@misc{indiciae8643b1ba9e14,
  title = {Geologic Map and Map Database of the Oakland Metropolitan Area, Alameda, Contra Costa, and San Francisco Counties, California},
  author = {R. W. Graymer},
  year = {2000},
  doi = {10.3133/mf2342},
  url = {https://pubs.usgs.gov/publication/mf2342},
  note = {Source identifier: mf2342}
}