@misc{indiciae9975c2ec2de1,
  title = {Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes},
  author = {B.L. Ingram and J.R. Hein and G. L. Farmer},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/70016197},
  note = {Source identifier: 70016197}
}