@misc{indiciae586ecd34ca1c,
  title = {Surficial Geologic Map of the Mount Hopkins and northern part of the San Cayetano Mountains 7.5’ Quadrangles, Santa Cruz and Pima Counties, Arizona},
  author = {D. A. Lindsay and Bradley S. Van Gosen},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70218258},
  note = {Source identifier: 70218258}
}