@misc{indiciaed89c2385c47b,
  title = {Geology and Rb-Sr ages of reactivated Precambrian gneisses and granite in the Marenisco-Watersmeet area, northern Michigan},
  author = {P.K. Sims and Zell E. Peterman},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70232773},
  note = {Source identifier: 70232773}
}