@misc{indiciae2c529d9c8d4e,
  title = {Red and gray clay underlying ore-bearing sandstone of the Morrison formation in western Colorado},
  author = {Alice Dowse Weeks},
  year = {1951},
  doi = {10.3133/ofr5185},
  url = {https://pubs.usgs.gov/publication/ofr5185},
  note = {Source identifier: ofr5185}
}