@misc{indiciae16eecd0097a2,
  title = {Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado},
  author = {R. R. Shroba and G. M. Fairer and M. W. Green},
  year = {1994},
  doi = {10.3133/ofr94696},
  url = {https://pubs.usgs.gov/publication/ofr94696},
  note = {Source identifier: ofr94696}
}