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Page 4663, results 116551 - 116575

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Oxidation of pyrite in coal to magnetite
A. N. Thorpe, F. E. Senftle, C.C. Alexander, F.T. Dulong
1984, Fuel (63) 662-668
When bituminous coal is heated in an inert atmosphere (He) containing small amounts of oxygen at 393–455 °C, pyrite (FeS2) in coal is partially converted to magnetite (Fe304). The maximum amount of Fe304 formed during the time of heating corresponds to 5–20% of the total pyrite present, depending on the coal...
The group separation of the rare-earth elements and yttrium from geologic materials by cation-exchange chromatography
J.G. Crock, F.E. Lichte, T.R. Wildeman
1984, Chemical Geology (45) 149-163
Demand is increasing for the determination of the rare-earth elements (REE) and yttrium in geologic materials. Due to their low natural abundance in many materials and the interferences that occur in many methods of determination, a separation procedure utilizing gradient strong-acid cation-exchange chromatography is often used to preconcentrate and isolate...
Propagation and linkage of oceanic ridge segments
David D. Pollard, Atilla Aydin
1984, Journal of Geophysical Research Solid Earth (89) 10017-10028
We have investigated the propagation of spreading ridges and the development of structures that link ridge segments using an analogy between ridges and cracks in elastic plates. The ridge-propagation force and a path factor that controls propagation direction were calculated for echelon ridge segments propagating toward each other. The ridge-propagation...
Pedimentation versus debris-flow origin of plateau-side desert terraces in southern Utah
V. S. Williams
1984, Journal of Geology (92) 457-468
Plateau-side terraces in arid areas around the world are commonly described as pediment remnants, although, in many cases, they may have been formed by debris-flow deposition. Pediments do exist in the area of the Aquarius and Kaiparowits Plateaus of southern Utah; however, many alluvial terraces that were classified by previous...
Glacier mass balance and runoff research in the U.S.A.
L.R. Mayo
1984, Geografiska Annaler, Series A (66 A) 215-227
Research on glacier mass balance began in the U.S.A. about 50 years ago. More complete studies of climate, snow and ice balance, and the hydrology of glaciers were initiated for the IGY in 1957 and the IHD in 1966. Investigations included the magnitude and geographic distribution of normal...
Midseason mapping of sunflowers using Landsat digital data
W.H. Anderson, D.O. Ohlen, S.D. Fairaizl
1984, Journal of Wildlife Management (48) 295-298
The mapping results suggest that for the midsummer Landsat data used, there was not a sufficiently reliable relationship between Landsat-derived spectral clusters and sunflowers to allow 'automated' production of useful sunflower location maps. The occurrence of sunflower pixels in all cluster classes was a consequence of the diversity in sunflower...
Water resources data, Wyoming, water year 1983
S. A. Druse, J.R. Schuette, S. J. IV Rucker
1984, Water Data Report WY-83-1
Water resources data for the 1983 water year for Wyoming consists of records of stage, discharge and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report contains discharge records for 193 gaging stations; stage and contents for...
Chemical and hydrologic assessment of the Caloosahatchee River basin, Lake Okeechobee to Franklin Lock, Florida
H. R. La Rose, B. F. McPherson
1983, Water-Resources Investigations Report 83-4126
Annual discharge (1970-79 water years) from Lake Okeechobee to the Caloosahatchee River averaged 51 percent of the total river discharge at Franklin Lock and ranged from 10 to 71 percent of total discharge. Excluding rainfall on the river surface and upstream seepage, surface and subsurface runoff from the basin accounted...
Water-quality assessment of stormwater runoff from a heavily used urban highway bridge in Miami, Florida
Donald J. McKenzie, G. A. Irwin
1983, Water-Resources Investigations Report 83-4153
Runoff from a heavily-traveled, 1.43-acre bridge section of Interstate-95 in Miami, Florida, was comprehensively monitored for both quality and quantity during five selected storms between November 1979 and May 1981. For most water-quality parameters, 6 to 11 samples were collected during each of the 5 runoff events. Concentrations of most...
Developing a state water plan: Ground-water conditions in Utah, spring of 1983
Cynthia L. Appel, L. R. Herbert, Donald A. Bischoff, Melanie E. Smith, Ralph L. Seiler, Kevin Guttormson, V.L. Jensen, Michael Enright, D. C. Emett, Carole B. Burden, R.C. Beard, L.G. Sultz, M.R. Eckenwiler, G. W. Sandberg
1983, Cooperative Investigations Report 23
This is the twentieth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...