@misc{indiciae6af325fd326a,
  title = {Geologic map of the Commerce City quadrangle, Adams and Denver Counties, Colorado},
  author = {Robert M. Lindvall},
  year = {1980},
  doi = {10.3133/gq1541},
  url = {https://pubs.usgs.gov/publication/gq1541},
  note = {Source identifier: gq1541}
}