418 



INDEX. 



Page. 



Serpentinization of oliviue 388 



Shah 1 beds in Prospect Mountain limestone 38 



Shallow water deposits, White Pine shale 69 



Sierra Canyon, andesitie pearlite and dacite of 368 



Pogomp fauna 130 



fault 20 



Valley, a center of eruption 131 



Prosjicct Mountain limestone 129 



Signal Peak, stmcture 144 



Silica in basalt i'.!l 



Siliceous lii'da at Eureka 178 



Silurian and County Peak group 26 



at Highland Range 194 



Quartz Peak 199 



in Kritisb America 208 



Pahranagat Range 196 



Valley 195 



rocks 34.47 



Silverin Ruby Hill on- 312 



Peak. Olenelltts .shale 46 



Silverado and County Peak 25, 148 



Silverado Hills 149 



Soil 5 



Sorby. If. ('., secondary enlargement of quartz 347 



Spanish Mountain 24 



structure 1 40 



Spherulites in andesitic pearlite and dacite 371 



Spring Hill, grouping of fossils 88 



region of 171 



structure 168 



synclinal fold 29 



Valley 134 



and Sierra fault 14 



St. John fauna 46 



SI ampede G ap 187 



St rahlenberg 25 



basalt 386 



Stratified limestone, Richmond Mine 37 



Structural modifications of granite-porphyry 342. 343, 344 



features 209-217 



variations in granite-porphyry 225 



Structure of Timpahute Range 188 



Weber conglomerate 162 



Sugar Loaf 69.83.151 



Sulphides filling fissures 294 



on Ruby Hill 310 



Surprise- Peak 108 



Pogonip fauna 53 



Synclinal fold, Spring Hill 29 



Syncline in Weber conglomerate 162 



on Combs Peak 136 



west of Wood Cone 122 



T. 



Table Mountain, structure 138 



Tellurium on Prospect Ridge 313 



Temple Peak, structure 137 



Tertiary age of eruptions 232 



and post-Tertiary Volcanic Rocks 280-291 



lavas 30 



The Gate, Piflon Range 83, 144 



Thickness of beds at Diamond Peak 158 



Carboniferous 13, 84 



Devonian 13, 63 



Combs Peak 78 



Diamond Peak quartzite 13,85 



Eureka quartzite 13,57 



I'age. 



Thickness of Hamburg limestone 13, 40 



shale 13,41 



Lone Mountain limestone 13, 58 



Lower Coal- measure limestone. . . .13.85, 161, 170 



measures, Carbon Ridge 173 



Spring Hill 170 



Mountain shale 13, 38 



Nevada limestone 13,64 



Olenellus shale 42. 46 



Paleozoic rocks in British America 208 



Pogonip limestone 13, 49 



west of Wood Cone 123 



WbitePine 49 



Wood Cone 49 



Prospect Mountain limestone 13, 38 



quartzite 13, 35 



Secret Canyon shale 13,39 



Upper Coal-measures 13. 93. 164 



MoleenPeak 93 



Weber conglomerate 13, 92 



Carbon Ridge 173 



White Pine shale 13, 154 



Timber growth , Eureka Mountains 4 



Tinipahute Range 188 



Olenellos shale 46 



Tin on Prospect Ridge 313 



Titanite in granite 337,338 



Tiirnebohm, A. E., secondary enlargement of quartz.. 347 



Trachyte, age of 276 



Trachyte in Great liasin, absence of 280 



Trenton at White Pine 191 



fauna 24,50,57,59,183 



horizon 136 



in Lone Mountain limestone 57 



Pahranagat Range 196 



Tridymite in pyroxene-andesite 263, 36U 



Tucubit Mountains 202, 203 



Turner, H. W., andesite in California 261 



Unconformity between Carboniferous and Triassic. ... 10 



in Silurian 202 



Upper Coal-measures 164 



Upper and Lower Devonian, commingling of 148 



comparisons of 73 



Upper Coal-measure fauna 94 



limestone, area of 164 



Upper Coal-measures, Moleen Peak, thickness 93 



thickness 164 



Upper Helderberg fossils at Eureka 71, 132 



Upper Quaternary 32 



sub-aerial deposits 32 



Upper Silurian, distribution of 203, 206 



Uranium, Prospect Ridge 313 



V. 



Van Hise, C. R., secondary enlargement of quartz 347 



Variations from normal basalt 286 



rhyolite 2X6 



in lavas 274 



Volcanic action, history of 268-272 



activity, duration of 232 



rocks, age of eruptions 231 



microscopical characters 348 



natural succession of 278 



relative age of 249 



