@misc{indiciae3d0501ece023,
  title = {Tectonics of the Maryland Piedmont along the Potomac River; insight since 1960 and potential transfer to the Pennsylvania Piedmont},
  author = {C. Scott Southworth},
  year = {2010},
  url = {https://pubs.usgs.gov/publication/70044346},
  note = {Source identifier: 70044346}
}