TY - RPRT TI - The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont AU - Avery Ala Drake AU - Peter T. Lyttle PY - 1981 DO - 10.3133/pp1205 UR - https://pubs.usgs.gov/publication/pp1205 ID - pp1205 ER -