@misc{indiciae378ccec6455d,
  title = {Preliminary geologic map of the Altamont Quadrangle, Alameda County, California},
  author = {T. W. Dibblee},
  year = {1980},
  doi = {10.3133/ofr80538},
  url = {https://pubs.usgs.gov/publication/ofr80538},
  note = {Source identifier: ofr80538}
}