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Page 5424, results 135576 - 135600

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Preliminary investigation of the elemental variation and diagenesis of a tabular uranium deposit, La Sal Mine, San Juan County, Utah
Robert A. Brooks, John A. Campbell
1976, Open-File Report 76-287
Ore in the La Sal mine, San Juan County, Utah, occurs as a typical tabular-type uranium deposit of the-Colorado Plateau. Uranium-vanadium occurs in the Salt Wash Member of the Jurassic Morrison Formation. Chemical and petrographic analyses were used to determine elemental variation and diagenetic aspects across the orebody. Vanadium is...
Water-resources data for deep aquifers of eastern Montana
W.B. Hopkins
1976, Water-Resources Investigations Report 76-40
Water from aquifers of Mesozoic and Paleozoic age in eastern Montana is little used. This report presents maps and tables to assist in the evaluation of the water in terms of possible utility. In the southern third of eastern Montana water from the Madison Group or from the Tensleep Sandstone...
Statistical summaries of Indiana streamflow data
R.G. Horner
1976, Water-Resources Investigations Report 75-35
Complete statistical analyses are presented in tabular form for all gaging stations in Indiana, regardless of length of record. Each station analysis includes lowest and highest mean daily discharges, flow duration, statistics on normal monthly means, statistics on normal annual means, statistics on log monthly means, statistics on log annual...
Geologic map of Mars
David Holcomb Scott, M. H. Carr
1976, Open-File Report 76-573
No abstract available....
Middle Tertiary plutonism in the Santa Catalina and Tortolita Mountains, Arizona
S.C. Creasey, Norman G. Banks, R. P. Ashley, Ted G. Theodore
1976, Open-File Report 76-262
Recent reconnaissance geologic mapping in the Santa Catalina and Tortolita Mountains of southeastern Arizona, supplemented by new and published potassium-argon and fission-track ages, suggests that a large middle Tertiary (about 25 m.y.) composite batholith crops out extensively in both mountains. More than two-thirds of the batholith and the contiguous wallrocks...
Flood characteristics of streams in Owyhee County, Idaho
H. C. Riggs, W. A. Harenberg
1976, Water-Resources Investigations Report 76-88
Channel-width measurements were used to estimate annual peaks with a recurrence interval of 10 years at 79 sites in Owyhee County, Idaho, and adjacent areas. These discharges and those from 33 gaging stations are plotted on a map of the area. The map will allow the user to interpolate between...
Preliminary evaluation of the feasibility of artificial recharge in northern Qater
John Vecchioli
1976, Open-File Report 76-540
Fresh ground water in northern Qatar occurs as a lens in limestone and dolomite of Eocene age. Natural recharge from precipitation averages 17x106 cubic metres per year whereas current discharge averages 26.6x106 cubic metres per year. Depletion of storage is accompanied by a deterioration in quality due to encroachment of...
Floods in Ohio: magnitude and frequency
Earl E. Webber, William P. Bartlett
1976, Open-File Report 76-768
Techniques are presented for estimating the magnitude ant frequency of floods on Ohio streams. .Regression analysis is used to develop equations which relate physical and climatic factors of river basins to peak discharge at stream gaging stations. The equations can be used to estimate flood magnitudes with recurrence intervals from...
Documentation of finite-difference model for simulation of three-dimensional ground-water flow
Peter C. Trescott, S. P. Larson
1976, Open-File Report 76-591
User experience has indicated that the documentation of the model of three-dimensional ground-water flow (Trescott and Larson, 1975) should be expanded. This supplement is intended to fulfill that need. The original report emphasized the theory of the strongly implicit procedure, instructions for using the groundwater-flow model, and practical considerations for...