@misc{indiciaed3a5301af33d,
  title = {Geologic map and cross sections of parts of the Grand Junction and Delta 30' x 60' quadrangles, west-central Colorado},
  author = {Margaret S. Ellis and Virginia Gabaldo},
  year = {1989},
  doi = {10.3133/coal124},
  url = {https://pubs.usgs.gov/publication/coal124},
  note = {Source identifier: coal124}
}