USING EBSD AND MICROSTRUCTURAL ANALYSIS TO CONSTRAIN DEFORMATION CONDITIONS IN THE BLUE RIDGE
EBSD and microstructural analysis was conducted on three locations within the Blue Ridge; the Tallulah Falls Dome in northeastern Georgia, the Toxaway Dome, which straddles the North and South Carolina border, and along the Fries and Gossan Lead faults in northwestern North Carolina. Each of these locations records the presence of at least one high strain zone which preserves a mylonitic fabric that overprints all previous fabrics. Consequently these mylonitic fabrics are interpreted to record the final ductile deformational event in each location. In each of these locations microstructural observations from recrystallization fabrics in quartz and feldspar provide broad temperature constraints that agree with more precise estimates from quartz opening angle thermometry. Results from all three locations record greenschist-amphibolite facies conditions and are consistent with dominantly non-coaxial strain.