@misc{indiciae60c1489ade33,
  title = {Geologic map of the Telluride quadrangle, southwestern Colorado},
  author = {Wilbur S. Burbank and Robert G. Luedke},
  year = {1966},
  doi = {10.3133/gq504},
  url = {https://pubs.usgs.gov/publication/gq504},
  note = {Source identifier: gq504}
}