Chemical determination of particulate nitrogen in San Francisco Bay. A comparison of two estimates
S.W. Hager, D.D. Harmon
1984, Estuarine, Coastal and Shelf Science (19) 181-191
Particulate nitrogen was measured by both the ultra-violet light-catalyzed peroxide method and the high temperature combustion method. The difference between values obtained with the two methods (combustion minus UV) was found to be linearly correlated with the concentration of total suspended particulate matter (SPM) in the sample. The slope of...
Graphite sample preparation for AMS in a high pressure and temperature press
M. Rubin, B.O. Mysen, H. Polach
1984, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (5) 272-273
A high pressure-high temperature press is used to make target material for accelerator mass spectrometry. Graphite was produced from typical 14C samples including oxalic acid and carbonates. Beam strength of 12C was generally adequate, but random radioactive contamination by 14C made age measurements impractical. ?? 1984....
Intrinsic oxygen fugacity measurements on seven chondrites, a pallasite, and a tektite and the redox state of meteorite parent bodies
R. Brett, M. Sato
1984, Geochimica et Cosmochimica Acta (48) 111-120
Intrinsic oxygen-fugacity (fO2) measurements were made on five ordinary chondrites, a carbonaceous chondrite, an enstatite chondrite, a pallasite, and a tektite. Results are of the form of linear log fO2−1T">fO2−1T plots. Except for the enstatite chondrite, measured results agree well with calculated estimates by others.The tektite...
Semi-quantitative ion microprobe mass analyses of mineral-rich particles from the upper freeport coal
R. B. Finkelman, D.S. Simons, F.T. Dulong, E.B. Steel
1984, International Journal of Coal Geology (3) 279-289
An ion microprobe mass analyzer (IMMA) has been used to analyze semi-quantitatively mineral-rich coal particles from two separate facies of the Upper Freeport coal bed. Accuracy is estimated to be ∓ 20% for those elements making up more than 0.1 wt.%...
Characterization of the oil shale of the New Albany Shale in Indiana
R. K. Leininger, J.G. Hailer, N.R. Shaffer
1984, Conference Paper, Preprints
In the 1920's chemical and mineralogic characterization of the New Albany Shale (Mississippian-Devonian) in Indiana showed the dark shale to be rich in organic material and have commercial possibilities. Projects in the 1960's resulted in disparaging descriptions of exiguous fossil record, monotonous mineralogy, and intractable chemistry. Since 1978 expanded efforts...
Gold in natural water: A method of determination by solvent extraction and electrothermal atomization
J. B. McHugh
1984, Journal of Geochemical Exploration (20) 303-310
A method has been developed using electrothermal atomization to effectively determine the amount of gold in natural water within the nanogram range. The method has four basic steps: (1) evaporating a 1-L sample; (2) putting it in hydrobromic acid-bromine solution; (3) extracting the sample with methyl-isobutyl-ketone; and (4) determining the...
Radioactive disequilibria in mineralised fracture samples from two uranium occurrences in northern Sweden
John A.T. Smellie, J.N. Rosholt
1984, LITHOS (17) 215-225
Mineralised fractures from two uranium occurrences in northern Sweden were examined mineralogically and isotopically to establish the presence or absence of radioactive equilibrium that may indicate recent rock-water interaction processes based on the natural mobility of uranium (i.e.; during the last 0.5 Ma). The results show evidence of radioactive disequilibrium...
Reflectance spectroscopy: Quantitative analysis techniques for remote sensing applications
Roger N. Clark, T. L. Roush
1984, Journal of Geophysical Research (89) 6329-6340
Several methods for the analysis of remotely sensed reflectance data are compared, including empirical methods and scattering theories, both of which are important for solving remote sensing problems. The concept of the photon mean optical path length and the implications for use in modeling reflectance spectra are presented. It is...
Rearing and restoring giant Canada geese in the Dakotas
Forrest B. Lee, C.H. Schroeder, T.L. Kuck, L. Schoonover
1984, Report
Interactions of solutes and streambed sediment: 2. A dynamic analysis of coupled hydrologic and chemical processes that determine solute transport
Kenneth E. Bencala
1984, Water Resources Research (20) 1804-1814
Solute transport in streams is determined by the interaction of physical and chemical processes. Data from an injection experiment for chloride and several cations indicate significant influence of solutestreambed processes on transport in a mountain stream. These data are interpreted in terms of transient storage processes for all tracers and...
Multiple use of land and water
J.V. Huner, H.K. Dupree
Dupree H. K., Huner J. V., editor(s)
1984, Book chapter, Third Report to the Fish Farmers: The Status of Warmwater Fish Farming Research
No abstract available at this time...
DEFINITION FOR TALC.
Malcolm Ross
Levadie Benjamin, editor(s)
1984, Conference Paper, ASTM Special Technical Publication
Talc is a naturally occurring single-phase mineral having the approximate chemical formula Mg//3Si//4O//1//0(OH)//2 and a specific type of crystal structure. Talc commonly forms by hydrothermal alteration of rocks rich in magnesium and iron (ultramafic rocks) and by low-grade thermal metamorphism of siliceous dolomites. The fact that talc often occurs in...
Leaching of molybdenum and arsenic from uranium ore and mill tailings
E. R. Landa
1984, Hydrometallurgy (13) 203-211
A sequential, selective extraction procedure was used to assess the effects of sulfuric acid milling on the geochemical associations of molybdenum and arsenic in a uranium ore blend, and the tailings derived therefrom. The milling process removed about 21% of the molybdenum and 53% of the arsenic initially present in...
Rehabilitation materials from surface- coal mines in western U.S.A. III. Relations between elements in mine soil and uptake by plants.
R. C. Severson, L. P. Gough
1984, Reclamation and Revegetation Research (3) 185-197
Plant uptake of Cd, Co, Cu, Fe, Mn, Ni, Pb and Zn from mine soils was assessed using alfalfa Medicago sativa, sainfoin Onobrychis viciaefolia, smooth brome Bromus inermis, crested wheatgrass Agropyron cristatum, slender wheatgrass A. trachycaulum and intermediate wheatgrass A. intermedium; mine soil (cover-soil and spoil material) samples were collected...
Chemical oxidation of anthracite with hydrogen peroxide via the Fenton reaction
I. Heard, F. E. Senftle
1984, Fuel (63) 221-226
Solutions of 30% H2O2 ranging from pH = 0 to pH = 11.5 have been used to oxidize anthracite at room temperature. The inorganic impurities, primarily pyrite, catalysed the oxidation and reduction of H2O2 (the Fenton reaction) to form the hydroxyl radical; the oxidation of the organic matter was minimal and was observed only in strong...
Water use in the United States, 1980
Wayne Solley
1984, Report
The “anomalous cedar trees” of Lake Ashi, Hakone Volcano, Japan
Y. Oki
1984, Earthquake Information Bulletin (USGS) (16) 24-27
On the bottom of Lake Ashi at Hakone, Japan, there stand great trees that, since ancient times, have been widely known as the "Anomalous Cedar Trees" of Ashi. It is not known why these trees grow on the bottom of the lake, and it remains one of the mysteries of...
THERMAL-INERTIA MAPPING IN VEGETATED TERRAIN FROM HEAT CAPACITY MAPPING MISSION SATELLITE DATA.
Ken Watson, Susanne Hummer-Miller
1984, Conference Paper
Thermal-inertia data, derived from the Heat Capacity Mapping Mission (HCMM) satellite, were analyzed in areas of varying amounts of vegetation cover. Thermal differences which appear to correlate with lithologic differences have been observed previously in areas of substantial vegetation cover. However, the energy exchange occurring within the canopy is much...
Monitoring active volcanoes
Robert I. Tilling
1984, Report
Regional variations in the fluvial Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate, Brooks Range, Alaska
Thomas E. Moore, T. H. Nilsen
1984, Sedimentary Geology (38) 465-497
The wholly allochthonous Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate is one of the most extensive fluvial deposits in North America. It crops out for 950 km along the crest of the Brooks Range in a series of thrust plates and is as thick as 2615 m. The Kanayut forms...
Geochronological and isotopic evidence for early Proterozoic crust in the eastern Arabian Shield
J. S. Stacey, C. E. Hedge
1984, Geology (12) 310-313
We report zircon U-Pb, feldspar common Pb, whole-rock Sm-Nd, and Rb-Sr data from sample Z-103, a fine-grained granodiorite from the Jabal Khida region of the Saudi Arabian Shield (lat 21°19′N; long 44°50′W). The measurements yield conclusive evidence for continental crust of early Proterozoic...
The Kingak shale of northern Alaska—regional variations in organic geochemical properties and petroleum source rock quality
Leslie B. Magoon, George E. Claypool
1984, Organic Geochemistry (6) 533-542
The Kingak Shale, a thick widespread rock unit in northern Alaska that ranges in age from Early Jurassic through Early Cretaceous, has adequate to good oil source rock potential. This lenticular-shaped rock unit is as much as 1200 m thick near the Jurassic shelf edge, where its present-day burial depth...
Hydrology of area 56, Northern Great Plains, and Rocky Mountain Coal Provinces, Utah
Gregory C. Lines
1984, Open-File Report 83-38
No abstract available....
Effect of censoring trace-level water-quality data on trend-detection capability
R. J. Gilliom, R.M. Hirsch, E.J. Gilroy
1984, Environmental Science & Technology (18) 530-535
Monte Carlo experiments were used to evaluate whether trace-level water-quality data that are routinely censored (not reported) contain valuable information for trend detection. Measurements are commonly censored if they fall below a level associated with some minimum acceptable level of reliability (detection limit). Trace-level organic data were simulated with best-...
Use of dissolved oxygen modeling results in the management of river quality
D. A. Rickert
1984, Journal of the Water Pollution Control Federation (56) 94-101
In 1973, the U.S. Geological Survey initiated a study of the Willamette River, Oregon, to determine the major causes of dissolved oxygen (DO) depletion, and whether advanced treatment of municipal wastewaters was needed to achieve the DO standards. The study showed that rates of carbonaceous decay were low (kr =...
