isabelle M. Cozzarelli, Janet S. Herman, Roderic A. Parnell Jr.
1987, Water Resources Research (23) 859-874
A two-component soil water flow model was used in conjunction with an equilibrium speciation model WATEQF to study aluminum mobility in soils of a forested watershed, White Oak Run, in the Shenandoah National Park, Virginia. Soil solution samples, taken from the O, E, B, C1, and C2horizons, were collected from...
Wolfcampian brachiopods from the Bird Spring Group, Wamp Spring area, Las Vegas Range, Clark County, Nevada
P. C. Mills, R.L. Langenheim Jr.
1987, Journal of Paleontology (61) 32-55
The Wamp Spring section of the Bird Spring Group consists of approximately 1,600 feet of carbonate rocks subdivided into a basal platy limestone member, lower cliff-forming member, and upper cliff-forming member. Triticites, Schwagerina, and Schubertella kingi in the platy limestone member indicate an early Wolfcampian age. Schwagerina, Schubertella...
Coupled vibrations of rectangular buildings subjected to normally-incident random wind loads
E. Safak, D.A. Foutch
1987, Journal of Wind Engineering and Industrial Aerodynamics (26) 129-148
A method for analyzing the three-directional coupled dynamic response of wind-excited buildings is presented. The method is based on a random vibration concept and is parallel to those currently used for analyzing alongwind response. Only the buildings with rectangular cross-section and normally-incident wind are considered. The alongwind pressures and...
Tidal and tidally averaged circulation characteristics of Suisun Bay, California
Lawrence H. Smith, Ralph T. Cheng
1987, Water Resources Research (23) 143-155
Availability of extensive field data permitted realistic calibration and validation of a hydrodynamic model of tidal circulation and salt transport for Suisun Bay, California. Suisun Bay is a partially mixed embayment of northern San Francisco Bay located just seaward of the Sacramento-San Joaquin Delta. The model employs a...
FeTi oxide mineralogy and the origin of normal and reverse remanent magnetization in dacitic pumice blocks from Mt. Shasta, California
C.A. Lawson, Gordon L. Nord Jr., D.E. Champion
1987, Physics of the Earth and Planetary Interiors (46) 270-288
Detailed mineralogical analyses and rock magnetic experiments have made it possible to directly identify the FeTi oxide phases responsible for the normal and reverse magnetic components of two dacitic pumice blocks from Mt. Shasta, California. Both samples contain a normal component carried by 100 ??m size multi-domain (MD) titanomagnetite (Usp11-24)....
An unusual pleomorphic sarcoma in a hybrid mallard
Thomas J. Roffe
1987, Journal of Wildlife Diseases (23) 334-337
An unusual pleomorphic sarcoma from a hybrid mallard (Anas platyrhynchos) is described. Rhabdomyosarcoma was considered in the original differential diagnoses but rejected due to lack of specific characteristics generally seen in these tumors. The histologic characteristics described are consistent with mammalian sarcomas recorded in the literature as malignant fibrous histiocytoma....
ESTIMATING LOW-FLOW FREQUENCIES OF UNGAGED STREAMS IN NEW ENGLAND.
S. William Wandle Jr.
1987, Conference Paper
Equations to estimate low flows were developed using multiple-regression analysis with a sample of 48 river basins, which were selected from the U. S. Geological Survey's network of gaged river basins in Massachusetts, New Hampshire, Rhode Island, Vermont, and southwestern Maine. Low-flow characteristics are represented by the 7Q2 and 7Q10...
Distribution and stability of grasslands in the Los Angeles Basin
D.O. Fruedenberger, B.E. Fish, Jon E. Keeley
1987, Bulletin of the Southern California Academy of Sciences (86) 13-26
Estimating threshold values for the land disposal of organic solvent-contaminated wastes
William R. Roy, R. A. Griffin
1987, Journal of Hazardous Materials (15) 365-376
This paper describes conceptual and mathematical modeling approaches to evaluate environmentally suitable waste management practices that prevent ground water pollution from landfill disposal of solid wastes contaminated with organic solvents. Threshold values for disposal of solid wastes contaminated with acetone, nitrobenzene, chlorobenzene, and carbon tetrachloride were estimated using a disposal...
Age-size relationships of desert tortoises (Gopherus agassizii) in southern Nevada
F.B. Turner, P.A. Medica, R.B. Bury
1987, Copeia (1987) 974-979
No abstract available....
Fluorescence spectral analysis of resinite macerals from coals of the Hanna Formation, Wyoming, U.S.A.
S.C. Teerman, J.C. Crelling, G.B. Glass
1987, International Journal of Coal Geology (7) 315-334
Flourescence spectral analysis indicates that resinite macerals from Tertiary Hanna Formation coals (Hanna Coal Field, southcentral Wyoming, U.S.A.) can be separated into five distinct groups. The first resinite group fluoresces a a medium green (in blue light); its average spectral maximum...
