@misc{indiciae7bef1cb8352e,
  title = {Geology and geochemistry of volcanic centers within the eastern half of the Sonoma volcanic field, northern San Francisco Bay region, California},
  author = {Donald S. Sweetkind and James J. Rytuba and Victoria E. Langenheim and Robert J. Fleck},
  year = {2011},
  doi = {10.1130/ges00625.1},
  url = {https://pubs.usgs.gov/publication/70004605},
  note = {Source identifier: 70004605}
}