@misc{indiciae54997dc6ff10,
  title = {Geologic map of the Skull Creek quadrangle, Moffat County Colorado},
  author = {R. E. Van Loenen and Gary Selner and W. A. Bryant},
  year = {1999},
  doi = {10.3133/i2647},
  url = {https://pubs.usgs.gov/publication/i2647},
  note = {Source identifier: i2647}
}