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Page 6798, results 169926 - 169950

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Publication Extents

Not all publications have extents, not all extents are completely accurate
River meanders
Luna Bergere Leopold, M. Gordon Wolman
1960, Geological Society of America Bulletin (71) 769-793
Most river curves have nearly the same value of the ratio of curvature radius to channel width, in the range of 2 to 3. Meanders formed by meltwater on the surface of glaciers, and by the main current of the Gulf Stream, have a relation of meander length to...
A primer on water
Luna Bergere Leopold, Walter Basil Langbein
1960, Report
When you open the faucet you expect water to flow. And you expect it to flow night or day, summer or winter, whether you want to fill a glass or water the lawn. It should be clean and pure, without any odor.You have seen or read about places where the...
How volcanoes grow
J. P. Eaton, K. J. Murata
1960, Science (132) 925-938
Geology, geochemistry, and geophysics disclose the constitution and eruption mechanism of Hawaiian volcanoes....
Potentiometric titration and equivalent weight of humic acid
A. M. Pommer, Irving A. Breger
1960, Geochimica et Cosmochimica Acta (20) 30-44
The “acid nature” of humic acid has been controversial for many years. Some investigators claim that humic acid is a true weak acid, while others feel that its behaviour during potentiometric titration can be accounted for by colloidal adsorption of hydrogen ions. The acid character of humic acid has been...
Diagenesis of metabolites and a discussion of the origin of petroleum hydrocarbons
Irving A. Breger
1960, Geochimica et Cosmochimica Acta (19) 297-308
Proteins and carbohydrates are rapidly degraded to compounds of no direct interest in the problem of the origin of petroleum. Lignin, if carried into marine basins in the form of humic substances, is probably the major progenitor of kerogen rather than the precursor of petroleum. Pigments are but minor contributors...
Automatic measurements and computations for radiochemical analyses
J. N. Rosholt, J. R. Dooley Jr.
1960, Analytical Chemistry (32) 1093-1098
In natural radioactive sources the most important radioactive daughter products useful for geochemical studies are protactinium-231, the alpha-emitting thorium isotopes, and the radium isotopes. To resolve the abundances of these thorium and radium isotopes by their characteristic decay and growth patterns, a large number of repeated alpha activity measurements on...
Characteristic constants of 2,2',4'-trihydroxyazobenzene-5-sulfonic acid, a reagent for spectrophotometric analysis
Mary H. Fletcher
1960, Analytical Chemistry (32) 1822-1827
The dye 2,2',4'-trihydroxyazobenzene-5-sulfonic acid, has shown promise as a reagent for the determination of zirconium. As the literature contains very little information about this dye, basic data pertinent to its use as a reagent were determined. The sulfonic acid group and all three of the hydroxy groups show acidic characteristics....
First natural occurrence of coesite
E. C. T. Chao, E.M. Shoemaker, B.M. Madsen
1960, Science (132) 220-222
Coesite, the high-pressure polymorph of SiO2, hitherto known only as a synthetic compound, is identified as an abundant mineral in sheared Coconino sandstone at Meteor Crater, Arizona. This natural occurrence has important bearing on the recognition of meteorite impact craters in quartz-bearing geologic formations....
Effect of FeS on the unit cell edge of sphalerite, a revision
Brian J. Skinner, P. B. Barton Jr., G. Kullerud
1959, Economic Geology (54) 1040-1046
Redeterminations of the relation between the composition and unit-cell size of Fe-bearing sphalerites, necessitated because of partial oxidation of the FeS sample used in earlier measurements, are presented. It is noted that the Fe-ZnS solvus curve may also require revision and should be used with caution, particularly for temperature determinations...
Dry diets for Chinook salmon
Walter E. Neilson, J. J. Mazuranich
1959, Progressive Fish-Culturist (21) 86-88
The purpose of this paper is to present the results obtained with seven different diets used as starting diets of chinook salmon fry....
Etiology of sockeye salmon 'virus' disease
Raymond W. Guenther, S.W. Watson, R.R. Rucker, A. J. Ross
1959, Special Scientific Report - Fisheries 296
Violent epizootics among hatchery reared sockeye salmon fingerlings (Oncorhynchus nerka) caused by a filterable agent have occurred. In 1954, one source of this infectious, filterable agent was found to be adult sockeye viscera used in the diet for the fingerlings. The results of observations on an epizootic in 1958 indicate...
Vibrio infections among marine and fresh-water fish
Robert R. Rucker
1959, Progressive Fish-Culturist (21) 22-25
In 1951. B. J. Earpio found a vibrio infection among salmon fingerlings being reared in saltwater at the Deception Pass Biological Station of the Washington State Department of Fisheries. The disease waa characterized by erythema at the base of fins and on the sides of the fish, necrotic areas in...
Geological investigations in the U12b.03 and U12b.04 tunnels, Nevada Test Site
W.H. Diment, V. R. Wilmarth, F. A. McKeown, D.D. Dickey, E. N. Hinrichs, T. Botinelly, C. H. Roach, F. M. Byers, C. C. Hawley, G. A. Izett, Alfred Clebsch
1959, Trace Elements Memorandum 996
The papers comprising the various parts of this report contain preliminary results of the U. S. Geological Survey investigations in the U12b.03 and U12b.04 tunnels at the Nevada Test Site, Nye County, Nevada (fig. 1). The geologic studies were undertaken to define the structural, chemical, mineralogic, and some of the...