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Page 5038, results 125926 - 125950

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The microzonation of the Memphis, Tennessee area
Sunil Sharma, William D. Kovacs
1980, Open-File Report 80-914
Although the probability of a major earthquake in the central U.S. is only one-tenth of the Californian events, any such event is expected to result in damage ten times greater than that anticipated in California. The city of Memphis, which is situated very close to the inferred epicenter of one...
Scintillation detectors in gamma spectral logging; geometry, absorption and calibration
Ulrich Schimschal
1980, Open-File Report 80-688
The theory for the evaluation of the effects of geometry in gamma ray absorption is developed for cylindrical scintillation detectors as applicable to borehole gamma spectrometry. The results of a laboratory experiment are shown for comparison. A calibration procedure to determine detector efficiency is given for application to borehole probes....
Preliminary report on the mineral resources of the Powderhorn Instant study area, Gunnison and Hinsdale counties, Colorado
William N. Sharp, R.A. Martin, Michael Lane
1980, Open-File Report 80-1057
The Powderhorn Instant Study Area covers approximately 51,000 acres of land under BLM administration located about 80 km (50 mi) southwest of Gunnison, Colorado. A mineral resource survey, made in 1979 by the U.S. Geological Survey and the U.S. Bureau of Mines, indicates that both the mineral potential and the...
A limnological study of 43 selected Maine lakes
Derrill J. Cowing, Matthew Scott
1980, Water-Resources Investigations Report 80-69
Federal and State legislation require the trophic classification of lakes and ponds in the State of Maine as part of a lake management program. In 1974, the State of Maine Department of Environmental Protection (DEP) adopted a preliminary set of procedures for establishing an index of lake trophic status. Also...
Chemical quality of water from community systems in New York, November 1970 to May 1975
Robert H. Cartwright, James A. Ziarno
1980, Water-Resources Investigations Report 80-77
Chemical analyses of 2,802 water samples from 784 of approximately 1,500 community water systems in the State of New York are presented. The data were collected from November 1970 to May 1975 and were originally released in a series of four U.S. Geological Survey open-file reports during the mid-1970's. The...
Calibration and potential uses of a digital water-quality model for the Arkansas River in Pueblo County, Colorado
Kimball E. Goddard
1980, Water-Resources Investigations Report 80-38
The U.S. Geological Survey conducted a 1-year study to calibrate and demonstrate the use of a steady-state water quality model for a 42-mile reach of the Arkansas River in Pueblo County, Colo. Based on the calibration, the model is capable of accurately predicting concentrations of carbonaceous biochemical oxygen demand, total...
Four reference soil and rock samples for measuring element availability in the Western Energy Regions
J.G. Crock, R. C. Severson
1980, Circular 841
Attaining acceptable precision in extractable element determinations is more difficult than in total element determinations. In total element determinations, dissolution of the sample is qualitatively checked by the clarity of the solution and the absence of residues. These criteria cannot be used for extracts. Possibilities for error are introduced in...
Annotated bibliography of spectrophotometric studies in the system U-Fe-Se-S-O-H, 1967-78
K.A. McGee, A. Jefferson Sutton, Nicholas John Susak
1980, Open-File Report 80-199
Preparation of this bibliography was originally begun to supply background information on previous ultraviolet and visible spectrophotometric studies on various chemical species thought to be important in the formation of sedimentary uranium deposits; we also thought that preparing the bibliography would help direct experimental efforts to determine the association of...
Water levels in artesian and nonartesian aquifers of Florida, 1977-78
Henry G. Healy
1980, Open-File Report 80-693
During 1977 and 1978, water levels in the Floridan aquifer throughout most of north and central peninsular Florida rose 1 to 3 feet, based on water levels measured in 380 wells selected from a network of about 5,000 observation wells for which measurements are in the files of the U.S....
Methods and applications of digital-model simulation of the Red River alluvial aquifer: Shreveport to the mouth of the Black River, Louisiana
A. H. Ludwig, J. E. Terry
1980, Water-Resources Investigations Report 79-114
The Red River Waterways Project provides for the construction of five locks and dams on the Red River from the Mississippi River to Shreveport, La. The methodology used by the U.S. Geological Survey in studying the effects of the navigation pools on the ground-water-flow regime involved digital modeling of steady-...
Estimated water use in Florida, 1977
Stanley D. Leach, Henry G. Healy
1980, Water-Resources Investigations Report 79-112
During 1977, an average of 21,466 million gallons of water was withdrawn daily for use in Florida--an increase of 6,153 million gallons per day since 1970. The 1977 daily use was 14,812 million gallons of saline water and 6,654 million gallons of freshwater. Most of the saline water, largely surface...