@misc{indiciae106e5611e163,
  title = {Bimodal Silurian and Lower Devonian volcanic rock assemblages in the Machias-Eastport area, Maine},
  author = {Olcott Gates and R. H. Moench},
  year = {1981},
  doi = {10.3133/pp1184},
  url = {https://pubs.usgs.gov/publication/pp1184},
  note = {Source identifier: pp1184}
}