Subject
Coal Geology
Geology, Stratigraphic
Geology
17
Coal mines and mining
5
Palynology
5
Sedimentation and deposition
4
Formations (Geology)
3
Williams Fork Formation (Colo. and Utah)
3
Almond Formation (Wyo.)
2
Clastic dikes
2
Fruitland Formation (Colo. and N.M.)
2
Ghazij Formation (Pakistan)
2
Mesaverde Group
2
Natural gas Geology
2
Paleogeography
2
Sandstone
2
Wasatch Formation
2
Coal reserves
1
Colorado
1
Dikes (Geology)
1
Fort Union Formation
1
Green River Watershed (Wyo.-Utah)
1
Mu Us Desert (China)
1
Natural gas
1
New Mexico
1
Paleoclimatology
1
Plate tectonics
1
San Juan Basin (N.M. and Colo.)
1
Sediments (Geology)
1
Sills (Geology)
1
Straight Cliffs Formation (Utah)
1
Stratigraphic correlation
1