@misc{indiciae1d3036a16390,
  title = {A reconnaissance of the Archean complex of the Granite Gorge, Grand Canyon, Arizona},
  author = {L. F. Noble and J. Fred Hunter},
  year = {1917},
  doi = {10.3133/pp98i},
  url = {https://pubs.usgs.gov/publication/pp98I},
  note = {Source identifier: pp98I}
}