@misc{indiciaec86825614040,
  title = {Geologic map of the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina},
  author = {Richard Goldsmith and D.J. Milton and J. W. Horton},
  year = {1988},
  doi = {10.3133/i1251e},
  url = {https://pubs.usgs.gov/publication/i1251E},
  note = {Source identifier: i1251E}
}