@misc{indiciaeb4bc4636aa08,
  title = {The eruptive and sedimentary rocks on Pigeon point, Minnesota and their contact phenomena},
  author = {William Shirley Bayley},
  year = {1893},
  doi = {10.3133/b109},
  url = {https://pubs.usgs.gov/publication/b109},
  note = {Source identifier: b109}
}