@misc{indiciaef7c68baa767f,
  title = {Map showing Quaternary geology and geomorphology of the Nankoweap Rapids area, Marble Canyon, Arizona},
  author = {Richard Hereford and Kelly J. Burke and Kathryn S. Thompson},
  year = {1996},
  doi = {10.3133/ofr96502},
  url = {https://pubs.usgs.gov/publication/ofr96502},
  note = {Source identifier: ofr96502}
}