@misc{indiciae27e70ddfd591,
  title = {Integrated Geologic, Geochemical, and Geophysical Studies of Big Bend National Park, Texas},
  author = {John E. Gray and Carol A. Finn and Lisa A. Morgan and William R. Page and Wayne C. Shanks},
  year = {2007},
  doi = {10.3133/fs20073078},
  url = {https://pubs.usgs.gov/publication/fs20073078},
  note = {Source identifier: fs20073078}
}