GEOLOGICAL SURVEY OF THE TEEEITOEIES. 



201 



Sulphur. At White Hot Springs on Gardiner's Eiver ; at Tower 

 Creek, in a ravine near hot springs ; at foot of Mount Washburne ; 

 at- Crater Hills in beautiful crystals lining the crust or deposit ;. on 

 the East Fork of Madison Eiver in old, extinct, hot-spring basins 5 at 

 Turbid Lake near hot springs ; near Evanston, Utah Territory. 



Tufa, (calcareous.) At Soda Springs, on Bear Eiver, Utah Territory, 

 in huge masses, retaining perfectly the shape of the plants incrustedj 

 in Beaver Head CaQon, Jefferson County, Montana. 



CATALOGUE OF EOCKS. 



There were 627 specimeus, including duplicates, collected during the summer, com- 

 mencing at Ogden and ending at Fort Bridger. 



ISTame. 



Locality. 



Dark-red ferruginous sandstone 



Reddish syenite 



Metamorphic siliceous conglomerate 



Protogine 



White quartzite 



Light-gray cherty limestone 



Dark-hluish cherty limestone 



Siliceous clay-slate . , 



Dark-blue mountain limestone 



Oolitic limestone 



Gray siliceous limestone 



Greenstone 



Amygdaloidal melaphyre 



Greenstone 



Chlorite schist i - - 



Dark-rod quartzite 



ferruginous quartzite - 



White sandstone, (Pliocene) - . . 



White sandstone, (Pliocene, dendritic) . . 



Light-brown quartzite — 



White limestone 



Siliceous mica schist. . . -• 



Purple quartz sandstone 



Coarse-grained ferruginous sandstone. . . 



Dark-blue limestone 



Ferruginous siliceous slate 



Ked quartzite 



Dark-gray quartz schist 



Arkose, or feldspathic sandstone 



White quartzite 



Quartz porphyry 



Greenstone 



Chlorite schist - 



Greenish-gray quartz schist 



White quartz schist 



Eed quartzite 



White friable sandstone, (Tertiary) ■. 



Vesicular basalt 



Compact basalt 



Fine-grained red sandstone 



Jurassic limestone, (gray) 



Slate-colored trachyte 



Ked quartzite, (highly inetamorphosed) . 



Vesicular basalt 



Compact basalt, (with white crust) 



Lava 



Slaty porphyritic phonoUte 



Conipact porphyritic phonolite 



White cavernous trachyte 



Pink sandstone 



Wliite quartzite 



Pink and white sandstone 



White sandstone 



Ked sandstone 



Light-brown limestone 



Bluish-gray sandstone, (Pliocene) 



Gray dendritic sandstone, (Pliocene) . 

 Bluish-white sandstone, (Pliocene) . . . 



Old hot spring deposit 



White argillaceous sandstone 



Yellow argillaceoua sandstone 



Granite 



Ogden Canon, Ogden, Utah Territory. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Dry Lake Valley, Utah Temtory. 

 Cache Valley, Utah Territory. 



Do. 

 Bear Kiyer, Utah Territory. 

 Near Clifton. 



Do. 

 Between Clifton and Oxford. 

 Above Oxford. 

 Ked Eock Pass. 

 Marsh Creek Valley, Idaho Territory. 



Do. 

 Port Neuf Canon, Idaho Territory. 



Do. 



Do. 



Do. 



Do, 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Port Neuf Kiver, Idaho Territory. 



Do. 

 Near Fort Hall, Idaho Territory. 



Do. 

 Eagle Rock, Snake Kiver, Idaho Territory. 



Do. 



Do. 



Do. 

 Cave at Hole in the Eock, Idaho Territory. 

 Mouth of Beaver Head Canon, Idaho Ter. 

 Pleasant Valley, Idaho Territory. 

 Near the Divide of Rocky Mountains, Idaho 



Territory. 

 Mount Garfield, Montana Territory. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Little Sage Creek Valley, Montana Temtory. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Wild Cat Cauon, Montana Territory. 



