@misc{indiciae74acb97ced05,
  title = {The Geologic Story of Colorado's Sangre de Cristo Range},
  author = {David A. Lindsey},
  year = {2010},
  doi = {10.3133/cir1349},
  url = {https://pubs.usgs.gov/publication/cir1349},
  note = {Source identifier: cir1349}
}