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Page 4038, results 100926 - 100950

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Direct chemical analysis of uv laser ablation products of organic polymers by using selective ion monitoring mode in gas chromatography/mass-spectrometry
Yirang Cho, H.W. Lee, S.T. Fountain, D.M. Lubman
1994, Journal of the American Society for Mass Spectrometry (5) 106-112
Trace quantities of laser ablated organic polymers were analyzed by using commercial capillary column gas chromatography/mass spectrometry; the instrument was modified so that the iaser ablation products could be introduced into the capillary column directly and the constituents of each peak in the chromatogram were identified by using a mass...
Principal reference section for part of the Eocene Ghazij Formation, Sarawan River area, Johan coal field, Balochistan, Pakistan
Edward A. Johnson, Peter D. Warwick, Intizar H. Khan, Asif N. Rana, Mohsin A. Kazim
1994, Miscellaneous Field Studies Map 2263-E
The information presented on this sheet was collected as part of a joint U.S. Geological Survey-Geological Survey of Pakistan program sponsored by the U.S. Agency for International Development. As a project within this program, the coal-bearing Ghazij Formation (Eocene) was investigated in the northeastern part of Balochistan cast and south...
Environmental conditions affecting concentrations of He, CO2, O2 and N2 in soil gases
Margaret Hinkle
1994, Applied Geochemistry (9) 53-63
The measurement of concentrations of volatile species in soil gases has potential for use in geochemical exploration for concealed ore deposits and for monitoring of subsurface contaminants. However, the interpretation of anomalies in surficial gases can be difficult because soil-gas concentrations are dependent on both meteorological and environmental conditions.For this...
Principal reference section for part of the Eocene Ghazij Formation, Moghal Mine area, Mach coal field, Balochistan, Pakistan
Edward A. Johnson, Peter D. Warwick, Intizar H. Khan, Mohsin A. Kazim
1994, Miscellaneous Field Studies Map 2263-D
The information presented on this sheet was collected as part of a joint U.S. Geological Survey-Geological Survey of Pakistan program sponsored by the U.S. Agency for International Development. As a project within this program, the coal-bearing Ghazij Formation (Eocene) was investigated in the northeastern part of Balochistan cast and south...
Distribution and variability of nitrogen and phosphorus in the alluvial, High Plains, Rush Springs, and Blaine aquifers in western Oklahoma
C.J. Becker
1994, Open-File Report 94-41
Aquifers are the primary source of water for drinking and agricultural purposes in western Oklahoma. Health concerns about consuming nitrogen and an increased reliance on ground water for drinking necessitate a better understanding of the cause and effect of contamination from nutrients. The purpose of this project was to compile...
Environmental geology of the Summitville mine, Colorado
John E. Gray, Mark F. Coolbaugh, Geoffrey S. Plumlee, William W. Atkinson
1994, Economic Geology (89) 2006-2014
Although altered and mineralized rocks at Summitville mine in Colorado contain minimal amount of sulfide minerals, acid mine problems existed primarily because of the pervasive alteration of the surrounding rocks, through hydrothermal process, to highly siliceous and argillized rocks that are incapable of buffering acidic waters during weathering. The problems...
Genesis of the West Siberian Basin and its petroleum geology: A recent interpretation
J. W. Clarke
1994, International Geology Review (36) 985-996
A prominent Western specialist on the geology of the oil and gas deposits of Russia provides an interpretation of the genesis of the West Siberian basin, relying, in part, on most recent Russian studies as well as information made available in 1994 evaluating the reserves of Russia's...