@misc{indiciae85dee410405f, title = {SHRIMP and Conventional UPb ages of Ordovician granites and tonalites in the central Appalachian Piedmont: Implications for Paleozoic tectonic events}, author = {John N. Aleinikoff and J. Wright Horton, and Avery Ala Drake}, year = {2002}, doi = {10.2475/ajs.302.1.50}, url = {https://pubs.usgs.gov/publication/70209291}, note = {Source identifier: 70209291} }