Title: Chart showing intertongued units of the Eocene Green River and Uinta formations, northwestern Piceance Creek Basin, northwestern Colorado /
Authors: Hail, William J. 1922-; Geological Survey (U.S.)
Publisher: The Survey ; For sale by Map Distribution,
Year: 1987
Subjects: Geology, Stratigraphic Charts, diagrams, etc.; Formations (Geology) Colorado Piceance Creek Basin Charts, diagrams, etc.; Green River Formation Maps.; Piceance Creek Basin (Colo.) Maps.