Browsing by Author/Contributor "Whittington, Alan G."
Now showing items 1-15 of 15
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Effect of plagioclase crystallization on liquid and magma viscosity in the Anorthite-diopside-dorsterite-quartz system
Getson, Jacqueline (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 ... -
The effects of volatiles on the viscosity and heat capacity of calc-alkaline basaltic and basaltic andesite liquids
Robert, Geneviève (University of Missouri--Columbia, 2014)Calc-alkaline basaltic magmas are volumetrically important at continental and island volcanic arcs, yet their thermal and physical properties are poorly described. These basaltic magmas are characteristically hydrous, and ... -
Flow and heat transfer properties of Mono Craters rhyolites : effects of temperature, water content, and crystallinity
Romine, William (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. ... -
Igneous intrusions and thermal evolution in the Raton Basin, CO-NM: contact metamorphism and coal-bed methane generation
Cooper, Jennifer Rebecca (University of Missouri--Columbia, 2006)Tertiary mafic dikes and sills intrude coal-bearing formations of the Raton Basin. This study investigates the role of intrusions in generating methane from coal. Coal samples at four different outcrops were analyzed by ... -
The May 2010 eruption of Pacaya Volcano, Guatemala : an experimental study of subliquidus magma rheology
Bollasina, Anthony (University of Missouri--Columbia, 2014)Pacaya volcano, Guatemala, erupted in May 2010 with two lava flows from lateral vents preceding a violent Strombolian eruption from the central vent. Compositions and textures of lava flow and tephra samples suggest a ... -
On the ability of rocks to conduct heat in the Lithosphere
Merriman, Jesse Dean (University of Missouri--Columbia, 2019)This work focuses on creating a model for the conductive thermal transport properties of rocks using measured thermal diffusivity (D) with the Laser Flash Analysis (LFA) method, which eliminates common errors associated ... -
Rheological and morphological evolution of basaltic lava flows
Soldati, Arianna (University of Missouri--Columbia, 2018)Over 500 million people live in proximity of an active volcano globally. Although lava flows rarely endanger human life, they often destroy critical infrastructure. Advancing our understanding of lava flow dynamics is ... -
Rheological evolution of planetary basalts during cooling and crystallization
Sehlke, Alexander (University of Missouri--Columbia, 2015) -
Rheology of crystallizing basalts from Nyiragongo and Nyamuragira volcanoes, D.R.C.
Morrison, Aaron (University of Missouri--Columbia, 2016)Nyiragongo, a stratovolcano located within the Virunga Volcanic Province on the western branch of the East African Rift, is known for its persistent lava lake activity as well as devastating eruptions in 1977 and 2002. The ... -
Rheology of dacitic volcanoes : from magma chamber to eruptive style
Avard, Geoffroy, 1977- (University of Missouri--Columbia, 2010)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Arc and especially dacitic volcanoes present a large variety of eruptive styles, from effusive to explosive, that depends on the ability of the magma ... -
Spatial, temporal, and petrogenetic relationships of basaltic and lamprophyric dikes and sills of the Raton Basin, southern Colorado and northern New Mexico
Lee, Paula M. (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 ... -
Synthesis and characterization of amorphous astrominerals
Zullig, Bryson; Whittington, Alan G.; Speck, Angela K. (University of Missouri--Columbia. Office of Undergraduate Research, 2008)Asymptotic Giant Branch (AGB) stars are the main contributors of solid material (dust) to the interstellar medium. The dust forms as gas escaping from the star cools and condenses to form a circumstellar dust shell. Around ... -
Temperature-dependent thermal transport properties of major Archean rock types and implications for the thermal evolution of Archean terranes
Merriman, Jesse (University of Missouri--Columbia, 2011)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] While it is generally agreed that plate tectonics operated on Earth in the Proterozoic, a form of vertical tectonics may have operated during the ... -
The viscosity of dacitic liquids measured at conditions relevant to explosive arc volcanism: determing the influence of temperature, silicate composition, and dissolved volatile content
Hellwig, Bridget M. (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 ... -
Viscosity of mid-ocean ridge basalts [abstract]
Galenas, Miriam; Whittington, Alan G. (University of Missouri--Columbia. Office of Undergraduate Research, 2007)Over seventy percent of the Earth's surface is covered by basalts erupted from mid-ocean ridges. The rate, style, and morphology of these underwater volcanic eruptions is controlled by the magma viscosity, yet almost no ...