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Geochemical orientation for mineral exploration in the Hashemite Kingdom of Jordan
W.C. Overstreet, D. J. Grimes, J. F. Seitz
1982, Open-File Report 82-791
This report is a supplement to previous accounts of geochemical exploration conducted in the Hashemite Kingdom of Jordan by the Natural Resources Authority of the Royal Government of Jordan and the U.S. Geological Survey. The field work on which this report is based was sponsored by the U.S. Agency for...
Disturbed zones: Indicators of deep-seated subsurface faults in the Valley and Ridge and Appalachian structural front of Pennsylvania
Howard A. Pohn, Terri L. Purdy
1982, Open-File Report 82-967
Field studies of geologic structures in the Valley and Ridge and adjacent parts of the Appalachian Plateau provinces in Pennsylvania have shown a new type of structure, formerly poorly understood and frequently unmapped, is a significant indicator of deep-seated subsurface faulting. These structures, herein called disturbed zones, are formed by...
Radioactivity and geochemistry of selected mineral-spring waters in the Western United States; basic data and multivariate statistical analysis
J.K. Felmlee, R. A. Cadigan
1982, Open-File Report 82-324
Multivariate statistical analyses were performed on data from 156 mineral-spring sites in nine Western States to analyze relationships among the various parameters measured in the spring waters. Correlation analysis and R-mode factor analysis indicate that three major factors affect water composition in the spring systems studied: (1) duration of water...
Quality of water in Luxapallia Creek at Columbus, Mississippi
Stephen J. Kalkhoff
1982, Open-File Report 82-373
A quality-of-water study was conducted on September 9-12, 1979, on Luxapallila Creek and its tributaries, Magby and McCrary Creeks. The short term study indicated that the water in Luxapallila, Magby, and McCrary Creeks is suitable for many purposes.The dissolved-oxygen concentration, temperature, and pH of the water in Luxapallila Creek changed...
Ground-water levels and water quality in an area near Topaz Lake, Douglas County, Nevada
Jon O. Nowlin
1982, Open-File Report 80-2046
Intensive residential development of land along the northwest shore of Topaz Lake has raised concern regarding the adequacy of the water supply and possible effects of septic-tank effluents on the quality of local ground water and the lake. Existing data on water levels, well construction, and water quality were compiled,...
Prediction of earthquake response spectra
W. B. Joyner, David M. Boore
1982, Open-File Report 82-977
We have developed empirical equations for predicting earthquake response spectra in terms of magnitude, distance, and site conditions, using a two-stage regression method similar to the one we used previously for peak horizontal acceleration and velocity. We analyzed horizontal pseudo-velocity response at 5 percent damping for 64 records of 12...
Silver Plume Granite; possible source of uranium in sandstone uranium deposits, Tallahassee Creek and High Park areas, Fremont and Teller counties, Colorado
F. A. Hills, K. A. Dickinson
1982, Open-File Report 82-404
Anomalously high concentrations of thorium and of the light rare earth elements lanthanum and cerium suggest that the actinides and light lanthanides were enriched to an abnormal degree by the magmatic processes that formed the Proterozoic Y Silver Plume Granite in areas adjoining Tallahassee Creek and High Park. However, no...
Occurrences of copper minerals in Alaska
1982, Open-File Report 82-1029
The following references give data, as of June 1, 1982, on localities where copper minerals have been found in Alaska. References are keyed by number to locations shown on the accompanying map. An asterisk (*) preceding a locality name indicates recorded production.In most instances the report(s) cited for each occurrence...
Estimation of response-spectral values as functions of magnitude, distance, and site conditions
W. B. Joyner, David M. Boore
1982, Open-File Report 82-881
We have developed empirical predictive equations for the horizontal pseudo-velocity response at 5-percent damping for 12 different periods from 0.1 to 4.0 s. Using a multiple linear-regression method similar to the one we used previously for peak horizontal acceleration and velocity, we analyzed response spectra period by period for 64...
Directory of assistance centers of the National Water Data Exchange (NAWDEX)
Beverly M. Josefson, Cassandra D. Blackwell
1982, Open-File Report 82-925
The National Water Data Exchange (NAWDEX), managed by the U.S. Geological Survey, has established a network of Assistance Centers throughout the United States and Puerto Rico to assist users of water data in identifying and locating the data they need. This Directory provides the information needed to contact any of...
Baseline water-quality data for sand-plain aquifers in Hubbard, Morrison, Otter Tail, and Wadena counties, Minnesota
C. F. Myette
1982, Open-File Report 82-909
Tapping the surficial sand-plain aquifers in west-central Minnesota has raised the possibility for degradation of water quality. The sand-plain areas are generally overlain by sandy soils that permit rapid infiltration of precipitation and, possibly, of surface contaminants. One hundred twenty-five wells were sampled in Hubbard, Morrison, Otter Tail, and Wadena...
Flood of October 8, 1977 in St. Croix, U.S. Virgin Islands
Karl G. Johnson, Ramon A. Carrasquillo, Ralph Gonzalez
1982, Open-File Report 82-262
Severe flooding throughout St. Croix, United States Virgin Islands occurred on October 8, 1977. A tropical storm moving across the island produced as much as 16 inches of precipitation. The most affected areas were near Frederiksted, Mon Bijou, and the Airport. The peak discharge of River Gut near the Airport...