1. Geologic map of the western Blue Ridge and portions of the eastern Blue Ridge and Valley and Ridge provinces in southeast Tennessee, southwest North Carolina, and northern Georgia Yale Public content 2009. 2010-03-01T19:47:24Z. 2011-03-29T15:58:46Z. Thigpen, J. Ryan (James Ryan), 1979-. Geological Society of America. English. Public. Blue Ridge Mountains, Tennessee, North Carolina, and Georgia.