Subject
Geology, Stratigraphic
Geology
10
Formations (Geology)
5
Stratigraphic correlation
5
Coal Geology
3
Sedimentation and deposition
2
Almond Formation (Wyo.)
1
Blair Formation (Wyo.)
1
Borings
1
Electric prospecting
1
Fox Hills Formation
1
Green River Formation
1
Mass-wasting
1
Mesaverde Group
1
Mines and mineral resources
1
Oil-shales
1
Petroleum Geology
1
Sandstone
1
Sedimentary structures
1
Wasatch Formation
1