@misc{indiciae74fe940dd074, title = {A study of the Cretaceous-Tertiary unconformity in the Piceance Creek basin, Colorado; the underlying Ohio Creek Formation (Upper Cretaceous) redefined as a member of the Hunter Canyon or Mesaverde Formation}, author = {Ronald C. Johnson and Fred E. May}, year = {1980}, doi = {10.3133/b1482b}, url = {https://pubs.usgs.gov/publication/b1482B}, note = {Source identifier: b1482B} }