@misc{indiciae5489fbcabcda,
  title = {Geologic map of Nantucket and nearby islands, Massachusetts},
  author = {R. N. Oldale},
  year = {1985},
  doi = {10.3133/i1580},
  url = {https://pubs.usgs.gov/publication/i1580},
  note = {Source identifier: i1580}
}