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Page 4993, results 124801 - 124825

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Chemical analyses of stream deposits in the West Pioneer Mountains, Beaverhead County, Montana
David F. Siems, Eric P. Welsch, Wendy S. Speckman
1980, Open-File Report 80-309
The U.S. Geological Survey commenced a mineral-resource assessment of the West Pioneer Mountains, Montana in 1970. The study consists of coordinated geological, geochemical, and geophysical studies with the objective of evaluating the potential for mineral deposits in the area. The geochemical survey consists of the collection of bulk stream sediments...
Water resources of the Walker River Indian Reservation, west-central Nevada
Donald H. Schaefer
1980, Open-File Report 80-427
Increasing interest in expanding the livestock and agricultural operations on the Walker River Indian Reservation, Nev., has prompted the Walker River Paiute Tribe to have the present and available water resources of the reservation appraised and proposed sites for new wells evaluated. Flow of the Walker River into the reservation...
High-resolution seismic-reflection profiling data from the inner continental shelf of southeastern Massachusetts
Charles J. O’Hara
1980, Open-File Report 80-178
Six hundred-seventy kilometers of closely spaced high-resolution seismic-­reflection data have been collected from eastern Rhode Island Sound and Vineyard Sound, Mass, by the U.S. Geological Survey in cooperation with the Massachusetts Department of Public Works. These data were obtained during the June 1975 cruise of the R/V ASTERIAS as part...
Seismic evidence for an extensive gas-bearing layer at shallow depth, offshore from Prudhoe Bay, Alaska
Gary Wynn Boucher, Erk Reimnitz, Edward W. Kempema
1980, Open-File Report 80-809
High resolution seismic reflection data recorded offshore from Prudhoe Bay, Alaska, were processed digitally to determine the reflectivity structure of the uppermost layers of the seafloor. A prominent reflector found at 27 m below the mudline (water depths 7-9 m) has a negative reflection coefficient greater than 0.5. The large...
Water quality of Indian Creek-Van Buren watershed, Iowa and Missouri
Larry J. Slack, Mark G. Detroy
1980, Open-File Report 80-677
Generally, the water quality of Indian Creek-Van Buren watershed is suitable as a source of Municipal, industrial and agricultural water supply and for fish and wildlife. This suitability is based upon comparisons of the existing water quality of Indian Creek to Federal and State water quality standards and criteria developed for the protection of water sources...
Bulletin of the Seismological Laboratory for the period from 1 January 1975 to 31 December 1979
G.M. Smith, F.D. Ryall
1980, Open-File Report 81-231
This issue of the Bulletin of the Seismological Laboratory summarizes the determination of epicenters for earthquakes located in the western Great Basin, Nevada and eastern California, for the period 1975-1979. The Laboratory attempts to identify and locate all earthquakes with ML greater than about 2.5 in this region. Quality of...
Seismic damage assessment for high-rise buildings
Roger E. Scholl
1980, Open-File Report 81-381
The problem considered in this project, conducted by URS/John A. Blume & Associates, Engineers (URS/Blume), for the U.S. Geological Survey, is the identification, evaluation, and correlation of ground-motion and structural parameters in order to improve procedures for predicting dollar losses for high-rise structures damaged by earthquakes. Ground-motion data bases, analytical...
Long-term highwall stability in the northwestern Powder River basin, Wyoming and Montana
William K. Smith
1980, Open-File Report 80-1229
Time-dependent behavior of natural and and excavated slopes in sedimentary rocks is a subject that is poorly understood at present but that is now an important consideration in the design, operation, and reclamation of energy-extraction facilities, in part because of the environmental considerations mandated by the Surface Mining Control and...