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Browsing by Subject "Geochemistry"
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Now showing items 1-11 of 11
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(University of Oregon, 2017-05-01)Environmental history recorded in sediments can reconstruct estuarine water quality metrics, such as dissolved oxygen, through the use of geochemical and biological proxies. I collected sediment cores from two locations ...
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(University of Oregon, 2015-08-18)Volatiles (H2O, CO2, S, Cl) play a key role in magmatic processes at subduction zones. In this study, the dissolved volatile contents of olivine-hosted melt inclusions from cinder cones in the Lassen segment of the Cascade ...
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(Nature Communications, 2023-01)Organic matter degradation and preservation are crucial components of Earth’s carbon cycle. Empirical and phenomenological models usually contain parameters determined by site-specific data and focus on different aspects ...
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(University of Oregon, 2011-12)Large-volume calderas are responsible for producing large deposits of rhyolite and high-silica rhyolite, but the mechanisms by which these deposits are produced are still poorly understood. The Kamchatka Peninsula of Russia ...
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(University of Oregon, 2011-06)Caldera-forming eruptions are dramatic and destructive natural phenomena, causing severe and sustained consequences to society. This dissertation presents new geochemical and geochronologic data for caldera-forming tuffs ...
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(University of Oregon, 2011-03)Volatile components (H 2 O, CO 2 , S, Cl) dissolved in magmas influence all aspects of volcanic activity from magma formation to eruption explosivity. Understanding the behavior of volatiles is critical for both mitigating ...
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(University of Oregon, 2009-06)This dissertation explores several important consequences of H 2 O-rich fluids in magmatic and ore-forming systems within continental arc crust. North Sister, a stratovolcano in the Oregon High Cascades, provides a ...
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(University of Oregon, 2014-06-17)H2O and CO2 concentrations in olivine-hosted melt inclusions, assuming vapor saturation at the time of trapping, can be used to estimate crystallization depths for the olivine host. Estimating the true CO2 in melt inclusions ...
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(University of Oregon, 2017-09-06)The mechanisms and timescales associated with the triggering of caldera-forming eruptions remain ambiguous and poorly constrained. Do such eruptions start vigorously, then escalate, or can there be episodicity? Are they ...
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(University of Oregon, 2008-06)Volatiles, particularly H 2 O, play an important role in subduction zone magmatism, from instigating melting of the mantle wedge to influencing the explosivity of eruptions at the surface. To better understand both small-scale ...
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(University of Oregon, 2023)With the climate crisis threatening the potability of surface waters, studying groundwater issues is more important than ever. One important aspect of groundwater environments which impact water chemistry are microbes that ...
Now showing items 1-11 of 11