@misc{indiciae2dace1673efe,
  title = {Map showing geologic structures of the northern California continental margin},
  author = {S. H. Clarke},
  year = {1990},
  doi = {10.3133/mf2130},
  url = {https://pubs.usgs.gov/publication/mf2130},
  note = {Source identifier: mf2130}
}