Columbia subject headings:
Geology, Structural.
Geology--Colorado River Region (Colo.-Mexico)
Geology--Southwest, New.
Harvard subject headings:
Anderson, R. Ernest (Roy Ernest)
Colorado River (Colo.-Mexico)
Geology, Stratigraphic--Cenozoic
Geology, Stratigraphic--Mesozoic
Geology--Colorado River (Colo.-Mexico)
Geology--Colorado River Region (Colo.-Mexico)
Hamilton, Warren Bell, 1925-2018
Princeton subject headings:
Geology, Structural.
Geology--Colorado River region.
Geology--Southwest, New.