@misc{indiciaec9750086de0f,
  title = {Composite dike of andesite and rhyolite at Klondyke, Arizona},
  author = {Frank S. Simons},
  year = {1963},
  doi = {10.1130/0016-7606(1963)74[1049:cdoaar]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70221085},
  note = {Source identifier: 70221085}
}