@misc{indiciae388c75cbe107,
  title = {Iridium in some calcic and calc-alkalic batholithic rocks of the western United States},
  author = {L. P. Greenland and D. Gottfried and R.I. Tilling},
  year = {1974},
  doi = {10.1016/0009-2541(74)90101-6},
  url = {https://pubs.usgs.gov/publication/70010969},
  note = {Source identifier: 70010969}
}