Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"experimental petrology"”.
-
Volatiles as a link between planetary interiors and the environment
… magmatism and climate. In this thesis, I use experimental petrology, numerical modeling, geochemical measurements, and field observations to investigate the petrologic sources, eruptive transfer, and climatic effects of volatiles released during emplacement of the Siberian large igneous …
-
Petrological and rheological controls on volcanism to terrestrial planets
Through experimental petrology and geodynamic modeling, processes of melting under thick lithospheres on the Earth and the moon are investigated. Phase equilibrium experiments were carried out on Apollo 14B and 15C picritic glasses (Chapters 5 and 6) and on a Sierran high-potassium lava (Chapter …
-
Experimental, geochemical and isotopic insights on melting and degassing behavior on Earth
… main lines of investigation rely on the tools of experimental petrology (Chapters 2 and 3) and stable isotope geochemistry (Chapters 1 and 4). Chapter 1 explores the systematics of methane (CH4) isotopologues in geothermal systems, with a particular focus on the kinetics of isotopic exchange …
-
An unexpected journey: experimental insights into magma and volatile transport beneath Erebus volcano, Antarctica
… such as physical volcanology, gas chemistry, petrology, melt inclusion research, seismic, and more. Despite this large data set, however, interpretations of Erebus rocks, particularly mafic and intermediate lavas, which are thought to originate from deep within the magmatic plumbing system, …
-
The effect of carbon dioxide on the density and compressibility of kimberlitic magma
Constraints were placed on the density of kimberlitic melts containing varying amounts of CO2 using high pressure sink/float experiments. The melt composition used was carefully selected and was prepared free of H2O and minor elements in order to focus on the effect of CO2. Experiments were run in …
-
Embayments in explosive, silicic eruptions : a textural, numerical, and experimental assessment.
… of embayments in quartz using textural, experimental, and numerical techniques. Embayments are pockets of melt partially trapped inside of volcanic crystals. During eruption these pockets of melt quench to glass. The concentration of water within embayment glass is the foundation for a …
-
Iron-Nickel-Sulfur-Carbon System Under High Pressure, With Implications To Earth’S Mantle
Fe-Ni-S-C phases are accessory phases in the Earth’s mantle, but carry important geochemical and geophysical implications. According to their chemical behavior, Fe-Ni-S-C phases preferentially store siderophile and chalcophile elements (and potentially noble gases). Physically, Fe-Ni-S-C phases …
-
Guiana Shield diamonds, the sub-cratonic lithosphere, and kimberlite emplacement in the upper crust.
The origin of diamonds from Guyana have remained an enigma despite being mined for nearly 150 years within the Guiana Shield. These gemstones are an undescribed diamond suite within an understudied portion of the Amazonian Craton. Our study confirms they are likely eroding as paleo-placers from …
-
Carbon systematics of the Icelandic crust and mantle
… key part of this work was the development of an experimental method for stabilising 5 kbar conditions in a piston cylinder apparatus. The experiments have shown that clinopyroxene- liquid barometry is more reliable than multi-reaction barometry. However, knowledge of equilibrium clinopyroxene …
-
Experimental simulation of Lunar Magma Ocean crystallization : insights into mantle composition and the source regions of lunar basaltic magmatism
… observations, but it has never been fully tested experimentally. Presented in this study is the first experimental simulation of lunar differentiation. Two end-member bulk Moon compositions are considered: one enriched in refractory lithophile elements relative to Earth and one with no such …
-
Microstructural evolution of silicate immiscible liquids in solidifying ferrobasalts
… insignificant contribution from coalescence. The experimental observations are scaled to infer that in magma bodies < ~10 m in size, gravitationally-driven segregation of immiscible Fe-rich droplets is unlikely to be significant. The same concepts are investigated using natural samples with …
-
Experimentally generated partition coefficients for the first-row transition elements during eclogite partial melting at three gigapascals
… trace element and isotopic signatures. This experimental study provides measurements of the partitioning of the first-row transition elements (FRTE) between eclogite and melt, which could be used to fingerprint the source lithology of ocean island basalts (OIB) and infer participation of …