@misc{indiciae56c0b9da1ae3,
  title = {Geology of the Ouray quadrangle, Colorado},
  author = {Robert G. Luedke and Wilbur S. Burbank},
  year = {1962},
  doi = {10.3133/gq152},
  url = {https://pubs.usgs.gov/publication/gq152},
  note = {Source identifier: gq152}
}