PHD offer: Constraining volatile storage in the lower crust of arcs
Supervisors :
Dr. Véronique Le Roux (CRPG/WHOI) & Dr. Laurette Piani (CRPG)
Anticipated techniques :
Ion microprobe; electron microprobe; LA-ICP-MS; EA-IRMS ; geochemical/petrological modeling, possible FTIR/Raman.
Thesis description :
The thesis will aim to further develop H and D/H (δD) analytical capabilities at the CRPG laboratory (Nancy, FR) and study volatile cycling in crustal and mantle rocks, in particular in the lower crust of arcs (either in modern subduction zones of East Pacific or ancient obducted arcs). The lower crust represents a potentially important reservoir for volatiles, but few studies have attempted to constrain its role in the global geochemical cycle. Ideally, the project will be done in collaboration with a parallel, complementary project led by US collaborators at Williams College and Woods Hole Oceanographic Institution, and opportunities for international exchanges will be considered.
The goals of the 3-year PhD thesis will be to quantify volatile distribution at the base of arc sections, identify the sources of fluids and major processes controlling their distribution, and contribute to new global models of volatile budgets. Ultimately, the results will allow for a better understanding of the link between deep fluid contents of the lower crust, surficial volcanic hazards, economic resources, and global volatile cycling.
Scientific drive, curiosity, and good communication skills required. Good command of English required. Some knowledge or experience with geochemical analyses, petrography, geochemical modeling, and/or Earth interior literature is a plus. Under-represented students are strongly encouraged to apply. Previous or anticipated DEI efforts and engagement will be valued.
Application:
You can find the offer and apply on ADUM. Deadline for application: April, 26th 2024
For any questions about the PhD, feel free to contact Véronique Le Roux ou Laurette Piani