P Pagoda Mountain, 68 Pagosa Springs, 102, 109 Paleozoic (see also Cambrian etc.), 7, 10, 11, 12, 14, 15, 17, 21, 22, 24, 26, 27, 28, 30, 34, 37, 38-50, 60, 64, 77, 95, 98, 106, 107 Paradox Basin, 4, 47, 95, 101 Paradox Valley, 30, 101 Park Range, 19-20, 35, 69 Parting Sandstone, 42 Pawnee Buttes, 9, 66, 67 Peak Province, see Mountain Province Peat, 75 Pennsylvanian, _Front._, 6, 7, 14, 23, 44-47, 48, 50, 83, 95, 101, 106, 109 Permian, _Front._, 7, 23, 48-50, 95, 99, 100, 101 Petroleum, 1, 29, 30, 75, 76, 94-96 Phosphoria Formation, 50 Piceance Basin, 29 Pierre Formation, 57, 94, 98 Pikes Peak, 3, 4, 11, 12, 15, 65, 90, 91, 110 Pikes Peak Granite, 4, 14, 33, 36 Plains Province, see Prairie Province Plateau Province, 3, 4, 9, 28-31, 35, 46, 71, 75, 93, 94, 96, 101, 103, 107, 110 Platte River, 3 Pleistocene, 7, 8, 25, 59, 68-73, 105, 106 Plum Creek, 112 Poncha Springs, 109 Prairie Province, 3, 8-10, 12, 35, 66, 72, 75, 94, 96, 103, 105 Precambrian, 7, 10, 11, 14, 15, 16, 17, 19, 20, 21, 26, 33-37, 40, 60, 64, 68, 77, 87, 91, 92, 93, 109 Princeton, Mt., 22 Pueblo, 23, 97 Pumice, 75 Purgatoire Formation, 105 Pyrites, 75 Q Quandary Peak, 21 Quaternary, 7, 8, 25, 59, 68-73, 105, 106 R Rabbit Ears Pass, 19 Rabbit Ears Range, 20, 35, 62 Radium, 93 Rampart Range, 15, 97, 98 Rangely, 29, 95 Raspberry Mountain, 112 Rattlesnake Reservoir, 103 Raton Basin, 61 Raton Pass, 61 Red Cliff, 39 Red Mountain, 88 Red Mountain Creek, 88 Red Rocks Park, 14, 37, 47 Redstone, 24 Rico, 26 Rico Range, 26 Rifle, 64 Rio Grande, 35 Roan Plateau, 28, 29, 35 Rocky Mountain National Park, 11, 12, 66, 68, 71, 104 Roncarbo, 97 Royal Gorge, 37, 71 Ruedi, 105