@misc{indiciae40c3e604f2d5,
  title = {Generalized isopach map of (Jurassic) and possibly Lower Cretaceous shale, including Kingak Shale, eastern North Slope petroleum province},
  author = {G. H. Pessel and J.A. Levorsen and I.L. Tailleur},
  year = {1978},
  doi = {10.3133/mf928k},
  url = {https://pubs.usgs.gov/publication/mf928K},
  note = {Source identifier: mf928K}
}