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Penny E Wieser

Penny E Wieser

Research Student

Petrology

Volcanology

Geochemistry

Aerosol chemistry

M03
Office Phone: +44 (0) 1223 333482

Biography:

2013-2017 - Undergraduate Masters in Earth Sciences, Worcester College, University of Oxford (Top in year). Specialized in Igneous Petrology and Geochemistry. Masters Project investigating the origin of enriched primitive magma compositions in the Northern Southern Volcanic Zone. https://eartharxiv.org/jx5wa/

2016- Research Internship, University of Cambridge (6wks) investigating optimum run conditions for LAICPMS analysis of olivine

2017 -Research Assistant, University of Oxford (4wks) Preparing olivine, pyroxene and glass for noble gas analysis.

2017-present PhD student investigating the plumbing system of Kilauea Volcano, Hawaii using erupted crystal cargoes. 

Research Interests

I have broad research interests regarding the geochemistry and petrology of igneous rocks. My PhD principally focuses on extracting the information held in erupted crystal cargoes about the inner workings of Kilauea's plumbing system. I have developed novel workflows utilizing Electron backscatter diffraction (EBSD) alongside chemical data to quantitatively assess grain aggregation, and the mechanisms by which volcanic olivines can become deformed. I have also performed extensive LAICPMS trace element melt inclusion work on eruption products from the Mauna Ulu eruption. This work, alongside EBSD data, demonstrates that crystal scavenging from volcanic mush piles results in antecrystic olivines (and their spurious melt inclusion records) being hosted in unrelated carrier melts.

I also research the behaviour of chalcophile elements during mantle melting, crystal fractionation, and magmatic degassing in Hawaiian lavas using in-situ LA-ICP-MS measurements within melt inclusions and co-erupted matrix glasses. I have participated in two aerosol sampling campaigns in Hawaii (2018, 2019) investigating the volatility, transport, and environmental availability of chalcophile metals within volcanic plumes. 

Topics

  • Magma mixing and ascent
  • Volcanology
  • Igneous petrology

Key Publications

Wieser, P.E., Turner, S.J., Mather, T.A., Pyle, D.M., Savov, I.P. and Orozco, G., 2019. New constraints from Central Chile on the origins of enriched continental compositions in thick-crusted arc magmas. Geochimica et Cosmochimica Actahttps://doi.org/10.1016/j.gca.2019.09.008

Wieser, P.E., Vukmanovic, Z., Kilian, R., Ringe, E., Holness, M.B., Maclennan, J. and Edmonds, M., 2019. To sink, swim, twin, or nucleate: A critical appraisal of crystal aggregation processes. Geologyhttps://doi.org/10.1130/G46660.1

Wieser, P., Edmonds, M., Maclennan, J. and Wheeler, J., 2019. Distorted Olivine Crystals: An unexploited record of magma storage at Kīlauea Volcano, Hawaiʻi. https://eartharxiv.org/ks78e/

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