@misc{indiciae0686e349e767,
  title = {Geologic map of the Chatham quadrangle, Barnstable County, Cape Cod, Massachusetts},
  author = {Robert N. Oldale and Carl Koteff},
  year = {1970},
  doi = {10.3133/gq911},
  url = {https://pubs.usgs.gov/publication/gq911},
  note = {Source identifier: gq911}
}