@misc{indiciae6975bcb6c702,
  title = {Preliminary geologic map of the Forked Gulch Quadrangle, Garfield County, Colorado},
  author = {R. B. O'Sullivan and W. J. Hail},
  year = {1987},
  doi = {10.3133/mf1953},
  url = {https://pubs.usgs.gov/publication/mf1953},
  note = {Source identifier: mf1953}
}