262 
INDEX. 
Page. 
Colorado River, water supply of 234 
Colors, Aubrey sandstones 88 
Carboniferous 91,151 
Cretaceous 32 
Jurassic 38 
Permian 80, 151 
Pink cliffs 27 
valley of tbe Virgen 57 
Vermilion Cliffs 54 
Cones of Uinkaret 82,104, ICG, 109 
Conglomerate Shin-a-rump 44 
Corrasion 119, 120, 230, 251 
of the Colorado 227, 242 
originating reliefs 245 
of river channels 201 
Cretaceous age.... 212 
compared with Carboniferous 212 
land areas 214 
strata, Echo Cliffs 205 
former extent 33, 68, 214 
in the terraces IG, 31 
Cross-bedded sandstone, Aubrey 88, 159, 193, 254 
Jurassic 35, 69, 214 
Cusps 109, 259 
Declivity of Colorado 239 
Marble Canon ; 240 
side gorges 241 
Dellenbaugh, Mount 12 
De MottePark 135. 171, 186, 193 
Denudation, The Great Chap. IV 
of Grand Cafion district 3, 119, 189, 220, 225 
Deposition, continuity of 211 
in shallow waters 213 
Depths of Carboniferous ocean 210 
Grand Canon 22, 87, 142 
Descent of canon wall, Toroweap 97 
Ta-peats Amphitheater 159 
Desert scenery 79, 81, 124 
vegetation 80, 127 
Devonian 18, 207 
Diabase 180 
Dikes in caQon wall 95 
Dimensions of Grand Canon 87, 142, 144 
Dip of strata, general northward 46, 70 
increasing at bases of cliffs 47 
Marble Canon platform 203 
Paria Plateau 201 
of Plateau Province 213 
Displacements. (See Faults.) 
Drainage, lateral, of Grand Canon 48 
system of district 22 
evolution of 72, 217 
Kaibab 136,169,192,228 
Paria Plateau 201 
Drying up of Eocene lake 29, 220 
lateral streams 98, 99, 120, 194 
Eastern bend of Grand Canon 23 
East Kaibab monocline 13, 177, 183 
age of 199 
Echo Cliff*s monocline 74 
age of 205 
strata of 39,41 
view of 170 
Elevation of Grand Cafion district 69, 245 
Emma, Mount IOC 
platform 104 
Page. 
Eocene age 215 
former extension of. 31. 61, G8 
strata 16, 27 
Erosion, base-levels of 76 
details of Chap. XIV 
East Kaibab monocline 178 
factors of 64 
the great lesson 1, 61 
methods of 62 
Escalante monocline 215 
Esplanade of Grand Canon 87 
Evaporation 235 
Evolution of the Kaibab 187 
Excavation of tbe cafion Chap. XIH 
Extinct river of tbe Kaibab 192 
Faults — East Kaibab monocline 2, 13, 21, 177, 183, 184, 198 
Echo Cliff monocline 21, 39, 74, 205 
Grand Wash 2, 12, 19, 23, 42 
Hurricane 2, 5, 20 112, 116, 120, 200, 228 
Sevier 20 
Toroweap 2, 20, 85, 93 
West Kaibab 2, 21, 122, 1G2, 183 
Faults, age of 70, 226, 228 
general account of 19 
Firs of Kaibab 134 
Forest scenery 13, 131 
Forests, fossil 69 
Fresh-water lakes, Eocene 215 
Geometric profiles 147 
Gilbert, G. K., corrasion 231 
effects of arid climate 246 
Glacial period , 190, 196, 202, 228 
Grand Cafion, course of 2,4,22 
excavation of Chap. XIU 
descent of walls of 97, 159 
Grand Cafion district, denudation of. Chap. IV 
defined 9 
elevation of 69 
Grand River, flow of 235 
Grand Wash 12 
Triassic of 42 
Grand Wash fault 2, 12, 19, 23, 42 
Grandeur of Vermilion CUfis 52 
Granite Archman Kaibab 146 
Surprise Valley 161 
Great Basin shore line 30, 32, 38, 42, 65 
mainland Mesozoic 3,38,48,214 
topography 9,60 
Green River, flow of 225 
Ground plans of buttes 147, 258 
Gypsum 52,209 
Haze in Grand Cafion 152, 154 
Heterogeneity of strata, vertical 210, 245 
High Plateaus 2, 9, 28, 29 
Hindoo Amphitheater 109 
History of Grand Cafiou district Chap. XII 
Kaibab 187 
Homogeneity of strata, horizontal 210,245 
Horizoiitality of strata 118, 201, 208, 215 
House Rock Valley 201 
Hurricane fault 2, 5, 12, 20, 23, 41, 112, 116, 120, 200, 228 
Inner gorge, Kaibab 146 
rapid excavation of 121 
Toroweap 89, 91 
Joints, Triassic sandstone 53 
Jurassic, Echo Cliffs 205 
