@misc{indiciaebaafa8700d86,
  title = {Altitude of the top of the Inyan Kara Group in the Black Hills area, South Dakota},
  author = {Janet M. Carter and Jack A. Redden},
  year = {2000},
  doi = {10.3133/ha744a},
  url = {https://pubs.usgs.gov/publication/ha744A},
  note = {Source identifier: ha744A}
}