Chapter D

Delta, 7, 8, 49
Delta, Deerfield River, 58, 95
Delta, Florence, 89
Delta, glacial lakes, 49, 69
Delta, Long Plain Brook, 98
Delta, Millers River, 58
Delta, Sawmill River, 99
Delta, Westfield River, 62
Desert climate, Triassic, 46
Devonian, 39
Diabase, 62, 115
Dike, 32, 32 P, 42
Dinosaur habits, 67
Dinosaur tracks, 22, 22 P, 66, 66 P, 81, 96
Dinosaurs, 18, 46
Dinosaurs, bipedal, 67
Disturbance, Appalachian, 42
Disturbance, Shickshock, 40
Disturbance, Taconic, 40
Drainage, Atlantic, 15, 47
Drumlin, South Amherst, 9, 84
Dunes, 4, 49, 56, 87, 98

E
Earthquakes, ancient, 19, 26
Eastern Upland, 32, 33, 37
Entrenched valleys, 12
Eocene period, 46
Erratics, 8, 82, 89
Everlasting hills, 11

F
Fans, alluvial, 19
Fault, buried, 24
Fault, eastern border, 19, 25
Fault fissure, 66
Faulting, at Notch, 73, 75
Fault movement, 25, 26, 60
Faults, Turners Falls, 44
Fish, extinction of Triassic, 68
Fish fossils, Durham, Conn., 22
Fish fossils, Sunderland, Mass., 22, 68
Fish, living conditions, 68
Fish, Triassic, 22
Fish, Whittemore's Ferry, 69
Flood level, 1936, 82, 96, 97
Floodplain, 3, 4, 79
Floods, 1, 3, 4, 6
Floor, Triassic basin, 30
Folds, 34, 36, 40, 42
Footprint localities, 66, 68
Footprints, dinosaur, 22, 22 P, 67, 84
Fore-set beds, 8
Forests, oldest, 40

G
Galena, 20, 30, 63, 108
Garnet, 111
Glacier, 8, 9, 21, 42, 46
Glacier recession, 9, 49
Glacier slope, 48
Glaciers, Permian age, 42
Gneiss, 28, 118
Gneiss, horizontal, 97
Gneiss, Pelham, 79
Gorge, Cold River, 92
Gorge, Deerfield River, 56, 92, 92 P
Gorge, Little Westfield, 105
Gorges, buried, 10
Gorges, Pliocene age, 48
Grade of rivers, 15
Granite, 21, 28, 33, 34, 42, 54, 116
Granite, pre-Triassic, 100
Granite quarry, 88
Granodiorite, 116
Granodiorite porphyry, 116
Granodiorite, Williamsburg, 64
Graywacke, 114

H
"Horse sheds," 76
Hot springs, 30, 42
Hudson drainage, 15
Hurricane, 12