806 



INDEX. 



Coal Creek, Seetoya Mou&taius, Wahsatch limestone. 



in Colorado Crataceous .,29'1, 



Pox Hill Cretaceous 85, 86, 252, 



Green Kiver Eocene ..244,455,498, 



Laramie Cietaceoas 61,02,04, 146, 



231,233,233,234,270,279, 



Trnckee Miocene 



Measure fossils, geographical distribution 



Mountain, White Kiver divide, Laramie Creta- 

 ceous 



of Carbon Basin described 



Coalville, TTtah, Colorado Cretaceous 



Colorado Cretaceous, Aspen Station 



Bel? evue Peak (east of) 



biuminous sandstone in 



Brush Creek 



carbon4n clays 



coal in 294, 



Coalville 



concretionary sandstone in . . 83, 



Deadman's Spring 



dinosaur in 



East CaiSon Creek 



Elk Mountain 



Elk River 



fishes in 89, 



gypsum in _.50, 54, 81, 



limestone in 



Medicine Botv Range, east base 



Xorth Park 



OF THE Colorado Range 



Oyster Ridge 



petroleum in 



railroad cat near Miser 



Red Creek Valley 



saurian teeth in 



Sheep Mountain (east of) 



Steve's Fork 



Sulphur Creek, anticlinal 



thickness of 28,43, 



turtles in 



XTinta Range 



Vermillion Creek Valley..:... 



Colorado Range. 



Colorado Cretaceous 



east base, Fort Benton Group... 



Fort Pierre Group 



Jurassic limestone 



limestone in Triaseic. 

 thickness of strata ex- 

 posed 



thickness of Palaeozoic 



strata 



Kiobrara Cretaceous 



garnets in Archaean 



limit of timber-growth 



magnetite in Archaean 



mica schist 



prophyry dikes 



Coloi ing matter of lithoidal rhyolites 



Columnar structure in basalt 



dacite 



rhj elite 701, 



trachyte 



COMO ANTXLINAL 



Page. 



604 

 290, 314 

 327, 330 

 595, 601 

 164. 230, 

 330, 337 

 659, 849 



670 



279 



146 



336 



253, 326 



82 



121 



296 



81 



296, 314 



336 



156, 297 



201 



296 



383 



149 



182 



296, 326 



156, 159 



55 



84,85 



116 



41 



251 



252, 329 



84 



271 



84 



81 



172 



327 



116,201 



296 



201 



276 



2 



28,43 



42 



42 



58 



35,85 



199 



42 



26 



21 



26 



25 



25 



698, 846 



179, 180 



620 



790, 830 



171 



90 



Page. 



Como Anticlinal, Dakota Cretzceons 91,92 



Como Lake described 90, 92 



Ridge described 90 



Jurassic 91 



section of Meeozoic 91 



Concrete Plateau , Wyoming Conjilomerate 247 



Concretionary sandstone in Colorado Cretaceous.. 84, 156, 297 



Conglomerate in Cambrian 399 



Upper Coal-Measures 325 



Connecticut diabase 728 



Connor Peak, Oquirrh Mountains, Upper Coal-Meas- 

 ures limestone 452 



Conoidal structure in granite 350,619 



Cooper Creek, Fox Hill Cretaceous 86 



Lake described 74 



Copenhagen Valley described 418 



Copper vein, Battle Mountains f-7l 



CORTEZ AND PaPPOOSE PEAK REGION 577 . 



Cortez mining district 573 



Peak, quartzpropylite / 577 



rhyolites 579 



Cortez Range 5*0 



andesite 584,586,588 



basalt : 575 



dacite 581,582,.^84 



diorite 571,573 



granite 576 



propylite 610 



quartz-propy lite 577, 580 



rhyolite ....579,585,589,012 



sy enite-prophy ry 585 



thickness of Palaeozoic 575 



fachjte 580,585,587 



Cottonwood Canons, Wahsatch Range, glacial erosion 354, 356 



Rkgion ". 353 



Coyote Cafion, West Humboldt Range. 719, 721 



Crater cones, basalt over rhyolite 665 



Crawford Pass, Peoquop Range, anticlinal 510 



Crawley Butte, North Park, Arch aean 127, 1 35 



Crescent Peak, Augusta Mountains, aniesite 652 



Elkhead Mountains, trachyte 171 



Cretaceous age of Bear River Cit;? deposits 328 



between Uinta and Wahsatch, structure. 334 



Plains of Colorado 58 



Region from Como to Separation — 143 



thickness, Uinta Range 200 



Uplift of Bitter Creek 227 



Oyster Ridge 250 



Crow Creek described ■ 52 



Croydon, Dakota conglomerate 391 



Crusoe Canou, Pah-tson Mountains, Archaean granite 776 



Curlew Valley 425 



Cyanite in Archaean, Red Creek ; 270 



quartzites, Medicine Bow Range 104 



Dacie Cafion, Fish Creek Mountains' rhyolite 664 



Dacite, Berkshire Cafion 843 



columnar structure 6c0 



Cortez Range 582 



dihexahedral quartz in OiO 



Kamma Mountains 787 



north of Wagon Canon 584 



Pappoose Peak, Cortez Range 581 



Sheep Corral Canon 839 



Shoshone Peak 620 



