@misc{indiciae2a5c0fd7e567,
  title = {Stratigraphic sections, depositional environments, and metal content of the upper part of the Middle Pennsylvanian Minturn Formation, Northern Sangre De Cristo Range, Custer and Saguache counties, Colorado},
  author = {R. F. Clark and D.M. Walz},
  year = {1985},
  doi = {10.3133/mf1622d},
  url = {https://pubs.usgs.gov/publication/mf1622D},
  note = {Source identifier: mf1622D}
}