@misc{indiciae8bb4b3400a51,
  title = {Geologic maps of western and northern parts of Gallatin National Forest, south-central Montana},
  author = {A. B. Wilson and J. E. Elliott},
  year = {1997},
  doi = {10.3133/i2584},
  url = {https://pubs.usgs.gov/publication/i2584},
  note = {Source identifier: i2584}
}