@misc{indiciae90fc25d736b2,
  title = {Map showing Quaternary geology and geomorphology of the Granite Park area, Grand Canyon, Arizona},
  author = {Richard Hereford and Kelly J. Burke and Kathryn S. Thompson},
  year = {2000},
  doi = {10.3133/i2662},
  url = {https://pubs.usgs.gov/publication/i2662},
  note = {Source identifier: i2662}
}