@misc{indiciae14b7a6eff413,
  title = {Geologic map of Late Cenozoic deposits of the Sacramento Valley and northern Sierran Foothills, California},
  author = {Edward J. Helley and David S. Harwood},
  year = {1985},
  doi = {10.3133/mf1790},
  url = {https://pubs.usgs.gov/publication/mf1790},
  note = {Source identifier: mf1790}
}