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Reconnaissance geologic map and mineral resource potential of the Gearhart Mountain Wilderness and Roadless Area (6225), Lake and Klamath counties, Oregon
George W. Walker, James Ridenour
1982, Miscellaneous Field Studies Map 1367
The Gearhart Mountain Wilderness, Lake and Klamath Counties, Oreg., is devoid of mines and mineral prospects and there are no known mining claims within the area. Furthermore, the results of this mineral appraisal indicate that there is little likelihood that commercial deposits of metallic minerals will be found in the...
Water-data program of the U.S. Geological Survey
Bruce K. Gilbert, Thomas J. Buchanan
1982, Circular 863
The U.S. Geological Survey is the principal Federal agency responsible for the collection of hydrologic data needed for the planning, development, use, and management of the Nation 's water resources. These data are the foundation necessary for conducting analytical and interpretive appraisals describing the occurrence and availability of surface and...
Water-resources studies in Utah, July 1, 1981 to June 30, 1982
1982, Open-File Report 82-643
This report summarizes the progress on water-resources studies in Utah by the U.S. Geological Survey during the period July 1, 1981, to June 30, 1982. Much of the work was done in cooperation with the State of Utah or local agencies. Additional supporting funds were transferred from other Federal agencies...
Progress report on geologic studies of the Ranger orebodies, Northern Territory, Australia
J. T. Nash, David Frishman
1982, Open-File Report 82-936
The Ranger No. 1 and No. 3 orebodies contain about 124,000 tonnes U3O8 in highly chloritized metasediments of the lower Proterozoic Cahill Formation within about 500 m of the projected sub-Kombolgie Formation unconformity. In both orebodies, oxidized and reduced uranium minerals occur chiefly in quartzose schists that have highly variable...
Flood data in West Windsor Township, Mercer County, New Jersey, through 1981 water year
D.A. Harriman, A. J. Velnich
1982, Open-File Report 82-434
Flood stages and peak discharges are described for 13 sites on streams in West Windsor Township, Mercer County, New Jersey, and surrounding areas, collected by the U.S. Geological Survey through the 1981 water year. Included are descriptions and elevations of floodmarks at 30 sites located by the West Windsor Township...
Method for estimating historical irrigation requirements from ground water in the High Plains in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
Frederick J. Heimes, Richard R. Luckey
1982, Water-Resources Investigations Report 82-40
Historical information on ground-water pumpage for irrigation is required for use with a computer model of the High Plains aquifer. Available historical data on ground-water pumpage in the High Plains were inadequate for use with the computer model. Consequently, a method was developed to estimate historical pumpage data.Two principal components...
Automation of an ion chromatograph for precipitation analysis with computerized data reduction
Arthur G. Hedley, Marvin J. Fishman
1982, Water-Resources Investigations Report 81-78
Interconnection of an ion chromatograph, an autosampler, and a computing integrator to form an analytical system for simultaneous determination of fluoride, chloride, orthophosphate, bromide, nitrate, and sulfate in precipitation samples is described. Computer programs provided with the integrator are modified to implement ionchromatographic data reduction and data storage. The liquid-flow...
Hydrology of the sand-and-gravel aquifer, southern Okaloosa and Walton Counties, northwest Florida
L. R. Hayes, D. E. Barr
1982, Water-Resources Investigations Report 82-4110
The sand-and-gravel aquifer in southern Okaloosa and Walton Counties, northwest Florida, extends from land surface to depth of 50 to 150 feet. Intervening layers of clay generally separate the aquifer into an unconfined surficial zone, composed principally of fine to medium sand, and a lower confined zone, consisting of variable...
Methodologies for extraction of dissolved inorganic carbon for stable carbon isotope studies: Evaluation and alternatives
Afifa Afifi Hassan
1982, Water-Resources Investigations Report 82-6
The gas evolution and the strontium carbonate precipitation techniques to extract dissolved inorganic carbon (DIC) for stable carbon isotope analysis were investigated. Theoretical considerations, involving thermodynamic calculations and computer simulation pointed out several possible sources of error in delta carbon-13 measurements of the DIC and demonstrated the need for experimental...