TY - RPRT TI - Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: characteristics, extent, and tectonic significance AU - James Tull AU - Christopher S. Holm-Denoma AU - Clinton I. Barineau PY - 2014 DO - 10.1130/b30967.1 UR - https://pubs.usgs.gov/publication/70140686 ID - 70140686 ER -