TY - RPRT TI - A geologic history of the north-central Appalachians. Part 1. Orogenesis from the Mesoproterozoic through the Taconic orogeny AU - R. T. Faill PY - 1997 DO - 10.2475/ajs.297.6.551 UR - https://pubs.usgs.gov/publication/70019849 ID - 70019849 ER -