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A computer program for simulating geohydrologic systems in three dimensions
D.R. Posson, G. A. Hearne, J.V. Tracy, P. F. Frenzel
1980, Open-File Report 80-421
This document is directed toward individuals who wish to use a computer program to simulate ground-water flow in three dimensions. The strongly implicit procedure (SIP) numerical method is used to solve the set of simultaneous equations. New data processing techniques and program input and output options are emphasized. The quifer...
Metallogenic and tectonic significance of oxygen isotope data and whole-rock potassium-argon ages of the Nikolai Greenstone, McCarthy Quadrangle, Alaska
M.L. Silberman, E.M. MacKevett Jr., C. L. Connor, Alan Matthews
1980, Open-File Report 80-2019
The Middle and (or) Late Triassic Nikolai Greenstone, part of the allochthonous terrane of Wrangellia, is typically altered and locally metamorphosed to prehnite-pumpellyite facies with chlorite and epidote as the most common secondary minerals. Intrinsic copper content averages 155 ppm, and two types of concentrations of copper in the Nikolai...
Flood potential of Topopah Wash and tributaries, eastern part of Jackass Flats, Nevada Test Site, southern Nevada
Rulon C. Christensen, Norman E. Spahr
1980, Open-File Report 80-963
Guidelines for the evaluation of potential surface facilities for the storage of high-level radioactive wastes on the Nevada Test Site in southern Nevada include the consideration of the potential for flooding. Those floods that are considered to constitute the principal flood hazards for these facilities are the 100- and 500-year...
An economic analysis of selected strategies for dissolved-oxygen management; Chattahoochee River, Georgia
John E. Schefter, Robert M. Hirsch
1980, Professional Paper 1140
A method for evaluating the cost-effectiveness of alternative strategies for dissolved-oxygen (DO) management is demonstrated, using the Chattahoochee River, GA., as an example. The conceptual framework for the analysis is suggested by the economic theory of production. The minimum flow of the river and the percentage of the total waste...
Selected hydrologic data from the vicinity of Rayburns and Vacherie salt domes, northern Louisiana salt-dome basin
G.N. Ryals, R. L. Hosman
1980, Open-File Report 80-217
The U.S. Department of Energy is considering salt domes in northern Louisiana as possible sites for storage of nuclear waste from commercial sources. As part of this National Waste Terminal Storage (NWTS) Program, the U.S. Geological Survey is conducting a regional study of the geohydrology of the northern Louisiana salt-dome...