@misc{indiciae5a30507c63e6,
  title = {The provenance and chemical variation of sandstones associated with the Mid-continent Rift System, U.S.A.},
  author = {R.L. Cullers and P. Berendsen},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/70020527},
  note = {Source identifier: 70020527}
}