@misc{indiciae6bde833c8140,
  title = {Geologic map of the Silent Butte quadrangle, Nye County, Nevada},
  author = {Einar Bartlett Ekren},
  year = {1964},
  doi = {10.3133/tei850},
  url = {https://pubs.usgs.gov/publication/tei850},
  note = {Source identifier: tei850}
}