@misc{indiciae684049d1fc43,
  title = {Preliminary digital geologic map of the Appalachian Piedmont and Blue Ridge, South Carolina segment},
  author = {J. Wright Horton and Connie L. Dicken},
  year = {2001},
  doi = {10.3133/ofr01298},
  url = {https://pubs.usgs.gov/publication/ofr01298},
  note = {Source identifier: ofr01298}
}