@misc{indiciae44c3b02d70c4,
  title = {U-Pb zircon geochronology of Paleoproterozoic plutons from the northern midcontinent, USA: Evidence for subduction flip and continued convergence after geon 18 Penokean orogenesis},
  author = {D.K. Holm and W. R. Van Schmus and L.C. MacNeill and Terrence Boerboom and D. Schweitzer and D. Schneider},
  year = {2005},
  doi = {10.1130/b25395.1},
  url = {https://pubs.usgs.gov/publication/70029222},
  note = {Source identifier: 70029222}
}