@misc{indiciae2acc0b527213,
  title = {Clay mineral content of continental shelf and river sediments, southern California},
  author = {James R. Hein and Jennifer S. Dowling},
  year = {2001},
  doi = {10.3133/ofr0177},
  url = {https://pubs.usgs.gov/publication/ofr0177},
  note = {Source identifier: ofr0177}
}