@misc{indiciae5a4601175f7e,
  title = {Geologic Map of the North Cascade Range, Washington},
  author = {Ralph A. Haugerud and Rowland W. Tabor},
  year = {2009},
  doi = {10.3133/sim2940},
  url = {https://pubs.usgs.gov/publication/sim2940},
  note = {Source identifier: sim2940}
}