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Preliminary appraisal of gravity and magnetic data at Syncline Ridge, western Yucca Flat, Nevada Test Site, Nye County, Nevada
David A. Ponce, William F. Hanna
1982, Open-File Report 82-931
A gravity and magnetic study of the Syncline Ridge area was conducted as part of an investigation of argillite rocks of the Eleana Formation under consideration as a medium for the possible storage of high-level radioactive waste. Bouguer gravity anomaly data, viewed in light of densities obtained by gamma-gamma logs...
Quality of runoff from small watersheds in the Twin Cities metropolitan area, Minnesota: Hydrologic data for 1980
G. A. Payne, M. A. Ayers, R. G. Brown
1982, Open-File Report 82-504
An intensive study of nonpoint-source runoff was conducted in the Twin Cities metropolitan area in Minnesota during 1980. The purpose of the study was to determine the relationships between land use, watershed characteristics, and the quantity, quality, and timing of runoff. Discharge and water-quality data were collected at 19 sites located...
Ground-water levels in Wyoming, 1971 through part of 1980
Jess O. Ragsdale
1982, Open-File Report 82-859
Ground-water levels are measured periodically in a network of about 280 observation wells in Wyoming, mostly in areas where ground water is used in large quantities for irrigation or municipal purposes. The program is conducted by the U.S. Geological Survey in cooperation with the Wyoming State Engineer and the city...
Use of microcomputer in mapping depth of stratigraphic horizons in National Petroleum Reserve in Alaska
Thomas G. Payne
1982, Open-File Report 82-1054
REGIONAL MAPPER is a menu-driven system in the BASIC language for computing and plotting (1) time, depth, and average velocity to geologic horizons, (2) interval time, thickness, and interval velocity of stratigraphic intervals, and (3) subcropping and onlapping intervals at unconformities. The system consists of three programs: FILER, TRAVERSER, and...
Water resources of the Black Hand Sandstone Member of the Cuyahoga Formation aquifers of Mississippian age in southeastern Ohio
S.E. Norris, G.C. Mayer
1982, Open-File Report 82-170
The Black Hand Sandstone Member of the Cuyahoga Formation and associated acquifers of Mississippian age, including the Allensville Conglomerate Member of the Logan Formation, (both members of the local usage) were investigated in a 1 ,500-square-mile area in southeastern Ohio. These aquifers are the chief sources of water beneath the...
MRNIDX - Marine Data Index: Database Description, Operation, Retrieval, and Display
Valerie F. Paskevich
1982, Open-File Report 82-397
A database referencing the location and content of data stored on magnetic medium was designed to assist in the indexing of time-series and spatially dependent marine geophysical data collected or processed by the U. S. Geological Survey. The database was designed and created for input to the Geologic Retrieval and...
Water resources of the Ochlockonee River area, northwest Florida
Charles A. Pascale, Jeffry R. Wagner
1982, Open-File Report 81-1121
The Ochlockonee River area comprises about 1,420 square miles in the panhandle of northwest Florida. In 1975, the population of the area was about 48,000. Water use averaged 11.4 million gallons per day; about half was pumped from wells and half from streams.The area receives 57 inches of precipitation per...
The determination of total volatiles in rocks by loss-on-fusion
V.G. Mossotti, B. King
1982, Open-File Report 82-587
A fast and accurate technique has been developed for the determination of the total volatile content of rocks. The loss on fusion (LOF) results are comparable to the conventional time-consuming wet-chemical procedure but require no additional effort or cost when conducted as part of the usual sample preparation procedure for...
Geohydrologic reconnaissance of drainage wells in Florida; an interim report
Joel O. Kimrey, Larry D. Fayard
1982, Open-File Report 82-860
Drainage wells are used to inject surface waters directly into an aquifer, or shallow ground waters directly into a deeper aquifer, primarily by gravity. Such wells in Florida may be grouped into two broad types: (1) Surface-water injection wells, and (2) interaquifer connector wells. Surface-water injection wells are commonly used...
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...
Specific conductance and dissolved chloride concentrations of freshwater aquifers and streams in petroleum producing areas in Mississippi
S. J. Kalkhoff
1982, Open-File Report 82-353
Specific conductance and dissolved chloride reconnasissance sampling was conducted in six oil-producing areas of Mississippi during periods of low streamflow in 1980 and 1981. Water samples were collected at 224 ground-water and 190 suface-water sites. Samples from 55 surface-water and 17 ground-water sites contained dissolved chloride concentrations in excess of...