Chronology of Paleozoic metamorphism and deformation in the blue ridge thrust complex, north Carolina and Tennessee

摘要

The Blue Ridge province in northwestern North Caro- lina and northeastern Tennessee records a multiphase collisional and accretionary history from the Mesoproterozoic through the Paleozoic. To constrain the tectonothermal evolution in this region, radiometric ages have been determined for 23 regionally metamorphosed amphibo- lites, granitic gneisses, and pelitic schists and from mylonites along shear zones that bound thrust sheets and within an internal shear zone.