@misc{indiciae366373a03f19,
  title = {Geologic map of the Carpenter Ridge quadrangle, Gunnison County, Colorado},
  author = {David Carl Hedlund and Jerry Chipman Olson},
  year = {1973},
  doi = {10.3133/gq1070},
  url = {https://pubs.usgs.gov/publication/gq1070},
  note = {Source identifier: gq1070}
}