@misc{indiciae76e2e467d9c0, title = {Simplified stratigraphic cross sections of the Eocene Green River Formation in the Piceance Basin, northwestern Colorado}, author = {John D. Dietrich and Ronald C. Johnson}, year = {2013}, doi = {10.3133/ofr20131012}, url = {https://pubs.usgs.gov/publication/ofr20131012}, note = {Source identifier: ofr20131012} }