@misc{indiciae7568f3ad53b9,
  title = {Geologic map of the Smith Rock area, Jefferson, Deschutes, and Crook counties, Oregon},
  author = {Paul Thornton Robinson and D.H. Stensland},
  year = {1979},
  doi = {10.3133/i1142},
  url = {https://pubs.usgs.gov/publication/i1142},
  note = {Source identifier: i1142}
}