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Page 5692, results 142276 - 142300

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Ground water in Myrtle Creek - Glendale area, Douglas County, Oregon
F. J. Frank
1979, Water-Resources Investigations Report 79-8
The Myrtle Creek-Glendale area covers about 400 mi2 (1,000 km2 in Douglas County in southwestern Oregon.  Although the geologic formations of the area have low permeabilities and generally yield small amounts of water to wells, ground water is the chief source of water for domestic usse in rural parts of the...
Determination of selected anions in water by ion chromatography
Marvin J. Fishman, Grace Pyen
1979, Water-Resources Investigations Report 79-101
Ion chromatography is a rapid, sensitive, precise, and accurate method for the determination of major anions in rain water and surface waters. Simultaneous analyses of a single sample for bromide, chloride, fluoride, nitrate, nitrite, orthophosphate, and sulfate require approximately 20 minutes to obtain a chromatogram.Minimum detection limits range from 0.01...
A synoptic approach for analyzing erosion as a guide to land-use planning
William M. Brown III, Walter G. Hines, David A. Rickert, Gary L. Beach
1979, Circular 715-L
A synoptic approach has been devised to delineate the relationships that exist' between physiographic factors, land-use activities, and resultant erosional problems. The approach involves the development of an erosional-depositional province map and a numerical impact matrix for rating the potential for erosional problems. The province map is prepared by collating...
Water resources of the Marquette Iron Range area, Marquette County, Michigan
N.G. Grannemann
1979, Open-File Report 79-1339
Dependable water supplies are vital to the mining industry in the Marquette Iron Range in Michigan. Development of processes that concentrate and pelletize low-grade iron ore has permitted mining to expand during the past two decades. Water demand has increased both for iron ore concentration processes and for the area...
Formation and resulfidization of a South Texas roll-type uranium deposit
Martin B. Goldhaber, Richard L. Reynolds, Robert O. Rye
1979, Open-File Report 79-1651
Core samples from a roll type uranium deposit in Live Oak County, south Texas have been studied and results are reported for Se, Mo, FeS2 and organic-carbon distribution, sulfide mineral petrology, and sulfur isotopic composition of iron-disulfide phases. In addition, sulfur isotopic compositions of dissolved sulfate and sulfide from the...
The importance of dissolved free oxygen during formation of sandstone-type uranium deposits
Harry Clifford Granger, C. G. Warren
1979, Open-File Report 79-1603
One factor which distinguishes t, he genesis of roll-type uranium deposits from the Uravan Mineral Belt and other sandstone-type uranium deposits may be the presence and concentration of dissolved free oxygen in the ore-forming. solutions. Although dissolved oxygen is a necessary prerequisite for the formation of roll-type deposits, it is...
A study of reservoir characteristics of the Nanushuk and Colville groups, Umiat test well 11, National Petroleum Reserve in Alaska
J. E. Fox, P. W. Lambert, Janet K. Pitman, C.H. Wu
1979, Circular 820
Cretaceous sandstones in the Umiat Anticline contain the largest volume of oil discovered to date in the National Petroleum Reserve in Alaska. Umiat test well 11, although dry and abandoned, penetrated the most complete sequence of Cretaceous rocks in the Umiat area. Cretaceous formations cored (oldest to youngest) were the...
Methods for determination of inorganic substances in water and fluvial sediments
Marvin W. Skougstad, Marvin J. Fishman, Linda C. Friedman, David E. Erdmann, Saundra S. Duncan, editor(s)
1979, Techniques of Water-Resources Investigations 05-A1
Chapter Al of the manual contains methods used by the U.S. Geological Survey to collect, preserve, and analyze water samples for their content of dissolved minerals and gases. Among the topics discussed are selection of sampling sites, frequency of sampling, sampling equipment, sample preservation, laboratory equipment and instrumental techniques, accuracy...
Coastal flood of February 7, 1978, in Maine, Massachusetts, and New Hampshire
Russell A. Gadoury
1979, Water-Resources Investigations Report 79-61
On February 6-8, 1978, New England was battered by one of the most severe winter storms of record. The storm produced record snowfall in many areas of Rhode Island and Massachusetts. Spring high tides (sun and moon in such alinement as to cause the highest tides of the month), a...
Low-flow characteristics of streams in the Lake Superior Basin, Wisconsin
W.A. Gebert
1979, Water-Resources Investigations Report 79-38
Low-flow characteristics of streams in the Lake Superior basin include estimates of low-flow frequency and flow duration at 9 gaging stations, low-flow frequency at 16 low-flow partial-record stations and 38 miscellaneous sites; and a list of base-flow discharge measurement is available. The equations were determined from multiple-regression analyses that relate...
Computer retrieval of bibliographies using an editing program
G.E. Brethauer, V.L. Brokaw
1979, Open-File Report 79-1433
A simple program permits use of the text .editor 'qedx,' part of many computer systems, to input bibliographic entries and to retrieve specific entries which contain keywords of interest. Multiple keywords may be used sequentially to find specific entries....