@misc{indiciae3ba6be5a5821,
  title = {Origin of the Chattanooga shale},
  author = {L. C. Conant},
  year = {1952},
  doi = {10.3133/ofr5226},
  url = {https://pubs.usgs.gov/publication/ofr5226},
  note = {Source identifier: ofr5226}
}