306 IKDEX. 



Page. 



Tertiary formations — Continued. 



Of the— 



Aquarius - 288,290,292 



Awapa 273 



Markagunt 189,191,204 



Moraine Valley - 270 



Pavant - 170 



Rabbit Valley - ...... 273 



Summit Valley - . 259,267,269 



Table Cliff 253,297 



Thousaud Lake Mountain 280 



Tushar 184 



Wasatch Plateau 166 



Unconformity with Cretaceous 11,158,280,288,290 



Texture of porphyry 97 



Tufaceous beds „ . 74 



Volcanic rocks 88,91 



Thousand Lake fault .....33,277,279,291,297 



Thousand Lake Mountain 280 



Trachy-dolerite 65 



Trachyte, age of eruptions of 59,180 



Argilloid „ 104,196,229,239,241,242,261,265,268,269,270,272,274 



Augitic 104,196,197,233,240,261,265,268,272 



Classification of 101,104 



Granitoid 104,190,229,239,241,261,265,268,274 



Hornblendic 190,229,240,242,258,260,265,272,295 



Hyaline 104 



Order of sequence 67,131-137 



Porphvritic 104 



Sanidin 101,268 



Occurring in — 



Aquarius Plateau 293, 295 



A \va pa 274 



Dog Valley 190,212 



Fish Lake Plateau 257,265 



Hilgard, Mount 271 



Markagunt Plateau 196,199 



Marviue, Mount 269 



Sevier Plateau 59,229,239,241,242 



Sevier Valley 212 



Terrill, Mount 268 



Tushar 177,180,181 



Trachytic obsidian 107,274 



Traehitic centers of eruption 59 



Triassic (Upper) 20,147 



Circle Cliffs 289 



Escalantc Basin 290 



Markagunt 207 



San Kafael swell 20 



Thousand Lake Mountain 281 



Water-Pocket fold 287 



Trumbull, Mount 252 



Tufas 57,09,71,192,243,249 



Tushar Range, general discussion of (Chap. VIII) 109 



Relations to District of High Plateaus 3 



