@misc{indiciaef9a1cc897ba4,
  title = {Preliminary geologic map of the Port Chicago quadrangle, Solano and Contra Costa Counties, Calif.},
  author = {T. W. Dibblee},
  year = {1981},
  doi = {10.3133/ofr81108},
  url = {https://pubs.usgs.gov/publication/ofr81108},
  note = {Source identifier: ofr81108}
}