School of Physical Sciences
Faculty of Sciences
Eligible to supervise Masters and PhD (as Co-Supervisor) - email supervisor to discuss availability.
- My Research
- Grants and Funding
- Professional Activities
Monogenetic and arc volcanism - How do volcanic deposits reflect magma genesis and ascent?
Basalt geochemistry - what does it tell us about the mantle source and how melts are released?
Mantle heterogeneity - how heterogeneous is the mantle really and on what temporal and spatial scale?
Uranium series chemistry (U-Th-Ra-Pb isotopes) to address timescale questions in igneous systems
Ore deposit genesis (new!) - what are the essential ingredients to form ore deposits and where can we find the next big one?
Much of my research since my MSci in the UK has centred around using the compositions of basalts erupted in small eruptive volcanic centres to understand the composition of the mantle, the way in which it melts and how these are reflected in small-scale volcanic deposits. My PhD work at the University of Auckland (supervised by Ian Smith and Jan Lindsay) focussed on the melting processes which have given rise to a city of miniature, Quaternary-age volcanoes: the Auckland Volcanic Field. During this time I studied the field using several key examples, and worked on its possible end-member basalt compositions with the use of radiogenic and U-series isotopes and major and trace element modelling. ‘Monogenetic’ certainly doesn’t mean ‘monotonous’!
In my 3-year postdoc at the University of Chile (in addition to trialling U-Th dating on geothermal carbonates, as part of my project with the Andean Geothermal Centre of Excellence) I continued the theme of small volume basalts after being awarded a 3-year grant from the government. This time the volcanoes were in a far more complex arc context and in close proximity to large, active stratovolcanoes (the Pucon small eruptive centres close to Villarrica volcano, the Carran-Los Venados field close to Puyehue-Cordon Caulle volcano and the Antillanca volcanic complex, all in the Southern Volcanic Zone of Chile). I worked with Macquarie University in the U-series area of this project which provided important information on competing tectonic and source component-related signatures. I still continue to work with researchers from the Universidad de Chile and SERNAGEOMIN (the geological survey of Chile) on several volcanology-related projects in different areas of Southern Chile.
During my 2.5 year postdoc at Macquarie University I worked on what triggers explosive eruptions, applying the short lived isotopes of 210Pb and 226Ra (in the Uranium series decay chain) to recently erupted rocks from Soufriere Hills volcano in the Caribbean to examine the idea that volatile exchange is a major driver of explosive volcanism.
As part of the MinEx CRC I will be working on developing metal isotopes to look for mineral prospectivity in South Australia.
Date Position Institution name 2016 - 2018 Postdoctoral research associate Macquarie University 2013 - 2016 Postdoctoral research associate University of Chile
Language Competency Spanish - Latin American Can read, write, speak and understand spoken
Date Institution name Country Title 2008 - 2012 University of Auckland New Zealand PhD 2004 - 2008 Durham University United Kingdom MSci Geoscience (Hons)
Date Title Institution name Country 2018 Standard Mental Health First Aider Mental Health First Aid Australia —
Year Citation 2019 McGee, L. E., Reagan, M., Handley, H., Simon, T., Sparks, R. S., Berlo, K., . . . Turner, M. (2019). Volatile behaviour in the 1995-2010 eruption of the Soufrière Hills Volcano, Montserrat recorded by U-series disequilibria in mafic enclaves and andesite host. Earth and Planetary Science Letters, 524.
2018 Brahm, R., Parada, M., Morgado, E., Contreras, C., & McGee, L. (2018). Origin of Holocene trachyte lavas of the Quetrupillán volcanic complex, Chile: Examples of residual melts in a rejuvenated crystalline mush reservoir. Journal of Volcanology and Geothermal Research, 357, 163-176.
2018 Handley, H., Reagan, M., Gertisser, R., Preece, K., Berlo, K., McGee, L., . . . Herd, R. (2018). Timescales of magma ascent and degassing and the role of crustal assimilation at Merapi volcano (2006–2010), Indonesia: constraints from uranium-series and radiogenic isotopic compositions. Geochimica et Cosmochimica Acta, 222, 34-52.
2017 Hopkins, J., Wilson, C., Millet, M., Leonard, G., Timm, C., McGee, L., . . . Smith, E. (2017). Multi-criteria correlation of tephra deposits to source centres applied in the Auckland Volcanic Field, New Zealand. Bulletin of Volcanology, 79(7), 35 pages.
2017 McGee, L., Brahm, R., Rowe, M., Handley, H., Morgado, E., Lara, L., . . . Valdivia, P. (2017). A geochemical approach to distinguishing competing tectono-magmatic processes preserved in small eruptive centres. Contributions to Mineralogy and Petrology, 172(6), 44-1-44-26.
2016 McGee, L., & Smith, I. (2016). Interpreting chemical compositions of small scale basaltic systems: A review. Journal of Volcanology and Geothermal Research, 325, 45-60.
2015 McGee, L., Millet, M., Beier, C., Smith, I., & Lindsay, J. (2015). Mantle heterogeneity controls on small-volume basaltic volcanism: Reply. Geology, 43(11), e371.
2015 McGee, L., McLeod, C., & Davidson, J. (2015). A spectrum of disequilibrium melting preserved in lava-hosted, partially melted crustal xenoliths from the Wudalianchi volcanic field, NE China. Chemical Geology, 417, 184-199.
2015 Morgado, E., Parada, M., Contreras, C., Castruccio, A., Gutiérrez, F., & McGee, L. (2015). Contrasting records from mantle to surface of Holocene lavas of two nearby arc volcanic complexes: Caburgua-Huelemolle Small Eruptive Centers and Villarrica Volcano, Southern Chile. Journal of Volcanology and Geothermal Research, 306, 1-16.
2015 McGee, L., Millet, M., Beier, C., Smith, I., & Lindsay, J. (2015). Mantle heterogeneity controls on small-volume basaltic volcanism. Geology, 43(6), 551-554.
2013 Le Corvec, N., Bebbington, M., Lindsay, J., & McGee, L. (2013). Age, distance, and geochemical evolution within a monogenetic volcanic field: Analyzing patterns in the Auckland Volcanic Field eruption sequence. Geochemistry, Geophysics, Geosystems, 14(9), 3648-3665.
2013 McGee, L., Smith, I., Millet, M., Handley, H., & Lindsay, J. (2013). Asthenospheric control of melting processes in a monogenetic basaltic system: A case study of the Auckland volcanic field, New Zealand. Journal of Petrology, 54(10), 2125-2153.
2012 McGee, L., Millet, M., Smith, I., Németh, K., & Lindsay, J. (2012). The inception and progression of melting in a monogenetic eruption: Motukorea Volcano, the Auckland Volcanic Field, New Zealand. Lithos, 155, 360-374.
2011 McGee, L., Beier, C., Smith, I., & Turner, S. (2011). Dynamics of melting beneath a small-scale basaltic system: A U-Th-Ra study from Rangitoto volcano, Auckland volcanic field, New Zealand. Contributions to Mineralogy and Petrology, 162(3), 547-563.
Current grant: August 2019 - November 2020: ANZIC (Australian and New Zealand International Ocean Discovery Program Consortium) Legacy grant for the project: "Calibrating metal isotope proxies in modern hydrothermal environments for ancient ore deposit applications". Awarded $19,500 AUD to investigate the metal transport system in modern, active hydrothermal systems using a combination of redox sensitive metal isotopes and radiogenic magmatic-environmental sensitive isotopes. Studying in detail the behaviour of metal species in modern-day oceanic settings allows us to relate chemical behaviour directly to processes, something which is much harder to establish in ancient terrestrial settings, and which is critical for the new age of mineral exploration. Partner investigators: Dr Juraj Farkas (University of Adelaide) and Dr Chris Yeats (Geological Survey of New South Wales).
Previous grants: October 2013-October 2016: University of Chile. FONDECYT (Fondo Nacional de Desarrollo Científico y Tecnológico - national funds for the development of science and technology) Iniciación en Investigación (initiation of research), Project number 11130296. “Investigating the link between volcano size and melting dynamics along the Andean arc: a study of Chilean monogenetic volcanic fields”. In collaboration with researchers at Macquarie University, the University of Iowa and the University of Durham. Value approximately 100.000.000 CLP (c. 200,000 USD) over three years.
2019: Semester 2: Igneous and Metamorphic Geology II (3920_GEOLOGY_2502)
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