Oxidation potential and state of some vanadium ores and the relation of woody material to their deposition
Alfred Michael Pommer
1956, Trace Elements Investigations 586
Oxidation potential studies with a multiple pH-potential recorder designed and constructed for this purpose demonstrated that some uranium-vanadium ores in the Colorado Plateau were in a reduced state when deposited. Any oxidation which took place occurred after deposition. Experimental and theoretical reducing studies on fresh wood, wood degraded by burial...
Distribution of uranium in the Bisbee district, Cochise County, Arizona
Stewart R. Wallace
1956, Trace Elements Investigations 426
The Bisbee district has been an important source of copper for many years, and substantial amounts of lead and zinc ore and minor amounts of manganese ore have been mined during certain periods. The copper deposits occur both as low-grade disseminated ore in the Sacramento Hill stock and as massive...
Summary of reconnaissance for radioactive deposits in Alaska, 1945-1954, and an appraisal of Alaskan uranium possibilities
Helmuth Wedow Jr.
1956, Trace Elements Investigations 577
In the period 1945-1954 over 100 investigations for radioactive source materials were made in Alaska. The nature of these investigations ranged from field examinations of individual prospects or the laboratory analysis of significantly radioactive samples submitted by prospectors to reconnaissance studies of large districts. In this period no deposits of...
Measuring hunting pressure on Canada geese in the Flathead Valley
John J. Craighead, Dwight S. Stockstad
1956, Transactions of the North American Wildlife Conference (21) 210-238
No abstract available....
Reflecting curved-crystal X-ray spectrograph; a device for the analysis of small mineral samples
I. Adler, J. M. Axelrod
1956, Economic Geology (52) 694-701
A curved-crystal reflecting spectrometer of the type described by Birks and Brooks of the Naval Research Laboratories, but adapted for use in mineralogical studies, has been built in the Geological Survey. It has been successfully applied to the analysis of tiny crystals, zones in minerals, and individual grains in mixed-mineral...
Discussion of “Some factors affecting rates of sedimentation in the Columbia River basin”
H.E. Thomas, E.M. Flaxman, R.L. Hobba
1956, Eos, Transactions, American Geophysical Union (37) 110-112
hydrologists are generally aware of the number and complexity of the variables that are encountered in all aspects of hydrology, and the great difficulty of analyzing these factors quantitatively because of inadequacy of basic data. Because of limitations in funds, time, or scientific manpower, it is likely that the basic...
The deuterium blance of Lake Maracaibo
Irving Friedman, Daniel R. Norton, D.B. Carter, A.C. Redfield
1956, Limnology and Oceanography (1) 239-246
A balance sheet for the gains and losses of deuterium from Lake Maracaibo, using estimates based on climatological data for the exchanges of water and measurements of the deuterium content of lake water, rainfall, river flow, and Caribbean Sea water to obtain the volumes of the deuterium exchange, indicates that...
Direct radiometric measurement by gamma-ray scintillation spectrometer: Part I: Uranium And Thorium Series In Equilibrium
1956, GSA Bulletin (67) 395-404
Where uranium and thorium are in secular equilibrium with their decay products, these elements may be determined by this direct radiometric method if the materials show more than 0.01 per cent equivalent uranium. This method is based on the measurement in a scintillation spectrometer of the relative amplitude of the...
Direct radiometric measurement by gamma-ray scintillation Spectrometer: Part II: Uranium, Thorium, and Potassium in Common Rocks
Patrick M. Hurley
1956, GSA Bulletin (67) 405-412
The method described in Part I of this report has been extended to the measurement of the uranium and thorium series and potassium in common rocks, or materials of comparable activity, in which the series are in secular equilibrium. The counting rate in an additional band centered on the photopeak...
Regional gravity survey in northeastern Oklahoma and southeastern Kansas
Kenneth L. Cook
1956, Geophysics (21) 88-106
In 1948 the U. S. Geological Survey, in cooperation with the U. S. Coast and Geodetic Survey, made a regional gravity survey in northeastern Oklahoma and southeastern Kansas in connection with the studies of the deflection of the vertical. About 550 gravity stations were occupied with spacings of 5 to...
Factors controlling the concentrations of thirteen rare metals in sea-water
K.B. Krauskopf
1956, Geochimica et Cosmochimica Acta (9) 1-32
The following factors controlling the concentrations of thirteen metals (Zn, Cu, Pb, Bi, Cd, Ni, Co, Hg, Ag, Cr, Mo, W, V) in sea-water were studied:1. precipitation of insoluble compounds with ions normally present in aerated sea-water,2. precipitation of sulphides locally in reducing environments,<br...
The progressive lag of sediment concentration with flood waves
Sumner Griggs Heidel
1956, Eos, Transactions, American Geophysical Union (37) 56-66
Numerous investigations of suspended‐sediment discharge have shown that an increase in stream flow usually is accompanied by an increase in sediment concentration. The sediment‐concentration peak during a rise may precede, coincide with, or follow the water‐discharge peak. Observations on the Bighorn River in Wyoming and Montana show a progressive lag...
A preliminary report on model studies of magnetic anomalies of three-dimensional bodies
Isadore Zietz, Roland G. Henderson
1956, Geophysics (21) 794-814
Model experiments were made to devise a rapid method for calculating magnetic anomalies of three-dimensional structures. The magnetic fields of the models were determined using the equipment at the Naval Ordnance Laboratory, White Oaks, Md. An irregularly shaped mass was approximated by an array of prismatic rectangular slabs of constant...
Carbonatites: A review
W. T. Pecora
1956, GSA Bulletin (67) 1537-1556
The carbonatites are essentially carbonate-silicate rock with a great variety of other minerals. In this review the writer stresses the field and geochemical relationships of the carbonatites and alkalic igneous rocks and concludes that carbonatites were deposited by carbonatic solutions having a wide range of temperature, pressure, and concentration and...
The spectrophotometric determination of vanadium as thiocyanate in acetone-water medium
H.I. Feinstein
1956, Analytica Chimica Acta (15) 141-144
A method devised for the spectrophotometric determination of vanadium in acetone-water medium is based on the reaction between vanadium (IV) and thiocyanate. Within the concentration limits tested, Beers law is obeyed.This method is not as sensitive as the peroxide method, but the vanadium(IV)-thiocyanate reaction product shows greater absorbancy...
The spectrophotometric determination of uranium by means of the azide ion
H.I. Feinstein
1956, Analytica Chimica Acta (15) 288-291
A method has been devised for the spectrophotometric determination of uranium by means of the azide ion. The method possesses several advantages over the various thiocyanate procedures. It has a slightly higher sensitivity, an aqueous medium is used, and the reaction product is more stable. Within the concentration limits tested,...
Prediction of ground‐water levels on basis of rainfall and temperate correlations
Matthew Irvin Rorabaugh
1956, Eos, Transactions, American Geophysical Union (37) 436-441
A method for predicting ground‐water levels in the glacial‐outwash deposits in the Ohio River valley near Louisville involves development of curves by graphical correlation to define the effects of winter precipitation and winter temperature on recharge to the water table, and to determine the decline of the water table as...
Nomenclature of lower ordovician rocks of Washington County, Maryland
William Jasper Sando
1956, GSA Bulletin (67) 935-938
No abstract available....
Reservoir capacity of mississippian limestones in the hopkinsville Quadrangle, Kentucky
Eugene H. Walker
1956, GSA Bulletin (67) 1431-1440
Beds composed of oölites or of shell fragments are more soluble than beds of fine-grained or earthy limestone. Vertical crevices are most likely to develop where joints traverse the more soluble beds; bedding-plane crevices in the same beds are likely to form directly above shale partings that are somewhat thicker...
Geophysical studies in the intermontane basins in southern California
Don R. Mabey
1956, Geophysics (21) 839-853
Geophysical surveys were made by the U. S. Geological Survey in Searles Lake basin and in the Mojave Desert near Barstow, California to test the application of geophysical exploration to the study of the geologic problems associated with the intermontane basins of southern California. In Searles Lake basin a coordinated...
Numerical analysis of regional water levels to define aquifer hydrology
Robert W. Stallman
1956, Eos, Transactions, American Geophysical Union (37) 451-460
Two fundamental methods for studying aquifer hydrology are now in use. The first, applied many years ago, consists of detailed observation of aquifer inflow, outflow, and storage changes, and their variations in time. By analysis of these observations, estimates of the perennial recharge to the aquifer and other pertinent hydrologic...
Tidal fluctuations of water level observed in wells in East Tennessee
R. M. Richardson
1956, Eos, Transactions, American Geophysical Union (37) 461-462
Semidiurnal water‐level fluctuations of tidal period have been observed in wells completed in the Chickamauga limestone of Middle and Late Ordovician age in east Tennessee. The periodic oscillations of the water level are similar to fluctuations in artesian pressure that in other localities have been recognized and correlated with earth...
Subsidence of the land surface in the Tulare‐Wasco (Delano) and Los Banos‐Kettleman City area, San Joaquin Valley, California
J. F. Poland, G. H. Davis
1956, Eos, Transactions, American Geophysical Union (37) 287-296
Releveling of bench marks in 1953 and 1954 by the U. S. Coast and Geodetic Survey indicates that subsidence of the land surface has now exceeded ten feet in two areas of the San Joaquin Valley. In the Tulare‐Wasco (or Delano) area of Tulare County, subsidence which was as much...
Forecasting the dry‐weather flow of Pond Creek, Oklahoma: A progress report
William E. Clark
1956, Eos, Transactions, American Geophysical Union (37) 442-450
Pond Creek in west‐central Oklahoma drains an area of 319 sq mi above the gaging station near Fort Cobb, Caddo County. Ground water, contained in the Permian Rush Springs sandstone under water‐table conditions, moves toward the creek at an almost unchanging rate. The discharge of ground water into the creek...
Silica in hot-spring waters
Donald E. White, W. W. Brannock, K. J. Murata
1956, Geochimica et Cosmochimica Acta (10) 27-29
The silica in hot-spring waters and in a few cold waters was studied by moans of the colorimetrie ammonium-molybdate method of analysis. Murata found in 1947 that only a part of the total silica in aged samples of high-silica waters was determinable by the colorimetric method. Weitz, franck And schuchard later showed that...
