@misc{indiciaea05268b58bb3,
  title = {Reconnaissance geologic map of the western half of the Marcum Mountain Quadrangle, Powell County, Montana},
  author = {W. Mark Weber and Irving Jerome Witkind},
  year = {1979},
  doi = {10.3133/ofr79445},
  url = {https://pubs.usgs.gov/publication/ofr79445},
  note = {Source identifier: ofr79445}
}