Dr. Fayek’s research interests include geofluids and ore systems, anthropogenic geochemistry, secondary ion mass spectrometry (SIMS), and archaeometry. He uses light and heavy stable isotopes to trace element cycling between the Earth’s crust, the hydrosphere, and biosphere and applies in situ analytical and synchrotron techniques to study tectonics, the timing of fluid-rock interactions in sedimentary environments, base- and precious-metal deposits, and the geochronology of uranium deposits and natural fission reactors.  He also uses isotope systems to trace micro-contaminants in environmental settings and for forensic purposes. Dr. Fayek also works to develop new techniques and applications of SIMS for forensics research, the geosciences, and archaeometry.   ​