R Raindrop imprints, 22 Recession of Atlantic, Pliocene, 48 Recession of ice, 9 Red rock basin, 18 Reeds, 67 Rift movement, 43, 44 Rift, Triassic, 43, 44 Ripple-marks, 22, 69 Roches moutonnées, 4 P, 9, 10 Rock-benches, 15 Rock, definition, 106 Rock, extrusive, 32 P Rock, history recorded, 112 Rock, igneous, 114 Rock, intrusive, 32 P Rock, metamorphic, 117 Rock mosaic, 17 Rock, sedimentary, 113 Rock, story of igneous, 114 Rock, story of metamorphic, 117 Rock, story of sedimentary, 113 Rock varieties, 106 S Salt crystals, casts, 67 Sand bar, 1 Sand dunes, 4 Sandstone, 71 Sandstone, Longmeadow, 83 Sandstone, “second,” 85 Sandstone, Silurian, 39 “Scallops,” 4, 56 Scallops, meander scarps, 56, 57 Schist, 28, 117 Schist, Conway, 95 Schist, garnetiferous, 118 Schist, Goshen, 89 Schists, volcanic, 92 Scour-channels, 1 Screes, 43 Sea, Cambrian, 36 Sea, Devonian, 35 Sea, Ordovician, 36 Sediments, Devonian, 24 Serpentine, 110, 118 Shale, 21, 22, 55, 68, 114 Shale, Chicopee, 18 Sheets, intrusive, 42, 62 Shickshock disturbance, 40 Shore, Lake Springfield, 80 Siderite, 64 Sill, 32 Silt, 3, 4, 21 Slate, 35, 36, 117 Slickensides, 66 Snowfields, Triassic, 21 Soapstone, 118 Soapstone, uses, 119 Sphalerite, 63, 108 Spodumene, 109 Springs, hot, 30 St. Lawrence drainage, 15, 47 Stock, 32 Stone fences, 9, 52, 80 Strath, 14, 15, 16, 47, 58, 92 P, 93 Striations, 9 Swales, 1, 98 Swamps, 40 T Taconic disturbance, 40 Talc, 111 Talus, 46 Terminal moraine, 8, 49 Terraced surface, 17 Terraces, 4, 7, 49, 79, 98, 104 Terraces, floodplain, 87 Terraces, meander cut, 95 Tertiary period, 16 Till, 8, 10 Top-set beds, 8 Torbernite, 110 Tourmaline, 109 Tracks, dinosaur, 66 Trail, Holyoke Range, 84 Triassic, 42 Triassic basin, filled, 13 Tuff, 25, 36, 81, 84 Tuff, Granby, 22 P, 25, 85 U Upland, Eastern, 32 Upland, New England, 18 Upland, Western, 32, 34 Uraninite, 110 Uranite, 110 U-shaped valley, 10 V Varve, 9 Varves, annual deposits, 69 Vein, Hatfield, 64, 88 Vein, Leverett, 65, 66 Vein, Whately, 64 Veins, lead, 63 Veins, Loudville, 30, 63 Volcanic necks, 23, 71 Volcanics, Cambro-Ordovician age, 36 Volcanics, Mt. Hitchcock, 29 Volcanoes, 23, 27 Volcanoes, Cambrian, 38 Volcanoes, Ordovician, 38 Volcanoes, Triassic, 43 V-shaped valley, 14 W Washout by flood, 87 Watergap, 3 Well, deep hole, 82 Western Upland, 32, 34, 37 Windblown sand, 4 Wulfenite, 64 Geographic Index “P” indicates plate following page number indicated.