@misc{indiciaef484ebda6799,
  title = {Isotopic age of the Black Forest Bed, Petrified Forest Member, Chinle Formation, Arizona: An example of dating a continental sandstone},
  author = {N. R. Riggs and S.R. Ash and A. P. Barth and G. E. Gehrels and J. L. Wooden},
  year = {2003},
  doi = {10.1130/b25254.1},
  url = {https://pubs.usgs.gov/publication/70024975},
  note = {Source identifier: 70024975}
}