@misc{indiciae8bbda48e486d, title = {Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: characteristics, extent, and tectonic significance}, author = {James Tull and Christopher S. Holm-Denoma and Clinton I. Barineau}, year = {2014}, doi = {10.1130/b30967.1}, url = {https://pubs.usgs.gov/publication/70140686}, note = {Source identifier: 70140686} }