@misc{indiciae7fc7b1dadd2a,
  title = {Geologic map of Sao Miguel, Azores},
  author = {R. B. Moore},
  year = {1991},
  doi = {10.3133/i2007},
  url = {https://pubs.usgs.gov/publication/i2007},
  note = {Source identifier: i2007}
}