Browsing Theses (MU) by Thesis Department "Geological sciences (MU)"
Now showing items 21-40 of 96
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Dominant substrates used by methanogens in hypersaline environments
(University of Missouri--Columbia, 2010)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The central goal of this study was to determine the dominant substrates used by methanogens in the salt ponds of Elkhorn Slough, the Don Edwards ... -
Earthquake interaction along the Sultandagi-Aksehir fault based on InSar and coulomb stress modeling
(University of Missouri--Columbia, 2008)The evolution of geologic structures along active faults is influenced by crustal deformation associated with several repetitions of the earthquake cycle, in addition to surficial processes accompanying geologic time. This ... -
Earthquakes in central eastern United States (CEUS) : spatiotemporal patterns and correlations with tectonic factors
(University of Missouri--Columbia, 2020)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Earthquakes have a history of predominantly occurring along plate boundaries; however, there have been notable exceptions -- the occurrence of earthquakes ... -
Effect of increasing trimethylamine and organic matter concentration on stable carbon isotopes of methane produced in hypersaline, substrate limited environments
(University of Missouri--Columbia, 2013)Substrate limitation has been proposed as an explanation for 13C enriched methane production from endoevaporite microbial communities in hypersaline environments. To test this possibility, methane production rates and ... -
Effect of plagioclase crystallization on liquid and magma viscosity in the Anorthite-diopside-dorsterite-quartz system
(University of Missouri--Columbia, 2006)SiO2 (CMAS) glasses were synthesized as analogs for dacitic and basaltic lavas. Liquid viscosities were measured between 101 and 1013 Pa s, over the temperature range of approximately 1600 to 700⁰C, using concentric cylinder ... -
Entrainment and transport of coarse stream bed material in a fluviokarst watershed, south-central Missouri : a tracer particle study
(University of Missouri--Columbia, 2010)The midcontinent of the U.S. is karstified and contains well developed subsurface drainage systems covered by beds of coarse-grained, poorly sorted sediments, resembling those in upland surface streams. Within Tumbling ... -
Evaluation of solitary waves as a mechanism for oil transport in elastic porous media : a case study of the south Eugene Island field, Gulf of Mexico basin
(University of Missouri--Columbia, 2012)Hydrocarbons in shallow (< 1 km depth) Pleistocene sand reservoirs of the Eugene Island 330 field in the northern Gulf of Mexico basin are thought to have originated from Early Tertiary source sediments at depths of about ... -
Evaluation of the geologic CO[subscript 2]sequestration potential of the Morrow B sandstone in the Farnsworth, Texas hydrocarbon field using reactive transport modeling
(University of Missouri--Columbia, 2017)The objectives of this research were to examine the long term fate of CO[subscript 2] injected into the Morrow B Sandstone, a hydrocarbon reservoir in the Farnsworth Unit in northern Texas. A suite of numerical multiphase ... -
Examining dissolution procedure effects on trace and rare earth element concentrations and U/Pb ages in conodonts
(University of Missouri--Columbia, 2022)The ability to quantitatively date carbonate rocks and shales using geo- and thermochronometry has eluded geologists due to the scarcity of requisite minerals. A small number of investigations have shown that the highly ... -
Fault segmentation and paleoseismicity along the North Wutaishan Fault of the Shanxi Graben System, China
(University of Missouri--Columbia, 2013)The Shanxi Graben System has been the location of large, devastating intraplate earthquakes in the past, making it an ideal location for the study of the temporal recurrence of intracontinental earthquakes. This study ... -
Flow and heat transfer properties of Mono Craters rhyolites : effects of temperature, water content, and crystallinity
(University of Missouri--Columbia, 2008)The nature of volcanic processes, including rate of magma ascent, exsolution of volatiles, eruption style, and flow distance, is highly dependent on the viscosity of the associated magma and its ability to transfer heat. ... -
Fluid inclusion and oxygen isotope studies of high-grade quartz-scheelite veins at the Cantung Mine, Northwest Territories, Canada: products of a late-stage magmatic-hydrothermal event
(University of Missouri--Columbia, 2006)High-grade quartz-scheelite veins in the Open Pit orebody, Cantung occur 300 m above a limestone-monzogranite contact where the E-Zone orebody, a world-class tungsten skarn, is developed. Adjacent to these veins, alteration ... -
Fluid inclusion evidence for the nature of fluids associated with recrystallization of quartzites in the EJB contact Aureole, California
(University of Missouri--Columbia, 2009)The purpose of this study was to look at the control of fluids and fluid composition on recrystallization of quartzites in the Eureka Valley - Joshua Flat - Beer Creek pluton contact aureole (EJB), in the White - Inyo ... -
Fluid inclusion evidence for the temperature and composition of ore fluids in the Lemhi Pass and diamond Creek Ree-Th districts, Idaho-Montana
(University of Missouri--Columbia, 2019)The Lemhi Pass district is the largest thorium (Th) and 5th largest rare earth element (REE) occurrence in the U.S., straddling the continental divide along the central Idaho-Montana border. The Diamond Creek district, ... -
Fluorine concentrations of ore fluids in the Illinois-Kentucky district : evidence from SEM-EDS analysis of fluid inclusion decrepitates
(University of Missouri--Columbia, 2016)The Illinois-Kentucky district is an atypical occurrence of Mississippi Valley-type (MVT) mineralization that consists predominantly of fluorite rather than metal sulfide minerals. A long-standing assumption for the ... -
Geochemical studies of gold mineralizing events in the Discovery-Ormsby and Clan Lake areas of the Yellowknife Greenstone Belt, Northwest Territories, Canada
(University of Missouri--Columbia, 2013)Metavolcanic rocks of the mafic Discovery-Ormsby area and the intermediate to felsic Clan Lake area are sites of active gold exploration in the north end of the Yellowknife Greenstone Belt (YGB), Northwest Territories, ... -
A geochemical, taxonomic, and phylogenetic investigation of Paleozoic arthropods : case studies on the Cambrian spice event and the Silurian Waukesha Lagerstatte
(University of Missouri--Columbia, 2020)This thesis details two stand-alone projects: Chapters 1 and 2 comprise a quantitative investigation of controls on the [delta]13C record of the Steptoean Positive Carbon Isotope Excursion (SPICE); Chapter 3 describes a ... -
Geochemistry and fluid evolution of a carboniferous-hosted sphalerite breccia deposit, Isle of Man
(University of Missouri--Columbia, 2008)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Base-metal sulfide deposits have been mined historically on the Isle of Man, principally from large quartz-vein deposits hosted in Ordovician-Silurian ... -
Geochemistry and reaction path modeling of the Beowawe hydrothermal system, Nevada : a barren end-member epithermal system
(University of Missouri--Columbia, 2010)The Beowawe geothermal area is manifested by numerous hot springs, fumaroles, and before the installation of an electric power plant, spectacular geysers. Beowawe also bears many geologic similarities to ancient epithermal ... -
Geochemistry, petrogenesis and tectonic setting of igneous rocks of the Hartville uplift, Eastern Wyoming
(University of Missouri--Columbia, 2016)The location of the eastern margin of the Wyoming Archaean Province and its Proterozoic evolution are still debated. Previous studies have attributed north-south and east-west directed structures to the Proterozoic Black ...