Index Catalog // Scholar@UC

Type:: Etd
Description/Abstract:: I conducted melting experiments with a basanite, two hawaiites (DVDP2 and 83415), and a phonolite from Mt. Erebus, Antarctic. All experiments were carried out a 1 atmosphere from 1224$\sp\circ$ to 1049$\sp\circ$C at oxygen fugacity near QFM buffer. I have tested two hypothesis: (1) can a basanite parent magma differentiate at low pressures to produce hawaiite and phonolite magmas, and (2) do the Mt. Erebus rocks represent low pressure differentiation of a parental basanitic magma. Microprobe analyses of glasses and coexisting crystals were used to test these hypotheses.
Creator/Author:: Gerke, Tammie Lee.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1995
License:: All rights reserved

Type:: Etd
Description/Abstract:: Alkylammonium ion exchange, x-ray powder diffraction (XRD), x-ray fluorescence spectroscopy (XRF), and high resolution transmission electron microscopy (HRTEM) have been used to study the chemistry and the physical properties of illite/smectite (I/S) clays from Paleozoic K-bentonites. The data have been used to evaluate current models of I/S interstratification and the mechanism of formation of illite during bentonite diagenesis.
Creator/Author:: Cetin, Kenan.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1992
License:: All rights reserved

Type:: Etd
Description/Abstract:: In this dissertation I present a tectonic, geochemical, and thermal history for the Witwatersrand basin, located on the Archean Kaapvaal craton, South Africa. The foreland basin tectonic setting of the Central Rand Group controls both the chemical and the thermal evolution of the basin, and unifies the basin evolution model presented here.
Creator/Author:: Ritger, Scott D.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1991
License:: All rights reserved

Type:: Etd
Description/Abstract:: Various geochemical parameters including type and abundance of organic matter (TOC), sulfide-sulfur quantities, fluctuations in bottom-water anoxicity (DOP), metal content differences, and sulfur isotope variations have been assessed in order to characterize Midcontinent Pennsylvanian black shales. Based on these geochemical parameters, the deposits can be grouped into three types: Mecca-type, Heebner-type, and Shanghai-type.
Creator/Author:: Schultz, Richard Brian.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1991
License:: All rights reserved

Type:: Etd
Description/Abstract:: This dissertation is a contribution toward low pressure geochemistry and petrology of alkaline rocks. In order to analyze the phase equilibria in multiply saturated potassic alkaline systems, experiments were performed at one atmosphere pressure and under the $\rm f\sb{O2}\sim QFM$ buffer. Range of temperature covered in this study is 1060-1250$\sp\circ$C. In addition, temperature and composition dependency of low pressure mineral-melt equilibria involving olivine, pyroxenes, plagioclase, nepheline, and leucite were modeled using empirical equations.
Creator/Author:: Camur, Mehmet Zeki.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1989

Type:: Etd
Description/Abstract:: Enriched concentrations of vanadium and nickel have been noted in a variety of naturally occurring organic substances including crude oils, asphalts, and organic matter in some sedimentary rocks. The objectives of this study are to understand the preference, source and proportionality of these.
Creator/Author:: Lewan, Michael Donald.
Submitter:: UC Libraries
Date Uploaded:: 03/26/2018
Date Modified:: 03/26/2018
Date Created:: 1980

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