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Publication Extents

Not all publications have extents, not all extents are completely accurate
Model of the ground-water flow system of the Gordo and Eutaw aquifers in west-central Alabama
Richard Alfred Gardner
1981, Open-File Report 80-422
Hydrologic conditions for a two-aquifer system consisting of the Gordo and Eutaw aquifers of Cretaceous age in west-central Alabama were simulated using a three-dimensional finite difference digital model. The model was calibrated to observed heads in the aquifers using a least squares method for obtaining the values for hydraulic parameters...
A socioeconomic assessment of the Cache Creek drilling site, Wyoming
Wyoming Research Corp.
1981, Open-File Report 81-862
This report analyzes the potential socioeconomic impacts of drilling two exploratory wells in the immediate vicinity of Jackson, Wyoming in Cache Creek Canyon and Little Granite Creek Canyon.The following conclusions are derived from a review of population projections, an analysis of secondary socioeconomic information, informal interviews of local residents, and...
Western hemisphere strong-motion accelerograph station list, 1980
J. Switzer, D. Johnson, R. Maley, R. Matthiesen
1981, Open-File Report 81-664
This list contains information on western hemisphere strong-motion stations that have been installed and are maintained by many different organizations. It contains information on all of those stations for which there is some data in the files of the USGS, but the list is incomplete even for stations in the...
Annual report of the USGS Mission, Kingdom of Saudi Arabia, for the third year of the fifth extension of the USGS-MPMR work agreement : fiscal year 1400/01, 1 Rajab 1400-30 Jumad Thani 1401 (15 May 1980-4 May 1981)
U.S. Geological Survey Saudi Arabia Mission, Saudi Arabia. Mudīrīyah al-ʻĀmmah lil-Tharwah al-Maʻdinīyah
1981, Report
An interagency report prepared by the U.S. Geological Survey Saudi Arabian Mission for the Ministry of Petroleum and Mineral Resources, Kingdom of Saudi Arabia. The work on which this report was based was performed in accordance with a cooperative agreement between the U.S. Geological Survey and the Ministry of Petroleum...
Anaerobic oxidation of acetylene by estuarine sediments and enrichment cultures
Charles W. Culbertson, Alexander J. B. Zehnder, Ronald S. Oremland
1981, Applied and Environmental Microbiology (41) 396-403
Acetylene disappeared from the gas phase of anaerobically incubated estuarine sediment slurries, and loss was accompanied by increased levels of carbon dioxide. Acetylene loss was inhibited by chloramphenicol, air, and autoclaving. Addition of 14C2H2 to slurries resulted in the formation of 14CO2 and the transient appearance of 14C-soluble intermediates, of which acetate was a major...
Hard mineral resources around the U.S continental margin
Frank T. Manheim, H.D. Hess
1981, Conference Paper, Proceedings of the Annual Offshore Technology Conference
The territorial waters surrounding the United States contain vast quantities of hard mineral resources. Some, such as sand and gravel in the New York Bight, Beaufort Sea, portions of southern California, and submerged lands near Hawaii are relatively well known and characterized by local need and immediate mining potential with...
Estimating usable resources from historical industry data
S.M. Cargill, D. H. Root, E. H. Bailey
1981, Economic Geology (76) 1081-1095
Historical production statistics are used to predict the quantity of remaining usable resources. The commodities considered are mercury, copper and its byproducts gold and silver, and petroleum; the production and discovery data are for the United States. The results of the study indicate that the...
Shear zone between the Inner Piedmont and Kings Mountain belts in the Carolinas
J. Wright Horton, Jr.
1981, Geology (9) 28-33
The Kings Mountain shear zone, which marks the boundary between the Inner Piedmont and Kings Mountain belts near the NC-SC state line, is a northeast-striking, steeply to moderately dipping zone of ductile mylonitic deformation and late-stage semibrittle deformation. The zone is at least 60 km long and is no more...
On the use of nonlinear soil models
Albert T.F. Chen
1981, Conference Paper, Proceedings: First International Conference on Recent Advances in Geochemical Earthquake Engineering and Soil Dynamics
The basic definitions of, and the differences between, currently available soil models are reviewed. These models are applied to site response analyses where two depths and two levels of base input motion are considered. Computational results are presented and compared with regard to the effects of using different soil models...
Conceptual models governing leaching behavior and their long-term predictive capability
Hans C. Claassen
1981, Nuclear and Chemical Waste Management (2) 307-313
Six models that may be used to describe the interaction of radioactive waste solids with aqueous solutions are as follows:Simple linear mass transfer;Simple parabolic mass transfer;Parabolic mass transfer with the formation of a diffusion-limiting surface layer at an arbitrary time;Initial parabolic mass transfer followed by linear mass transfer at an...
Proterozoic zircon from augen gneiss, Yukon-Tanana Upland, east-central Alaska
John N. Aleinikoff, Cynthia Dusel-Bacon, Helen L. Foster, Kiyoto Futa
1981, Geology (9) 469-473
U-Th-Pb analyses of zircons from an ortho-augen gneiss body in the Yukon-Tanana Upland of east-central Alaska yield strong evidence for the presence of early Proterozoic material in this area. U-Pb data define a chord that intersects concordia at about 2,300 and 345 m.y. We consider two interpretations: (1) the protolith...
Rectangular harmonic analysis applied to the geomagnetic field
L.R. Alldredge
1981, Journal of Geophysical Research B: Solid Earth (86) 3021-3026
Spherical harmonic analysis of the earth's magnetic field is limited in the resolution that can be obtained. This limitation is caused by inadequacies of computers and of available data sets. The fundamental wavelength in spherical harmonic analysis is the circumference of the earth. To resolve wavelengths as short as 100...