@misc{indiciae0eda960b4ef4,
  title = {Strontium isotopes in Quaternary basalts of southeastern California},
  author = {Z. E. Peterman and I. S. E. Carmichael and A. L. Smith},
  year = {1970},
  doi = {10.1016/0012-821x(70)90078-6},
  url = {https://pubs.usgs.gov/publication/70009945},
  note = {Source identifier: 70009945}
}