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Solid-earth geochemistry is grounded in observations of rock samples, but experimental studies create the scientific framework for interpreting the chemistry of natural specimens. Our group, led by PI Megan Holycross, uses controlled laboratory experiments to develop new geochemical tools to quantify the rates (time) and conditions (temperature, pressure, redox state) of magmatic and metamorphic processes. Areas of interest include “crystal clock” diffusion chronometry, trace element partitioning in subduction zone settings, and multi-valent element x-ray absorption near edge structure (XANES) spectroscopy.

We are always looking for motivated students and postdocs to join our group. We’re recruiting at least one new PhD student for a Fall 2022 start to work on an NSF-funded project to develop new tools that will tell us about the timescales of volcanic processes directly preceding eruptions. Contact PI Megan Holycross to learn more.