@misc{indiciaee2085767e6d8,
  title = {Geologic map of Cape Cod and the Islands, Massachusetts},
  author = {R. N. Oldale and R.A. Barlow},
  year = {1986},
  doi = {10.3133/i1763},
  url = {https://pubs.usgs.gov/publication/i1763},
  note = {Source identifier: i1763}
}