TY - RPRT TI - Geologic cross section C-C' through the Appalachian basin from Erie County, north-central Ohio, to the Valley and Ridge province, Bedford County, south-central Pennsylvania AU - Robert T. Ryder AU - Michael H. Trippi AU - Christopher S. Swezey AU - Robert D. Crangle AU - Rebecca S. Hope AU - Elisabeth L. Rowan AU - Erika E. Lentz PY - 2012 DO - 10.3133/sim3172 UR - https://pubs.usgs.gov/publication/sim3172 ID - sim3172 ER -