@misc{indiciaeea6b5e94d239,
  title = {Geologic map of the Chelsea quadrangle, Roosevelt and McCone Counties, Montana},
  author = {R. B. Colton},
  year = {1963},
  doi = {10.3133/i363},
  url = {https://pubs.usgs.gov/publication/i363},
  note = {Source identifier: i363}
}