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Variation and fractionation of lithium isotopes within single tourmaline crystals in the pegmatites of the Black Hills, SD
(University of Missouri--Columbia, 2014)
Extremely large elongated crystals, attributed to low nucleation rates and rapid growth during fast cooling (Nabelek et al., 2010), are just one example of the intriguing and unusual disequilibrium features found in granitic ...
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 ...
Late cretaceous ocean circulation in the south Atlantic and Pacific oceans
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Cooling during the last 15 million years of the Cretaceous is widely believed to have resulted in a reorganization of ocean circulation, with cooler ...
Temporal trends in the Holocene: exploring implications for conservation paleobiology through quantitative assessment of marine mollusks
(University of Missouri--Columbia, 2018)
Conservation paleobiology is a relatively new field which applies the theories and analytical tools of paleontology to problems concerning the conservation of biodiversity. The use of data from stratigraphy, sediment or ...
Taphonomic characteristics of fossils on the burgessshale-type spectrum
(University of Missouri--Columbia, 2018)
"Study of exceptional fossil preservation tends to yield exciting results. Since soft-bodied organisms and the soft tissues of biomineralizing organisms are usually not preserved in the fossil record, instances of soft-tissue ...
Pluton source varition over two magmatic pulses in the white-inyo range, central-eastern California : implications for paleozoic and mesozoic tectonic reconstructions
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This dissertation uses compositions of plutons in the White-Inyo Range (WIR) of central-eastern California, which is an important tectonic boundary as ...
Atrazine transport through a glacial till aquifer in north-central Missouri
(University of Missouri--Columbia, 2009)
Although the claypan of North Central Missouri is traditionally believed to protect the groundwater from contamination, low concentrations of the herbicide atrazine have been detected in a shallow glacial till aquifer. The ...
Spatial, temporal, and petrogenetic relationships of basaltic and lamprophyric dikes and sills of the Raton Basin, southern Colorado and northern New Mexico
(University of Missouri--Columbia, 2005)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Alkali basalts and lamprophyres commonly occur as sheet intrusions along the flanks of continental rifts. The Raton Basin, on the eastern shoulder of ...
Organic matter remineralization in the sediment of two acid mine drainage lakes
(University of Missouri--Columbia, 2013)
Acid mine drainage is a significant environmental problem throughout the world. At Rocky Forks Conservation Area near Columbia, MO numerous lakes have formed from old coal mining pits. Most of these lakes have a pH near ...
Seismic tomography and anisotropy : studies of intraplate seismic zones
(University of Missouri--Columbia, 2009)
Both body and surface wave tomography has been applied to some significant intraplate seismic zones to explore the cause of intraplate earthquakes. Pn tomography in the Central and Eastern United States reveals that the ...
Investigations of Mississippi valley-type mineralizing fluids via analytical geochemistry, numerical modeling, and experimental geochemistry
(University of Missouri--Columbia, 2021)
necessary to form the
spatial distributions of fluorite mineralization and limestone host rock dissolution observed in the field, and to form the fluorite mineralization within a geologically reasonable time period. The final experimental geochemistry study...
Groundwater vulnerability to agrochemicals: a GIS-based DRASTIC model analysis of Carroll, Chariton, and Saline counties, Missouri USA
(University of Missouri--Columbia, 2006)
This investigation presents an analysis of groundwater vulnerability in three mid-Missouri counties that represent an agricultural production region that is physiographically and hydrogeologically complex. The goals of ...
"The great fairy science" : the marriage of natural history and fantasy in Victorian children's literature
(University of Missouri--Columbia, 2009)
, technological, and scientific change. From the natural theology of Margaret Gatty to the providence-guided evolution of Charles Kingsley to the spirituality of Arabella Buckley, I contend that these writers coupled fantasy with science and natural history...
Changes at treeline within the San Juan Mountains of Colorado
(University of Missouri--Columbia, 2020)
Repeat photography is a field method to study landscape change over time, yet most studies use a single pair of photographs spanning upwards of a century or more to ascertain change. In this study, I used repeat photography ...
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 ...
Laramide stress conditions and deformation mechanisms during the formation of Derby and Dallas Domes, Weiser Pass Quadrangle, Wind River Mountains, Wyoming
(University of Missouri--Columbia, 2007)
echelon alignment, includes Dallas Dome, Derby Dome, and Sheep Mountain anticline - referred to here as the DDS fold line. Geologic mapping and structural analysis of the DDS support a regional NE-SW shortening direction of 6̃0/240⁰. However, progressive...
Assessment of teachers' ability to integrate science concepts into secondary agriculture programs
(University of Missouri--Columbia, 2007)
For the past two decades, the idea of integrating more science concepts into the agricultural education curriculum has been gaining support. The purposes of this study were two fold: 1) To assess the knowledge base and interest levels among...
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 ...
The viscosity of dacitic liquids measured at conditions relevant to explosive arc volcanism: determing the influence of temperature, silicate composition, and dissolved volatile content
(University of Missouri--Columbia, 2006)
Viscosity can control various magmatic processes and varies by orders of magnitude as a function of temperature, composition and dissolved volatiles. There is no predictive model for the viscosity of dacitic liquids, which ...
Macroinvertebrate and crayfish communities in the Meramec River drainage basin: an investigation at multiple spatial scales
(University of Missouri--Columbia, 2006)
Hierarchical classification systems have been widely used to delineate terrestrial ecounits at multiple spatial scales; however there has long been a need for an aquatic based classification system. A newly developed aquatic ...