@misc{indiciae28234a2f0260,
  title = {Geological Society of Washington},
  author = {W.F. Morsell},
  year = {1897},
  doi = {10.1126/science.5.110.238},
  url = {https://pubs.usgs.gov/publication/70010898},
  note = {Source identifier: 70010898}
}