@misc{indiciaef12d27b7a627,
  title = {Geochemical features and 40Ar/39Ar age of tholeiitic and mafic-alkalic dikes in Aroostook County, northeastern Maine},
  author = {David Gottfried and Raymond Macdonald and J.R. Sutter and Louis Pavlides},
  year = {1984},
  doi = {10.3133/b1612},
  url = {https://pubs.usgs.gov/publication/b1612},
  note = {Source identifier: b1612}
}