My research is focused on using low temperature thermochronometers such as apatite fission track, and apatite and zircon (U-Th/He) to explore unroofing styles of metamorphic core complexes. Specifically I am attempting to determine if displacement during the evolution of unroofing changes from low angle detachment faulting to high angle normal faults. My two field areas are the Harcuvar Mountains in western Arizona and the Santa Catalina-Rincon Mountains in southeastern Arizona.