@misc{indiciae8e4cd05c906e,
  title = {Mesozoic ash-flow caldera fragments in southeastern Arizona and their relation to porphyry copper deposits},
  author = {P. W. Lipman and D.A. Sawyer},
  year = {1985},
  doi = {10.1130/0091-7613(1985)13<652:macfis>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70012966},
  note = {Source identifier: 70012966}
}