@misc{indiciaef51e8a575639,
  title = {Geologic setting of the Glacier Peak and Mazama ash-bed markers in west-central Montana},
  author = {Richard Walter Lemke and M. R. Mudge and R.E. Wilcox and H. A. Powers},
  year = {1975},
  doi = {10.3133/b1395h},
  url = {https://pubs.usgs.gov/publication/b1395H},
  note = {Source identifier: b1395H}
}