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Ellen McGowan

Research student

Ellen McGowan

LEC Building

Lancaster University

Bailrigg

Lancaster LA1 4YQ

United Kingdom

Location:

Current Research

Ellen is a NERC funded PhD student

Ellen is studying dissected rhyolitic dykes at three central volcanoes in Iceland. Her research aims to gain insight into how volatiles escape from rhyolitic magma (degassing) during its ascent, this process is important because the explosivity of rhyolitic eruptions has been shown to decrease as more volatiles escape from the magma. Ellen is investigating how tuffisite veins (ash-filled fractures) and permeable foams control degassing and how these degassing pathways evolve during the ascent and emplacement of magma along conduits. She is studying textures in the dykes during extensive field seasons and through microscopic examinations, the textures are being linked to geochemical signatures, in particular degassing trends recorded by the magmatic water concentration in obsidian.

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