@misc{indiciaefda54cedebe0,
  title = {Geology and complex collapse mechanisms of the 3.72 Ma Hannegan caldera, North Cascades, Washington, USA},
  author = {David S. Tucker and Wes Hildreth and Tom Ullrich and Richard M. Friedman},
  year = {2007},
  doi = {10.1130/b25904.1},
  url = {https://pubs.usgs.gov/publication/70032860},
  note = {Source identifier: 70032860}
}