@misc{indiciae418a9a5c56bd,
  title = {Methane-derived marine carbonates of pleistocene age},
  author = {J.C. Hathaway and E.T. Degens},
  year = {1969},
  doi = {10.1126/science.165.3894.690},
  url = {https://pubs.usgs.gov/publication/70010497},
  note = {Source identifier: 70010497}
}