CLAY MINERALOGY OF INSOLUBLE RESIDUES IN MARINE EVAPORITES.
Marc W. Bodine Jr.
1985, Conference Paper
Insoluble residues from three sequences of Paleozoic marine evaporites (Retsof salt bed in western New York, Salado Formation in south-eastern New Mexico, and Paradox Member of the Hermosa Formation in southeastern Utah) are rich in trioctahedral clays. Chlorite (clinochlore), corrensite (mixed-layer chlorite-trioctahedral smectite), talc, and illite (the only dioctahedral clay)...
Comparative study of aggregations under different dependency assumptions for assessment of undiscovered recoverable oil resources in the world
R. A. Crovelli
1985, Journal of the International Association for Mathematical Geology (17) 367-374
The U.S. Geological Survey assessed all significant sedimentary basins in the world for undiscovered conventionally recoverable crude-oil resources. Probabilistic methodology was applied to each basin assessment to produce estimates in the form of probability distributions. Basin probability distributions were computer aggregated to produce resource estimates for the entire world. Aggregation...
Temporal fluctuations in grain size, organic materials and iron concentrations in intertidal surface sediment of San Francisco Bay
E. A. Thomson-Becker, Samuel N. Luoma
1985, Hydrobiologia (129) 91-107
The physical and chemical characteristics of the oxidized surface sediment in an estuary fluctuate temporally in response to physical forces and apparently-fluctuating inputs. These characteristics, which include grain size and concentrations of organic materials and iron, will influence both trace-metal geochemistry and bioavailability. Temporal trends in the abundance of fine...
Pyrolysis-mass spectrometry/pattern recognition on a well-characterized suite of humic samples
P. MacCarthy, S.J. DeLuca, K.J. Voorhees, Ronald L. Malcolm, E.M. Thurman
1985, Geochimica et Cosmochimica Acta (49) 2091-2096
A suite of well-characterized humic and fulvic acids of freshwater, soil and plant origin was subjected to pyrolysis-mass spectrometry and the resulting data were analyzed by pattern recognition and factor analysis. A factor analysis plot of the data shows that the humic acids and fulvic acids can be segregated into...
Trace element content of gossans at four mines in the West Shasta massive sulfide district
R. F. Sanzolone, J. A. Domenico
1985, Economic Geology (80) 2206-2212
We evaluated the trace element content of gossans at four mines in the West Shasta Cu-Zn mining district in California. We found little difference in trace element content between the chipped rock rind and whole-rock gossan samples. Gossans derived from disseminated sulfides were found to have a lower trace element...
Airfall tuff in the Browns Park Formation, northwestern Colorado and northeastern Utah.
S. J. Luft
1985, Mountain Geologist (22) 110-127
Bedded airfall tuffs, mainly rhyolitic in composition and locally very thick, occur throughout the Browns Park Formation (upper Oligocene to upper Miocene) in northwestern Colorado and northeasternmost Utah. They have received only cursory attention other than for the purpose of radiometric dating. The present writer began study of the tuffs...
Removal of iron interferences by solvent extraction for geochemical analysis by atomic-absorption spectrophotometry
L. Zhou, T. T. Chao, R. F. Sanzolone
1985, Talanta (32) 475-478
Iron is a common interferent in the determination of many elements in geochemical samples. Two approaches for its removal have been taken. The first involves removal of iron by extraction with methyl isobutyl ketone (MIBK) from hydrochloric acid medium, leaving the analytes in the aqueous phase. The second consists of...
Locating CVBEM collocation points for steady state heat transfer problems
T. V. Hromadka II
1985, Engineering Analysis (2) 100-106
The Complex Variable Boundary Element Method or CVBEM provides a highly accurate means of developing numerical solutions to steady state two-dimensional heat transfer problems. The numerical approach exactly solves the Laplace equation and satisfies the boundary conditions at specified points on the boundary by means of collocation. The accuracy of...
Diversion of lava during the 1983 eruption of Mount Etna
J. P. Lockwood, R. Romano
1985, Earthquake Information Bulletin (USGS) (17) 124-133
Mankind's first known attempt to divert a lava flow was in 1669, when a flow from Mount Etna volcano threatened the Sicilian city of Catania. This attempt was largely unsuccessful, in part due to opposition by citizens of another town, Paterno. Attempts to divert lava flows from Mauna Loa Volcano...
Map of Antelope Valley-East Kern Water Agency area, California, showing ground-water subunits and areas, location of wells, and lines of equal depth to water for spring 1983
W. R. Moyle Jr., Florence M. Glenn
1985, Open-File Report 84-726
No abstract available....
40Ar/39Ar and K-Ar data bearing on the metamorphic and tectonic history of western New England
J. F. Sutter, N. M. Ratcliffe, S.B. Mukasa
1985, Geological Society of America Bulletin (96) 123-136
40Ar/39Ar ages of coexisting biotite and hornblende from Proterozoic Y gneisses of the Berkshire and Green Mountain massifs, as well as 40Ar/39Ar and K-Ar mineral and whole-rock ages from Paleozoic metamorphic rocks, suggest that the thermal peak for the dominant metamorphic recrystallization in western New England occurred 465 ± 5 m.y....
Nitrogen-isotope ratios of nitrate in ground water under fertilized fields, Long Island, New York
W.J. Flipse Jr., F.T. Bonner
1985, Groundwater (23) 59-67
Ground-water samples from two heavily fertilized sites in Suffolk County, New York, were collected through the 1978 growing season and analyzed for nitrate-N concentrations and nitrogen-isotope ratios. Six wells were at a potato farm; six were on a golf course. The purpose of this study was to determine whether the 15N/14N...
Dissolution of alkaline earth sulfates in the presence of montmorillonite
D. D. Eberl, Edward R. Landa
1985, Water, Air, & Soil Pollution (25) 207-214
In a study of the effect of montmorillonite on the dissolution of BaSO4 (barite), SrSO4 (celestite), and 226Ra from U mill tailings, it was found that: (1) More of these substances dissolve in an aqueous system that contains montmorillonite than dissolve in a similar system without clay, due to the...
TOPOGRAPHY, STRESSES, AND STABILITY AT YUCCA MOUNTAIN, NEVADA.
Henri Wolfs, William Z. Savage
1985, Conference Paper, Proceedings - Symposium on Rock Mechanics
Plane-strain solutions are used to analyze the influence of topography on the state of stress at Yucca Mountain, Nye County, Nevada. The results are in good agreement with the measured stress components obtained in drill holes by the hydraulic-fracturing technique, particularly those measured directly beneath the crest of the ridge,...
Land subsidence caused by ground water withdrawal in urban areas
T.L. Holzer, A.I. Johnson
1985, GeoJournal (11) 245-255
At least eight urban areas in the world have encountered significant economic impact from land subsidence caused by pumping of ground water from unconsolidated sediment. The areas, most of which are coastal, include Bangkok, Houston, Mexico City, Osaka, San Jose, Shanghai, Tokyo, and Venice. Flooding related to decreased ground elevation...
AQUATIC PHOTOLYSIS OF OXY-ORGANIC COMPOUNDS ADSORBED ON GOETHITE.
Marvin C. Goldberg
1985, Conference Paper, National Meeting - American Chemical Society, Division of Environmental Chemistry
Organic materials that will not absorb light at wavelengths longer than 295 nanometers (the solar wavelength cutoff) may nevertheless, undergo electron transfer reactions initiated by light. These reactions occur when the organic materials are adsorbed as ligand complexes to the surface of iron oxy-hydroxide (goethite). The adsorbed materials can be...
ON PREDICTING INFRAGRAVITY ENERGY IN THE SURF ZONE.
Sallenger Jr., Robert A. Holman
Billy L. Edge, editor(s)
1985, Conference Paper, Proceedings of the Coastal Engineering Conference
Flow data were obtained in the surf zone across a barred profile during a storm. RMS cross-shore velocities due to waves in the intragravity band (wave periods greater than 20 s) had maxima in excess of 0. 5 m/s over the bar crest. For comparison to measured spectra, synthetic spectra...
MODEL FOR SIMULATING FLOODS IN RIVERS.
Raymond W. Schaffranek
1985, Conference Paper, Simulation Series
A one-dimensional model capable of simulating flood wave propagation in a river or network of channels is presented. The computer model is programmed to provide maximum flexibility in the adaptation of channel geometry, the specification of conveyance properties, and the treatment of boundary conditions. An equation transformation procedure is employed...
STREAMFLOW LOSSES IN THE SANTA CRUZ RIVER, ARIZONA.
B. N. Aldridge
1985, Conference Paper
The discharge and volume of flow in a peak decrease as the peak moves through an 89-mile (143 km) reach of the Santa Cruz River. An average of three peaks per year flow the length of the reach. Of 17,500 acre-ft (21,600 dam**3) that entered the upstream end of the...
Possible tsunami along the northwestern coast of the United States inferred from Indian traditions
Thomas H. Heaton, Parke D. Snavely Jr.
1985, Bulletin of the Seismological Society of America (75) 1455-1460
No abstract available....
Hydrocarbon source rock evaluation of Middle Proterozoic Solor Church Formation, North American Mid-Continent Rift System, Rice County, Minnesota
J. R. Hatch, G. B. Morey
1985, American Association of Petroleum Geologists Bulletin (69) 1208-1216
Hydrocarbon source rock evaluation of the Middle Proterozoic Solor Church Formation (Keweenawan Supergroup) as sampled in the Lonsdale 65-1 well, Rice County, Minnesota, shows that: (1) the rocks are organic matter lean (24 of 25 samples have less than 0.8% organic carbon); (2) the organic matter is thermally post-mature, probably...
VOLATILIZATION OF ALKYLBENZENES FROM WATER.
R. E. Rathbun, D. Y. Tai
1985, Conference Paper, National Meeting - American Chemical Society, Division of Environmental Chemistry
Volatilization is a physical process of importance in determining the fate of many organic compounds in streams and rivers. This process is frequently described by the conceptual-two-film model. The model assumes uniformly mixed water and air phases separated by thin films of water and air in which mass transfer is...
Application of the 1:2,000,000-scale data base: A National Atlas sectional prototype
Donna M. Dixon
1985, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
A study of the potential to produce a National Atlas sectional prototype from the 1:2,000,000-scale data base was concluded recently by the National Mapping Division, U. S. Geological Survey. This paper discusses the specific digital cartographic production procedures involved in the preparation of the prototype map, as well as the...
Quantification of transit losses, and its effects on surface-water resources, Arkansas River basin, Colorado
Russell K. Livingston
1985, Conference Paper
Colorado Water Law enables downstream water users to use natural river channels to convey water from upstream storage reservoirs to downstream canals, provided an equitable charge is made for transit loss. Charging a variable transit-loss rate for delivery of winter water stored in Pueblo Reservoir has resulted in better management...
SPECTRAL REFLECTANCE METHOD TO MEASURE ACID DEPOSITION EFFECTS ON BUILDING STONE.
Marguerite J. Kingston, Cathy M. Ager
1985, Conference Paper, Technical Papers of the American Society of Photogrammetry, Annual Meeting
As part of the National Acid Precipitation Assessment Program (NAPAP), the U. S. Geological Survey is cooperating with other agencies to test the effects of acid deposition on building stone. A 10-year test-site study has been organized for the purpose of correlating possible stone deterioration with environmental factors. In Summer...
