@misc{indiciae1451a34dcbac,
  title = {A new tree-ring date for the "floating island" lava flow, Mount St. Helens, Washington},
  author = {D.K. Yamaguchi and R. Hoblitt and D.B. Lawrence},
  year = {1990},
  doi = {10.1007/bf00301535},
  url = {https://pubs.usgs.gov/publication/70016100},
  note = {Source identifier: 70016100}
}