416 



INDEX. 



Page. 



Opal in andesite 234 



Oquirrh Range, Olenellus shale 46, 186 



Ore, age of 300,316 



bodies, age of. 293 



Deposits 292-316 



Enby Hill 301, 306, 311 



in Carboniferous, absence of. 298 



Eateka Tunnel 105 



on Hoosac Mountain 113 



Ores deposited as sulphides 310 



earlier than basalt 293 



later than rhyolite 293 



of Prospect Kidge 300 



theCambrian 294 



Devonian 297 



Silurian 296 



Origin of lavas 272 



Orographic blocks 10, 19 



P. 



Packer Basin 131 



Pahranapat Range 196-200 



Paleontological classification 182 



Paleozoic ocean, western limit of 175 



Rocks, Discussion of 175-217 



in British America, thickness 208 i 



Great Basin 208 ! 



section, Eureka 11-18 j 



thickness, Cambrian 13 



Carboniferous ... 13 



Devonian 13 



Silurian 13 



shore-line 175, 177 



Pancake Ridge, coal seams 95 



Partial magmas 287 



Peaks and Mountains 



Alpha Peak 159 



Anchor Peak 146 



Argyle Mountain 193 



Atrypa Peak 65,75,76,125 



Basalt Peak 25 j 



Bellevne Peak 23,119,120 



Combs Peak 65.75,76,78,135 



Devon Peak 138 



Diamond Peak 155. 157 



Dome Mountain 147. 174, 244 



English Mountain 149 



Fusilina Peak 159,161 



Gray Fox Peak 110. 2: 



Grays Peak 133 



Honsac Mountain 112 



Island Mountain 80, 151 



Leader Mountain 151 



Lone Mountain 60 



Lookout Mountain 22. 129 



Modoc Peak 65, 75, 141, 142 



Moleen Peak 181 



Newark Mountain . .65, 1 55 



Pinnacle Peak 126,129 



Pinto Peak 238 



Purple Mountain 238 



Quartz Peak 199, 204 



Ravens Nest 200.203 



Round top Mountain Ill 



Sentinel Peak 69 



Peaks and Mountains Continued. Page. 



Sign al Peak 141, 144 



Silver Pe.ik 189 



Spanish Mountain 140 



Strablc. il* rg 25, 162, 386 



Sugar Loaf 69,79,83,151 



Surprise Peak 108, 131 



Table Mountain 138 



Temple Peak 137 



White Cloud Peak 119 



White Mountain 126 



Woodpeckers Peak 65, 73, 78 



Penfleld, S. L., analysis of basalt 282 



Phillips, J. A., secondary enlargement of quartz 347 



Phosphoric acid in Cambrian limestone 38 



Physical classification of formations 184 



Piedmont ite in basalt 393 



Pinnacle Peak fault 126,129 



PinonKange 200,323 



section across 201 



The Gate : 83,144 



Pinto Basin, basalt 386 



fault displacement 18 



Peak rhyolite 238,374 



Piute Range 9 



Plant remains in Carboniferous 87,167 



Great Basin 180 



Hayes Canyon 82 



White Pine shale 69 



Pliocene age of lavas 289 



ores 316 



Pogonip fauna 49 



CaribouHill 53 



Fish Creek Mountains 53 



Graptolites in 54 



Lone Mountain 60 



Surprise Peak 53 



White Mountain 52,127 



limestone, description 48 



Pahranagat Range 197 



west of Wood Cone, thickness 123 



White Pine 48, 191 



White Pine, thickness 49 



Wood Cone, thickness 49 



Potsdam fauna 43,46,49,183 



Pre-Cambrian barrier in East Humboldt Range 176 



Pre-Tertiary erosion 232 



Igneous Rocks 218-229 



Price, Thomas, analyses of limestones 37 



Propylite, ageof 276 



in Great Basin, absence of. 279 



Prospect Mountain limestone, breccias in 36 



description 36 



dolomite in 36 



horizons of fossils 41 



marble in 36 



Olenellus shale 42 



Sierra Valley 129 



stratification in 36 



thickness 38 



quartzite, absence of fossils 35. 41 



anticline 21 



description 35 



thickness 35 



tunnel 105 



fissures in 106 



Peak, altitude 4 



