@misc{indiciae5fb459cb57fe,
  title = {Geologic map of the San Andreas quadrangle, Calaveras County, California},
  author = {Lorin D. Clark},
  year = {1963},
  doi = {10.3133/gq222},
  url = {https://pubs.usgs.gov/publication/gq222},
  note = {Source identifier: gq222}
}