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 I Ice Age, 10, 48, 56 Icebergs, 8 Ice-cakes, 8 Ice dispersal centers, 48 Ice recession, rate, 49 Ice sheet, 5, 9, 52, 72 Ice thickness, 48 Indian campsites, 3 Indian graves, 3 Intrusive, 33 Inundation, 3 Iron ore, 34, 35 J Joints, Mt. Sugarloaf, 56 Jurassic period, 46 K Kame terraces, 82, 95 Kaolinite, 111 Kettle holes, 82, 83, 100 Kyanite, 111