ILLUSTRATIONS
Page [Colorado’s three geologic provinces] 2 [Pikes Peak, seen from the Garden of the Gods] 4 [Rock classification (chart)] 5 [Stratigraphic column (chart)] 7 [Jurassic rocks in Colorado (map)] 9 [East face of Longs Peak] 11 [Rocky Mountain National Park (east-west profile)] 12 [Big Thompson Canyon, west of Loveland] 13 [Red Rocks Amphitheater, west of Denver] 14 [Colorado Springs area (map and cross section)] 15 [Joint systems in Precambrian rocks, Boulder Canyon] 15 [Spanish Peaks, southwest of Walsenburg] 18 [Hahn’s Peak, north of Steamboat Springs] 19 [Gore Range from the east] 20 [Aspen Mountain geology (map)] 23 [Mt. Sopris, south of Glenwood Springs] 24 [Ouray, in the San Juan Mountains] 25 [Steamboat Rock, Dinosaur National Monument] 27 [Grand Hogback, near Rifle (block diagram)] 28 [Mt. Garfield, near Grand Junction] 30 [Precambrian-Cambrian unconformity south of Ouray] 34 [Geologic map of Colorado] 35 [Black Canyon of the Gunnison National Monument] 36 [Precambrian-Cambrian unconformity, Glenwood Canyon] 38 [Cambrian fossils] 39 [Ordovician fossils] 41 [Devonian fossils] 43 [Mississippian fossils] 44 [Pennsylvanian paleogeography (map)] 45 [Fountain Formation northwest of Denver] 45 [Pennsylvanian fossils] 46 [Contorted Pennsylvanian rocks near Gypsum] 46 [Balanced Rock, Garden of the Gods] 48 [Permian reptile tracks] 49 [The Flatirons, near Boulder] 50 [Colorado National Monument] 51 [Morrison Formation, west of Denver] 53 [Dinosaur bones, found near Morrison] 54 [Dakota Sandstone hogback] 56 [Cretaceous fossils] 57 [Wolford Mountain, north of Kremmling] 60 [Eohippus, the “Dawn Horse”] 61 [Golden and South Table Mountain] 62 [Devil’s Staircase, near Spanish Peaks] 63 [Green River oil shale, west of Rifle] 64 [Florissant Fossil Beds National Monument] 65 [Pawnee Buttes, north of Fort Morgan] 66 [Fossil mammals, northeastern Colorado] 67 [Glacial lakes in Rocky Mountain National Park] 68 [Arapaho Glacier, west of Boulder] 70 [Pleistocene mastodons] 72 [Great Sand Dunes National Monument] 73 [Colorado Mineral Belt (map)] 78 [Sluicebox mining in early Colorado] 81 [Early-day Leadville] 82 [Gold dredge, Fairplay] 84 [Silverton, in the San Juan Mountains] 86 [Abrams Mountain, south of Ouray] 87 [Creede and its mines (map)] 89 [Cripple Creek, near Pikes Peak] 90 [Climax molybdenum mine (cross section)] 91 [Rampart Range quarry, near Colorado Springs] 98 [Yule Marble quarry, near the town of Marble] 99 [Lyons Sandstone quarry] 100 [University of Colorado Museum] 100 [Colorado-Big Thompson Project (cross section)] 103 [San Luis Valley (cross section)] 105 [Cave of the Winds, near Manitou] 107 [Mesa Verde cave and Indian dwellings] 108 [Glenwood Hot Springs] 109