@misc{indiciae0ce009916fa3,
  title = {Bedrock geology of the Narragansett Pier quadrangle, Rhode Island},
  author = {Donald R. Nichols},
  year = {1956},
  doi = {10.3133/gq91},
  url = {https://pubs.usgs.gov/publication/gq91},
  note = {Source identifier: gq91}
}