@misc{indiciae445bf4336548,
  title = {A structural and stratigraphic excursion through the Shenandoah Valley, Virginia, May 7, 1994},
  author = {Randall C. Orndorff and Jack Burton Epstein},
  year = {1994},
  doi = {10.3133/ofr94573},
  url = {https://pubs.usgs.gov/publication/ofr94573},
  note = {Source identifier: ofr94573}
}