Chapter D

Dakota hogback 43
Dakota Sandstone 22, 23, 24, 46
Dawson Formation 16
Dead-ice moraines 34
Definition 1
Deformation 11
Denver, Colo. 42
Denver Formation 16
Deposition 10, 11, 32, 44
Devils River 46
Devils Tower, Wyo. 37
Differential erosion 23, 25, 42
Dikes 25
Dinosaurs 16
Drift 34

E
Edwards Plateau 10, 19, 29, 46, 48
Eocene Epoch 16
Epilogue 49
Erosion 18
Escarpments 4, 7, 23, 34
Eskers 35

F
Farming 30
Fishers Peak 23
Fissures 20
Forests 1, 2, 7
Fort Union Formation 16, 40
Fossils 16
Frio River 46
Front Range 43

G
Gangplank 27
Gas 30, 47, 49
Glaciation 2, 5, 11, 33
Grand River 39
Great Bend, Kans. 2
Great Bend Plains 48, 49
Great Falls, Mont. 33, 35
Great Ice Age 5
Great Lakes 5
Guadalupe River 46
Gulf Coastal Plain 7

H
Harney Peak 20
Havre, Mont. 33
Heart River 33, 35, 39
Hell Creek Formation 11
High Plains 7, 10, 25, 45, 48
Highwood Mountains 33, 35, 36
Horses 16, 18
Hudson Bay 32, 33