@misc{indiciae3298c7357506,
  title = {Preliminary Precambrian basement map of Colorado – A geologic interpretation of the aeromagnetic anomaly map},
  author = {P.K. Sims and Viki Bankey and C. A. Finn},
  year = {2001},
  doi = {10.3133/ofr01364},
  url = {https://pubs.usgs.gov/publication/ofr01364},
  note = {Source identifier: ofr01364}
}