@misc{indiciaeea89a92a3d8e,
  title = {A geologic history of the north-central Appalachians, part 2: The Appalachian basin from the Silurian through the Carboniferous},
  author = {R. T. Faill},
  year = {1997},
  doi = {10.2475/ajs.297.7.729},
  url = {https://pubs.usgs.gov/publication/70019887},
  note = {Source identifier: 70019887}
}