@misc{indiciae2d38fdba1424,
  title = {Geologic map of the Paonia and Gunnison area, Delta and Gunnison counties, Colorado},
  author = {Margaret S. Ellis and David L. Gaskill and C.R. Dunrud},
  year = {1987},
  doi = {10.3133/coal109},
  url = {https://pubs.usgs.gov/publication/coal109},
  note = {Source identifier: coal109}
}