@misc{indiciae6ecc4f508462,
  title = {The significance of pre-existing, deeply weathered crystalline rock in interpreting the effects of glaciation in the Minnesota River valley, U.S.A.},
  author = {C. J. Patterson and Terrence Boerboom},
  year = {2017},
  doi = {10.3189/172756499781821995},
  url = {https://pubs.usgs.gov/publication/70021580},
  note = {Source identifier: 70021580}
}