@misc{indiciaecde49ce04e3f,
  title = {Geologic map and map database of northeastern San Francisco Bay region, California: Most of Solano County and parts of Napa, Marin, Contra Costa, San Joaquin, Sacramento, Yolo, and Sonoma Counties},
  author = {Russell Walter Graymer and David Lawrence Jones and Earl E. Brabb},
  year = {2002},
  doi = {10.3133/mf2403},
  url = {https://pubs.usgs.gov/publication/mf2403},
  note = {Source identifier: mf2403}
}