@misc{indiciae7415402b030c,
  title = {Geologic map of the Haystack Rock quadrangle, Moffat County, Colorado},
  author = {Wallace R. Hansen and Paul E. Carrara and Peter D. Rowley},
  year = {1980},
  doi = {10.3133/gq1535},
  url = {https://pubs.usgs.gov/publication/gq1535},
  note = {Source identifier: gq1535}
}