INDEX. 



875 



Page. 



Green Eiver, Course of 193 



■when deterinined 194, 205, 282 



Eocene 240 



Barrel Springs 2U 



Bear fiiver 239 



Clierokeo Eidge 218 



coal in 244, 455, 498, 595, 601 



described 203,240 



Dixie Valley 562 



Elko Valley 595, CO 1 



fauiiaof 241 



Eontanelle Creek 239 



Henry's Tork Basin 266 



movement in 2D4 



Ombe Mountains 498 



Peoquop Pass 501 



Piedmont, Wyoming 244 



Pino Bluffs, Wyoming 213 



PiSon Range 531 



Eush Valley, Utah 455 



Table Kock, Wyoming 212 



tliickness of 204, 240, 595 



Grizzly Buttes, Bridger Eocene 245 



Gunnison's Island, Salt Lake 46.5 



Gypsum in Colorado Cretaceous 50, .'i4, 81, 159 



Jurassic 203,265 



Triassic 36, 46, 58, 79, 80, 262, 26,", 292 



Truckee Miocene 808 



Hague's Peak, altitude 19 



Hallstadt beds 723 



Halostachys occidentalis 745,795 



Hamilton Butte 491 



Ham's Hill, Fox Hill Cretaceous 241 



Hansel Mountains, basalt 424 



Ha:itz Peak, altitude 168 



basalt 173 



Dakota conglomerate 173 



rhyolite 174 



trar.hyte 173 



Iriassic ^ 174 



Hat Island 461 



Haiiynein trachyte 563,598 



HAVALLAH ANT) PaH-UtE llANGfeS 673 



ILVV ALLAH EANGE 673 



basalt breaking through granite. . 677 



diorite 683 



geological position of rhyolite..,. . 684 



geological structure 674, 681, 683 



granite 074 



granite-dike in granite 075 



propylite 679 



pyrites in diorite 684 



rhyolite 684 



Sonoma Canon, Star Peak Trias- 

 sic 682 



trachyte (quartz) 684 



Haystack Mountain, Bridger Eocene 215 



petrified tree 215 



Hills North of Humboldt Kiveb 737 



HeXKT'S EOKK BASOf 261 



Green River Eocene 266 



VermiUion Creek Eocene 266 



Heber Mountain, Wyoming Conglomerate 316 



Hobble's Caiion, Jurassic 315 



Page. 



Holmes Creek Valley, Humboldt Pliocene 5J0 



Obsidian 520 



Horizontal cavities in basalt 774,816 



Hornblende-gneiss, Laramie Hills 11 



Medicine Bow Range 99 



microlites in quartz 160 



porphyry, Augusta Mountains 651 



schist. Brush Creek, Medicine Bovr 



Range 100 



North Platte Calion 99 



Red Creek.. 270 



Horse C reek , fall of 23 



in Pliocene 741 



Hot Spring Butte 808 



Humboldt Lake described 743 



Humboldt Pliocene, Cache Valley 406, 417 



Deep Creek Valley 475 



erosion of 583,819 



Holmes' Creek Valley 520 



Humboldt Valley 740 



Huntington Valley 540 



Ogden Valley 418 



Omhe Mountains 498 



Pine Valley 583 



Pinon Range 551 



Squaw Valley '.... 619 



Terrace Mountains 42T 



Truckee Caiion 831 



Valley 817 



Valley 740 



basalt craters 741 



Humboldt Pliocene 740 



thickness of . . . 741 



Lake La Houtaa terraces 741, 742 



Quaternary, thickness of 749 



sulphur 74] 



Huntington Valley, Humboldt Pliocene 540 



Huatsville, Vermillion Creek Eocene ' 419 



Huronian, East Humboldt Range 537 



Medicine Bow Range 109 



Hyalite on andesite 823 



basalt 618,811 



rhyolite 606 



trachyte 838 



Hyalomelane tufa, Grass Cafion 785 



IBENPAH Mountains to Rubt Valley 470 



Ibenpah Mountains 472 



Ilmenite, Laramie Hill s 14, 16 



compared with Norwegian 



and Canadian 16 



IslandPark fault : 286 



Islands, Salt Lake 425,460 



Inclusions, mica in quartz 10 



salt-cubes in quartz 10, 160, 492, 603, 728 



Independence Spring, Nevada 522 



Valley, rhyolite 610 



Indian Cafion, West Humboldt Range 722, 728 



Pass, altitude 731 



Infusorial silica 767,770,771,820 



age of 771 



Inskip Cafion, Pah-Ute Range, Ju'^assic 710 



Tjiassic 709 



Interior Valleys, Wahsatch Range 417 



Iron in Cambrian 413 



