@misc{indiciaeff02a5489fb3,
  title = {Aeromagnetic mapping of the structure of Pine Canyon caldera and Chisos Mountains intrusion, Big Bend National Park, Texas},
  author = {B. J. Drenth and C. A. Finn},
  year = {2007},
  doi = {10.1130/b26150.1},
  url = {https://pubs.usgs.gov/publication/70031514},
  note = {Source identifier: 70031514}
}