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Page 4524, results 113076 - 113100

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Gold in placer deposits
Warren Yeend, Daniel R. Shawe, Kenneth L. Wier
1989, Bulletin 1857-G
Man most likely first obtained gold from placer deposits, more than 6,000 years ago. Placers account for more than two-thirds of the total world gold supply, and roughly half of that mined in the States of California, Alaska, Montana, and Idaho.Placer deposits result from weathering and release of gold from...
Hydrologic environments and water-quality characteristics at four landfills in Mecklenburg County, North Carolina, 1980-86
A.P. Cardinell, C.R. Barnes, W.H. Eddins, R. W. Coble
1989, Water-Resources Investigations Report 89-4035
A water-quality study was conducted during 1980-86 at four landfills in Mecklenburg County, North Carolina. Each landfill has a three-layered hydrogeologic system typical of the Piedmont, consisting of (1) the regolith; (2) a transition zone; and (3) unweathered, fractured crystalline bedrock. As much as 7.6 inches per year of rainfall...
Water resources data, Florida, water year 1988. Volume 3B: Southwest Florida - ground water
Water Resources Division, U.S. Geological Survey
1989, Water Data Report FL-88-3B
Water resources data for the 1988 water year in Florida consist of continuous or daily discharge for 338 streams, periodic discharge for 34 streams, miscellaneous discharge for 28 streams, continuous or daily stage for 152 streams, periodic stage for 29 streams, peak discharge for 71 streams, continuous daily tide stage...
Geochemistry of soils and shallow ground water, with emphasis on arsenic and selenium, in part of the Garrison Diversion Unit, North Dakota, 1985-87
D. A. Goolsby, R. C. Severson, S. A. Wilson, Kurt Webber
1989, Water-Resources Investigations Report 89-4104
The Garrison Diversion Unit is being constructed to transfer water from the Missouri River (Lake Sakakawea) to areas in east-central and southeastern North Dakota for expanded irrigation of agricultural lands. During initial investigations of irrigation return flows in 1969-76, the potential effects of toxic elements were considered, and the U.S....
Water quality of the West Branch Lackawaxen River and limnology of Prompton Lake, Wayne County, Pennsylvania, October 1986 through September 1987
J. L. Barker
1989, Water-Resources Investigations Report 89-4014
The water quality of the West Branch Lackawaxen River and the limnology of Prompton Lake in northeastern Pennsylvania were studied from October 1986 through September 1987 to determine past and present water-quality conditions in the basin, and to determine the possible effects of raising the lake level on the water...
Methods for determination of inorganic substances in water and fluvial sediments
Marvin J. Fishman, Linda C. Friedman
Marvin J. Fishman, editor(s)
1989, Techniques of Water-Resources Investigations 05-A1
Chapter Al of the laboratory manual contains methods used by the U.S. Geological Survey to analyze samples of water, suspended sediments, and bottom material for their content of inorganic constituents. Included are methods for determining the concentration of dissolved constituents in water, the total recoverable and total of constituents in...
Hydrogeology of the southwestern part of the town of Hempstead, Nassau County, New York
Richard K. Krulikas
1989, Water-Resources Investigations Report 85-4288
The groundwater resources of the southwestern part of the Town of Hempstead in Nassau County, NY were investigated in 1984. The area studied encompasses 85 sq mi, or 68% of the town 's 125-sq mi area. The groundwater reservoir underlying the area consists of unconsolidated gravel, sand, silt, and clay...
Calibration and use of an interactive-accounting model to simulate dissolved solids, streamflow, and water-supply operations in the Arkansas River basin, Colorado
A.W. Burns
1989, Water-Resources Investigations Report 88-4214
An interactive-accounting model was used to simulate dissolved solids, streamflow, and water supply operations in the Arkansas River basin, Colorado. Model calibration of specific conductance to streamflow relations at three sites enabled computation of dissolved-solids loads throughout the basin. To simulate streamflow only, all water supply operations were incorporated in...
Geology of the Arabian Peninsula; shield area of western Saudi Arabia
Glen F. Brown, Dwight L. Schmidt, A. Curtis Huffman Jr.
1989, Professional Paper 560-A
Western Arabia lies within the low-latitude desert of north Africa and the Middle East, the core being the Arabian segment of the African Shield. The core of complex basement rocks accounts for about 670,000 km2, or one-third of the Arabian Peninsula. Reconnaissance mapping of these crystalline rocks, together with bordering...