@misc{indiciaea51eb88b4690,
  title = {Geologic map of the Bonanza caldera area, northeastern San Juan Mountains, Colorado},
  author = {Peter W. Lipman},
  year = {2020},
  doi = {10.3133/sim3394},
  url = {https://pubs.usgs.gov/publication/sim3394},
  note = {Source identifier: sim3394}
}