@misc{indiciae168e3f87e02f,
  title = {Geologic map of the Tyrone Quadrangle, Grant County, New Mexico},
  author = {D. C. Hedlund},
  year = {1978},
  doi = {10.3133/mf1037},
  url = {https://pubs.usgs.gov/publication/mf1037},
  note = {Source identifier: mf1037}
}