@misc{indiciae62cc50e0c949,
  title = {Geologic map of the Big Mesa quadrangle, Gunnison County, Colorado},
  author = {David Carl Hedlund},
  year = {1974},
  doi = {10.3133/gq1153},
  url = {https://pubs.usgs.gov/publication/gq1153},
  note = {Source identifier: gq1153}
}