@misc{indiciaeedafd03add68,
  title = {The volcanic history of the San Juan Mountains, Colorado},
  author = {Esper S. Larsen},
  year = {2014},
  doi = {10.1029/tr010i001p00105},
  url = {https://pubs.usgs.gov/publication/70220035},
  note = {Source identifier: 70220035}
}