@misc{indiciae37d25119f83b,
  title = {Stratigraphic nomenclature databases for the United States, its possessions and territories},
  author = {M. E. MacLachlan},
  year = {1992},
  doi = {10.3133/ds6rel1},
  url = {https://pubs.usgs.gov/publication/ds6rel1},
  note = {Source identifier: ds6rel1}
}