@misc{indiciae0f6459349957,
  title = {Geologic map of Santa Cruz County, California: A digital database},
  author = {S. Graham and C. Wentworth and D. Knifong and R. Graymer and J. Blissenbach},
  year = {1997},
  doi = {10.3133/ofr97489},
  url = {https://pubs.usgs.gov/publication/ofr97489},
  note = {Source identifier: ofr97489}
}