3 year fully-funded PhD in Experimental Geochemistry with applications in Volcanology and Economic Geology
Application deadline: 15/03/2023
Keywords: Magmatic degassing, high-temperature fluids, ore-forming processes in-situ experiments, X-ray spectroscopy, Raman spectroscopy
We invite applications for a PhD candidate to work on the chemical controls on S, Cu, Zn and Se degassing from arc magmas.
The transition to carbon-free energy sources relies on a secure and sustainable access to an increasing number of metals. This growing demand for metals requires a fundamental understanding of the processes that enable their concentration in the Earth's crust.
In this framework, the aim of this PhD is to gain a detailed understanding of how magma composition and the P-T conditions of degassing may favour high solubility of CU, Zn and Se in magmatic fluids. To do so, the PhD candidate will use a novel in-situ experimental approach that enables the identification and quantification of different metallic species in co-existing hydrous melts and magmatic fluids directly under high P-T conditions. By completion of the PhD, the candidate will have gained a unique expertise in the structural and chemical characterization of high-temperature fluids and silicate melts. He/she will be widely encouraged to present his/her results at national and international conferences.
The project will be supervised by Marion Louvel and Giada Iacono-Marziano, both CNRS researchers at the Institut des Sciences de la Terre d'Orleans (ISTO). ISTO is laboratory that hosts Earth scientists from the CNRS and the University of Orleans. It is located close by and share numerous collaborations with the BRGM (French Geological Survey). ISTO is home to a unique experimental platform dedicated to the study of upper crustal magmatic and volcanic processes that includes several IHPV, cold-seal pressure vessels, batch reactors and in-situ apparatus (transparent IHPVs and diamond-anvil cells). Most of the experiments will be conducted in the Experimental Petrology Laboratory at ISTO but the project will also require bi-annual visits to synchrotron facilities, mostly the European Synchrotron ESRF in Grenoble, France.
The PhD candidate should hold or have completed a Master in Geosciences by August 2023. A good knowledge of magmatic processes, ore-forming processes and geochemistry is required. A previous experience in experimental technics and/or Raman and X-ray spectroscopies would be a plus.
The selection process will last few months and involves the following steps:
All candidates are encouraged to contact PI Marion Louvel directly (firstname.lastname@example.org).
CV including 2 references and motivation letter. If possible Master grades and ranking.