@misc{indiciae52d012a92491,
  title = {Geologic map of the Grand Gulch Instant Study Area, San Juan County, Utah},
  author = {G. W. Weir},
  year = {1981},
  doi = {10.3133/mf1318},
  url = {https://pubs.usgs.gov/publication/mf1318},
  note = {Source identifier: mf1318}
}