@misc{indiciae9ccea95ed772,
  title = {Geologic map of the northeast flank of the Blacktail Mountains, Beaverhead County, Montana},
  author = {R. G. Tysdal},
  year = {1988},
  doi = {10.3133/mf2041},
  url = {https://pubs.usgs.gov/publication/mf2041},
  note = {Source identifier: mf2041}
}