@misc{indiciaec959468934c2,
  title = {Geologic map of the Rudolph Hill quadrangle, Gunnison, Hinsdale, and Saguache Counties, Colorado},
  author = {Jerry Chipman Olson},
  year = {1974},
  doi = {10.3133/gq1177},
  url = {https://pubs.usgs.gov/publication/gq1177},
  note = {Source identifier: gq1177}
}