Microscale chemical analysis and imaging of rocks and materials (Electron Microprobe Analysis, EMPA); X-Ray Diffraction of rocks and materials (XRD). Metamorphic/igneous petrology: Pressure-temperature (P-T) determinations to constrain equilibration/crystallization conditions throughout the middle to lower crust (medium- to high-grade metamorphism), primarily of the southern Appalachians. Structural geology and tectonics of metamorphic rocks.