Application of the Flory-Huggins theory to the solubility of solids in glyceryl trioleate
Cary T. Chiou, Milton Manes
1986, Journal of the Chemical Society, Faraday Transactions I (82) 243-246
The conventional thermodynamic deviation for ideal solid–liquid solubilities is modified by substituting the Flory–Huggins model for Raoult's law. A comparison of published data for eleven solides in glyceryl trioleate with the predictions of the conventional and modified equations shows that the significantly higher athermal solubilities from the modified...
Prototype operational earthquake prediction system
Henry Spall, editor(s)
1986, Earthquakes & Volcanoes (USGS) (18) 151-152
An objective if the U.S. Earthquake Hazards Reduction Act of 1977 is to introduce into all regions of the country that are subject to large and moderate earthquakes, systems for predicting earthquakes and assessing earthquake risk. In 1985, the USGS developed for the Secretary of the Interior a program for...
Seismic Computerized Alert Network
Henry Spall, editor(s)
1986, Earthquakes & Volcanoes (USGS) (18) 153-153
In 1985 the USGS devised a model for a Seismic Computerized Alert Network (SCAN) that would use continuous monitoring of seismic data from existing types of instruments to provide automatic, highly-reliable early warnings of earthquake shaking. In a large earthquake, substantial damaging ground motions may occur at great distances from...
Patterns and causes of change in a cliff swallow colony during a 17-year period
Gary L. Krapu
1986, Prairie Naturalist (18) 109-114
The number of cliff swallow (Petrochelidon pyrrhonata) nests at a farmstead in southeastern North Dakota increased at an average annual rate of 87% with house sparrow (Passer domesticus) removal during 1957-60 and 1970-72. Harassment of nesting cliff swallows by house sparrows, adult swallow mortality from cold weather in late May,...
Louisiana hydrologic atlas map no. 2: Areal extent of freshwater in major aquifers of Louisiana
Charles W. Smoot
1986, Water-Resources Investigations Report 86-4150
The areal availability of freshwater (cl content < 250 mg/L) in 14 major aquifers in Louisiana was investigated. The depth of occurrence of fresh groundwater in Louisiana is variable. The aquifers were mapped to show their areal extent from the outcrop or subcrop to the downdip limit of freshwater. Water...
Geochemical exploration for mineralized breccia pipes in northern Arizona, U.S.A.
K. J. Wenrich
1986, Applied Geochemistry (1) 469-485
Thousands of solution-collapse breccia pipe crop out in the canyons and on the plateaus of northern Arizona. Over 80 of these are known to contain U or Cu mineralized rock. The high-grade U ore associated with potentially economic concentrations of Ag, Pb, Zn, Cu, Co and Ni in some of...
Mapping nuclear craters on Enewetak Atoll, Marshall Islands
John C. Hampson
1986, Conference Paper, Proceedings International Symposium on Marine Positioning
In 1984, the U.S. Geological Survey conducted a detailed geologic analysis of two nuclear test craters at Enewetak Atoll, Marshall Islands, on behalf of the Defense Nuclear Agency. A multidisciplinary task force mapped the morphology, surface character, and subsurface structure of two craters, OAK and KOA. The field mapping techniques include...
Extractable cadmium, mercury, copper, lead, and zinc in the lower Columbia River estuary, Oregon and Washington
Gregory J. Fuhrer
1986, Water-Resources Investigations Report 86-4088
No abstract available....
Description and generalized distribution of aquifer materials in the alluvial basins of Arizona and adjacent parts of California and New Mexico
Geoffrey W. Freethey
1986, Hydrologic Atlas 663
No abstract available....
Platinum-group element geochemistry of zoned ultramafic intrusive suites, Klamath Mountains, California and Oregon
F. Gray, N.J. Page, C.A. Carlson, S. A. Wilson, R. R. Carlson
1986, Economic Geology (81) 1252-1260
Three postorogenic Alaskan-type ultramafic to mafic intrusive suites in the Klamath Mountains, ranging in age from 142 to 163 m.y. and intruding metavolcanic, metasedimentary, or ophiolitic cumulate ultramafie to gabbroic rocks, were examined for their platinum-group element content. The Lower Coon Mountain pluton consists of layered clinopyroxene-rich lithologies occurring in...
An annotated checklist of mammals of Point Reyes National Seashore
Gary M. Fellers, John Dell’Osso
1986, Book
No abstract available at this time...
A field guide to valuable underwater aquatic plants of the Great Lakes
Donald W. Schloesser
1986, Report
Underwater plants are a valuable part of the Great Lakes ecosystem, providing food and shelter for aquatic animals. Aquatic plants also help stabilize sediments, thereby reducing shoreline erosion. Annual fall die-offs of underwater plants provide food and shelter for overwintering small aquatic animals such as insects, snails, and freshwater shrimp. In...
Evaluation of a mallard productivity model
Douglas H. Johnson, L.M. Cowardin, D. W. Sparling
J. Verner, L.M. Morrison, C.J. Ralph, editor(s)
1986, Book chapter, Wildlife 2000: modeling habitat relationships of terrestrial vertebrates
A stochastic model of mallard (Anas platyrhynchos) productivity has been developed over a 10-year period and successfully applied to several management questions. Here we review the model and describe some recent uses and improvements that increase its realism and applicability, including naturally occurring changes in wetland habitat, catastrophic weather events,...
Isotopic constraints on the origin of the Atlantis II, Suakin and Valdivia brines, Red Sea
R.A. Zierenberg, Wayne C. Shanks III
1986, Geochimica et Cosmochimica Acta (50) 2205-2214
The origin of three Red Sea submarine brine pools was investigated by analysis of the S and O isotope ratios of dissolved sulfate and Sr isotope ratios of dissolved Sr in the brines. Sulfur and O isotope ratios of sulfate and Sr isotope ratios of evaporitic source rocks for the...
Suspended sediment transport in an estuarine tidal channel within San Francisco Bay, California
R.W. Sternberg, D.A. Cacchione, D.E. Drake, K. Kranck
1986, Marine Geology (71) 237-258
A recently developed instrumentation system has been used to monitor simultaneously flow conditions and suspended sediment distribution in the bottom boundary layer of a tidal channel within San Francisco Bay, California. Measurements were made every 15 min over six successive flood and ebb tidal cycles. They included mean velocity profiles...
Isotopic variation in the Tuolumne Intrusive Suite, central Sierra Nevada, California
R. W. Kistler, B. W. Chappell, D. L. Peck, P. C. Bateman
1986, Contributions to Mineralogy and Petrology (94) 205-220
Granitoid rocks of the compositionally zoned Late Cretaceous Toulumne Intrusive Suite in the central Sierra Nevada, California, have initial87Sr/86Sr values (Sri) and143Nd/144Nd values (Ndi) that vary from 0.7057 to 0.7067 and from 0.51239 to 0.51211 respectively. The observed variation of both Sri and Ndi and of chemical composition in rocks...
Transient electromagnetic sounding for groundwater
David V. Fitterman, Mark T. Stewart
1986, Geophysics (51) 995-1005
The feasibility of using the transient electromagnetic sounding (TS or TDEM) method for groundwater exploration can be studied by means of numerical models. As examples of its applicability to groundwater exploration, we study four groundwater exploration problems: (1) mapping of alluvial fill and gravel zones over bedrock; (2) mapping of...
New aromatic biomarkers and possible maturity indicators found in New Albany Shale extracts
I.-M. Chou, K.V. Wood
1986, Organic Geochemistry (9) 351-356
Aromatic hydrocarbons from benzene extracts of New Albany Shale were characterized. A biomarker that has a molecular weight of 546 and a structural configuration consistent with that of an alkyl-aromatic hydrocarbon (C40H66) was tentatively identified. It was found that the relative concentrations of the biomarker are indicative of differing levels...
Movement and fate of detergents in groundwater: A field study
E.M. Thurman, L.B. Barber Jr., D. LeBlanc
1986, Journal of Contaminant Hydrology (1) 143-161
The major cations, anions, and detergents in a plume of contaminated groundwater at Otis Air Base on Cape Cod (Mass., U.S.A.) have moved approximately 3.5 km down gradient from the disposal beds. We hypothesize that the detergents form two distinct plumes, which consist of alkyl benzene sulfonates (ABS) detergents and...
Estimation of distributional parameters for censored trace level water quality data: 2. Verification and applications
Dennis R. Helsel, Robert J. Gilliom
1986, Water Resources Research (22) 147-155
Estimates of distributional parameters (mean, standard deviation, median, interquartile range) are often desired for data sets containing censored observations. Eight methods for estimating these parameters have been evaluated by R. J. Gilliom and D. R. Helsel (this issue) using Monte Carlo simulations. To verify those findings, the same methods are...
Summary of pre-1980 tephra-fall deposits erupted from Mount St. Helens, Washington State, USA
D. R. Mullineaux
1986, Bulletin of Volcanology (48) 17-26
Mount St. Helens has been a prolific source of tephra-fall deposits for about 40 000 years. These tephra deposits (1) record numerous explosive eruptions, (2) form important regional time-stratigraphic marker beds, and (3) record repeated changes in composition within and between eruptive periods. Recognized tephra strata record more than 100...
Effect of discharge on the chlorophyll a distribution in the tidally-influenced Potomac River
J. P. Bennett, J.W. Woodward, D.J. Shultz
1986, Estuaries (9) 250-260
In the tidal Potomac River, high river discharges during the spring are associated with high chlorophylla concentrations in the following in the following summer, assuming that summertime light and temperature conditions are favorable. Spring floods deliver large loads of particulate N and P to the tidal river. This particulate N and...
Determination of total, commonality, and uniqueness of interpreted structural elements from remotely sensed data in Alaska
G.H. Rosenfield
1986, Mathematical Geology (18) 161-179
Statistical analysis is conducted to determine the unique value of real- and synthetic-aperture side-looking airborne radar (SLAR) to detect interpreted structural elements. SLAR images were compared to standard and digitally enhanced Landsat multispectral scanner (MSS) images and to aerial photographs. After interpretation of the imagery, data were cumulated by total...
Middle Devonian to Late Mississippian event stratigraphy of Overthrust belt region, western United States
Charles Sandberg, R.C. Gutschick, J.G. Johnson, F. G. Poole, W.J. Sando
1986, Annales - Societe Geologique de Belgique (109) 205-207
Twenty eustatic and epeirogenic events mainly dated by conodonts are distinguished between the Middle Devonian and the lower Upper Mississippian in Great Basin, in Rocky Mountains and in the Overthrust belt regions....
Palynological evidence for the historic expansion of juniper and desert shrubs in Arizona, U.S.A.
O.K. Davis, R. M. Turner
1986, Review of Palaeobotany and Palynology (49) 177-193
Analysis of the sediment of Pecks Lake, Yavapai County, Arizona, has permitted the first reported palynological evidence for the historic expansion of juniper and desert shrubs in the American Southwest. The palynological evidence is supported by the comparison of modern and historical photographs, which shows the regional expansion of pinyon-juniper...
