@misc{indiciae5acd1f7671fe,
  title = {Geologic map of the Alamosa 30’ × 60’ quadrangle, south-central Colorado},
  author = {Ren A. Thompson and Ralph R. Shroba and Michael N. Machette and Christopher J. Fridrich and Theodore R. Brandt and Michael A. Cosca},
  year = {2015},
  doi = {10.3133/sim3342},
  url = {https://pubs.usgs.gov/publication/sim3342},
  note = {Source identifier: sim3342}
}