@misc{indiciaee5f946dbff78,
  title = {Geologic map of the Lake City Caldera area, western San Juan Mountains, southwestern Colorado},
  author = {Peter W. Lipman},
  year = {1976},
  doi = {10.3133/i962},
  url = {https://pubs.usgs.gov/publication/i962},
  note = {Source identifier: i962}
}