@misc{indiciae7a0488284ceb,
  title = {Maps showing thickness of the Morrison Formation and thickness and generalized facies of the members of the Morrison Formation in the Colorado Plateau region},
  author = {Lawrence C. Craig and C. N. Holmes and V. L. Freeman and T. E. Mullens and G. W. Weira},
  year = {1977},
  doi = {10.3133/ofr77516},
  url = {https://pubs.usgs.gov/publication/ofr77516},
  note = {Source identifier: ofr77516}
}