@misc{indiciaed2de9e828235,
  title = {Geologic map and map database of western Sonoma, northernmost Marin, and southernmost Mendocino counties, California},
  author = {M.C. Blake and R. W. Graymer and R.E. Stamski},
  year = {2002},
  doi = {10.3133/mf2402},
  url = {https://pubs.usgs.gov/publication/mf2402},
  note = {Source identifier: mf2402}
}