@misc{indiciae43efa5685c1c,
  title = {Archean and early Proterozoic tectonic framework of north-central United States and adjacent Canada},
  author = {P.K. Sims},
  year = {1995},
  doi = {10.3133/b1904t},
  url = {https://pubs.usgs.gov/publication/b1904T},
  note = {Source identifier: b1904T}
}