Columbia subject headings:
Geology, Stratigraphic--Cretaceous.
Geology, Structural--Canada, Western.
Geology, Structural--West (U.S.)
Geology--Canada, Western.
Geology--West (U.S.)
Sedimentation and deposition--Canada, Western.
Sedimentation and deposition--West (U.S.)
Harvard subject headings:
Geology, Stratigraphic--Cretaceous
Geology, Structural--Canada, Western.
Geology, Structural--West (U.S.)
Geology--Canada, Western.
Geology--West (U.S.)
Sedimentation and deposition--Canada, Western.
Sedimentation and deposition--West (U.S.)
Princeton subject headings: