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Geology topics

M.E. Thompson

Publications and source records attributed to M.E. Thompson.

14 recordsLinked to original sources
USGS1962

Glass electrodes sensitive to divalent cations

Glass electrodes suitable for measurement of divalent cations have been made and tested. Empirical and theoretical electrode equations have been presented to describe electrode behavior in a variety of aqueous solutions. Most electrodes show response interpretable as showing nearly ideal solid-solution behavior of the cations in the glass surface. The electrodes should be useful in the measurement of divalent-cation activities in natural waters and biological fluids, and useful in general analytical chemistry.

Science↗
USGS1954

Identification and occurrence of uranium and vanadium minerals from the Colorado Plateaus

This report, designed to make available to field geologists and others informa- tion obtained in recent investigations by the Geological Survey on identification and occurrence of uranium minerals of the Colorado Plateaus, contains descriptions of the physical properties, X-ray data, and in some instances results of chemical and spectrographic analysis of 48 uranium and vanadium minerals. Also included is a list of locations of mines from which the minerals have been identified.

Bulletin↗
USGS1954

Further studies of the distribution of uranium in rich phosphate beds of the Phosphoria formation

Five sets of 'close' samples (narrow and contiguous samples across a lithologic unit) from beds of high phosphate content of the Phosphoria. formation in Idaho, Utah, and Wyoming were analyzed chemically for F and C02. Very good correlations between F, C032, and P205 were found in several of the samples. The size of phosphate pellets was measured in thin sections of two sets of close samples. Frequency histograms and cumulative curves were plotted from these size measurements, but when compared with uranium concentration for each sample, no significant correlation between size and uranium concentration was discovered. Analyses of these samples for P2O5, CaO, organic matter, and equivalent ura- nium are presented in a previous report by this writer (U. S. Gool. Survey Bull. 988-D). In two sets of samples a good correlation was found between equivalent uranium and each of the other components. The samples in these two sets have a uranium content that is relatively high for the Phosphoria formation, and they show considerable range in P205 content.

Bulletin↗
USGS1953

Stratigraphic sections of the Phosphoria formation in Idaho, 1949, part 1

The U. S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Idaho and other western states. These data. will not be fully synthesized and analyzed for several years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as they are assembled. This report, which contains abstracts -of many of the sections measured in southeastern Idaho (fig. 1), is one of this series and is the fourth report on Idaho; it includes about half the data gathered in Idaho in 1949. The field and laboratory procedures adopted in these investigations are described rather fully in a previous report (McKelvey and others, 1953a).

Idaho↗
USGS1953

Stratigraphic sections of the Phosphoria Formation in Idaho, 1949: part I

The U.S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Idaho and other western states. These data will not be fully synthesized for many years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as they are assembled. This report, which contains abstracts of the sections measured in southeastern Idaho (fig. 1), is one of this series and is the fourth report of data gathered in Idaho; it includes about half of the data gathered in Idaho in 1949. The field and laboratory procedures adopted in these investigations are described rather fully in a previous report (McKelvey and others, 1953a). Many people have taken part in this investigation, which was organized and supervised by V. E. McKelvey. F. J. Anderson, D. F. Davidson, R. S. Jones, R. A. Smart, R. G. Waring, and J. D. Weiser participated in the description of strata and the collection of samples referred to in this report. T. K. Rigby assisted in the preparation of trenches and the collection, crushing, and splitting of samples in the field. The laboratory preparation of samples for chemical analysis was done in Denver, Colo., under the direction of W. P. Huleatt.

Idaho↗