@misc{indiciae7be38f89d1f9,
  title = {Altered volcanic ash partings in the C coal bed, Ferron Sandstone member of the Mancos Shale, Emery County, Utah},
  author = {Don M. Triplehorn and Bruce Forbes Bohor},
  year = {1981},
  doi = {10.3133/ofr81775},
  url = {https://pubs.usgs.gov/publication/ofr81775},
  note = {Source identifier: ofr81775}
}