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Page 6157, results 153901 - 153925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Computation of peak discharge at culverts
Rolland William Carter
1957, Circular 376
Methods for computing peak flood flow through culverts on the basis of a field survey of highwater marks and culvert geometry are presented. These methods are derived from investigations of culvert flow as reported in the literature and on extensive laboratory studies of culvert flow. For convenience in computation, culvert...
Estimate of underflow in the Niobrara River Basin across the Wyoming-Nebraska state line
H. M. Babcock, Charles F. Keech
1957, Open-File Report 57-4
The purpose of this report is to estimate the amount of ground water flowing across the Wyoming-Nebraska State line within the Niobrara Rive basin and to evaluate the accuracy of that estimate. The approximate effort involed in obtaining additional data to determine the underflow more accurately also is discussed. This report...
The role of lead and excess oxygen in uranite
Robert Morris Berman
1957, Open-File Report 57-11
Analysed samples of uraninite were x-rayed, annealed by heating to 550° and 900° for various times in a nitrogen atmosphere, and x-rayed again. A decrease in unit cell size was generally observed. Calculations on the basis of Vegard's Law showed that the ordering of the interstitial oxygen ions could account...
The application, technique, and theory of Gish-Rooney instruments, methods, and interpretation in electrical resistivity measurements
H. Cecil Spicer
1957, Open-File Report 58-99
The foundations of electrical prospecting were laid by Fox (1830) and Barus (1882). The former discovered that electrical currents and potentials were developed by certain ore deposits in Cornwall, England. Fox made measurements of these potentials and determined the resistivities of the minerals and surrounding rocks also. The latter, invented...
A field method for the determination of calcium and magnesium in limestone and dolomite
Leonard Shapiro, Walter Wallace Brannock
1957, Open-File Report 57-99
The method is an adaptation of a procedure described by Betz and Noll1 in 1950. Calcium and magnesium are determined by visual titration using Versene (disodium ethylenediamine tetraacetate) with Murexide (ammonium purpurate) as the indicator for calcium and Eriochrome Black T as the indicator for magnesium....
Glacial features and surficial deposits of the Malaspina district, Alaska
George Plafker, Don John Miller
1957, Open-File Report 57-91
The Malaspina district extends about 50 miles along the north shore of the Gulf of Alaska from Icy Bay and the Guyot Glacier on the west to Yakutat Bay and Disenchantment Bay on the east (see index map). The district includes a coastal lowland flanked on the north by a...
Geology of the Basin Quadrangle, Montana
Edward Thompson Ruppel
1957, Open-File Report 58-87
The Basin quadrangle, in the northern part of the Boulder Mountains between Butte and Helena, Montana, is underlain principally by igneous rocks that include Late Cretaceous quartz latitic and andesitic Elkhorn Mountains volcanics, quartz monzonite and related rocks of the Boulder batholith, Oligocene(?) quartz latitic volcanic rocks, and late Miocene(?)-early...
Geology of possible petroleum provinces in Alaska
Don John Miller, Thomas G. Payne, George Gryc
1957, Open-File Report 57-72
The history of petroleum exploration in Alaska and the geology of possible petroleum provinces in Alaska are reviewed. Maps showing Alaska's major Mesozoic and Tertiary tectonic elements, possible petroleum provinces, and indications of petrol, are included in this report. Annotated references in Geological Survey publications relating to petroleum and oil...