@misc{indiciae95d1d262c972,
  title = {Stratigraphic succession, isotopic ages, partial chemical analyses, and sources of certain silicic volcanic ash beds (4.0 to 0.1 m.y.) of the western United States},
  author = {Glen Arthur Izett},
  year = {1981},
  doi = {10.3133/ofr81763},
  url = {https://pubs.usgs.gov/publication/ofr81763},
  note = {Source identifier: ofr81763}
}