Publications
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Munsell color value as related to organic carbon in Devonian shale of Appalachian basin
Comparison of Munsell color value with organic carbon content of 880 samples from 50 drill holes in the Appalachian basin shows that a power curve is the best fit for the data. A color value below 3 to 3.5 indicates the presence of organic carbon but is meaningless in determining the organic carbon content because a large increase in amount of organic carbon causes only a minor decrease in color v
Authors
John W. Hosterman, Sallie I. Whitlow
Economics and coal resource appraisal: strippable coal in the Illinois Basin ( USA)
Coal-resource appraisals generally describe the location and general characteristics of coal beds. Estimates are made of the average overburden depth (depth of the coal bed below the surface), bed thickness, and perhaps certain chemical properties of the coal [1]. Although such resource compilations represent an important initial step, neither they nor current estimates provide sufficient informat
Authors
E.D. Attanasi, E.K. Green
Two oil types on North slope of Alaska: Implications for exploration
Forty oil samples from across the North Slope of Alaska have been analyzed by the U.S. Bureau of Mines and the U.S. Geological Survey. Results of these analyses suggest two separate genetic oil types. The first, the Simpson-Umiat oil type, occurs in reservoir rocks of Cretaceous and Quaternary age and includes oil from seeps in the Skull Cliff, Cape Simpson, Manning Point, and Ungoon Point areas,
Authors
L. B. Magoon, G. E. Claypool
Physical factors that could restrict mineral supply
Stages in the metal supply process are affected by each of the following physical (geologic) factors: (1) geographic distribution of concentrations of potential ore minerals, (2) depth of these concentrations, (3) mineralogy, (4) grain size of the minerals, and (5) grade and (6) tonnages of the concentrations. For mineral deposits of each type in each geologic and political environment, the lowest
Authors
John H. DeYoung, Donald A. Singer
The relation between exploration economics and the characteristics of mineral deposits
No abstract available.
Authors
Donald A. Singer, D.L. Mosier
Magnetic effects of maghemitization of oceanic crust
Both theoretical considerations and available experimental results indicate that magnetic effects of maghemitization are strongly dependent on the grain size of the originally unoxidized titanomagnetite. Maghemitization of single‐domain titanomagnetite results in a decrease in coercivity, an increase in susceptibility, and a large decrease in Q ratio. Maghemitization of multidomain titanomagnetite
Authors
M. Prevot, A. Lecaille, Edward A. Mankinen
Two examples of seismic zonation in the San Francisco Bay region
The science of earthquakes in complex, requiring data and research in seismology, geology, soil mechanics, geophysics, hydrology, and engineering. Nevertheless, if earthquake hazards are to be reduced, earth science information must be translated from scientific and technical language into a form that can be effectively used by planners and decisionmakers.
Out of the need to use earth science info
Authors
W. J. Kockelman, E. E. Brabb
Research in the Geysers-Clear Lake geothermal area, Northern California
The Geysers-Clear Lake area is one of two places in the world where major vapor-dominated hydrothermal reservoirs are commercially exploited for electric power production. Because energy can be extracted more efficiently from steam than from hot water, vapor-dominated systems are preferable for electric power generation, although most geothermal electric power facilities tap water-dominated system
Geologic mapping of Kentucky: A history and evaluation of the Kentucky Geological Survey--U.S. Geological Survey Mapping Program, 1960-1978
In 1960, the U.S. Geological Survey and the Kentucky Geological Survey began a program to map the State geologically at a scale of 1:24,000 and to publish the maps as 707 U.S. Geological Survey Geologic Quadrangle Maps. Fieldwork was completed by the spring of 1977, and all maps were published by December 1978.
Geologic mapping of the State was proposed by the Kentucky Society of Professional
Authors
Earle Rupert Cressman, Martin C. Noger
Processed and interpreted U.S. Geological Survey seismic reflection profile and vertical seismic profiles, Niobrara County, Wyoming
No abstract available.
Authors
Myung W. Lee, J. J. Miller, R. T. Ryder, A. H. Balch
Processed and interpreted U.S. Geological Survey seismic reflection profile and vertical seismic profile, Powder River and Carter Counties, Montana
No abstract available.
Authors
John J. Miller, R. T. Ryder, A. H. Balch, M. W. Lee
Goals, strategies, priorities, and tasks of a national landslide hazard-reduction program
No abstract available.
Authors