@misc{indiciae6fd6fab6e82c,
  title = {Preliminary geologic map of the Rifle Falls Quadrangle, Garfield County, Colorado},
  author = {M. W. Green and G. M. Fairer and R. R. Shroba},
  year = {1993},
  doi = {10.3133/ofr93700},
  url = {https://pubs.usgs.gov/publication/ofr93700},
  note = {Source identifier: ofr93700}
}