@misc{indiciaef6c82991116b,
  title = {Geology of Precambrian rocks and isotope geochemistry of shear zones in the Big Narrows area, northern Front Range, Colorado},
  author = {Jeffrey T. Abbott},
  year = {1970},
  doi = {10.3133/ofr701},
  url = {https://pubs.usgs.gov/publication/ofr701},
  note = {Source identifier: ofr701}
}