@misc{indiciaecdbb89e40898,
  title = {Volcanic history of the San Juan Mountains, Colorado, as indicated by potassium-argon dating},
  author = {Peter W. Lipman and Thomas A. Steven and Harald H. Mehnert},
  year = {1970},
  doi = {10.1130/0016-7606(1970)81[2329:vhotsj]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70206956},
  note = {Source identifier: 70206956}
}