@misc{indiciaea0ceb1969473,
  title = {Seawater as the source of minor elements in black shales, phosphorites and other sedimentary rocks},
  author = {D.Z. Piper},
  year = {1994},
  doi = {10.1016/0009-2541(94)90044-2},
  url = {https://pubs.usgs.gov/publication/70017122},
  note = {Source identifier: 70017122}
}