186 GEOLOGICAL SURVEY OF • THE TERRITOEIES. 



Catalogue of rocks collected, 4'C. — Continued. 



32t 



32-2 

 323 

 324 

 325 

 326 

 327 

 328 

 329 

 330 

 331 

 332 



Blue slaty limestone, (Silurian) 



Green chloritic slates, (Silurian) 



Purple calcareous sandstone 



Glauconitic sandstone, (calcareous) 



Purplish sandstone 



Pink quartzite .• 



Steel-gray quartzite 



Eed sandstone 



Micaceous sandstone, (fine-grained) 



Micaceous sandstone, (pebbly) 



Blue argillaceous slate, (calcareous) 



Brownish argillaceous slate, (calcareous) 

 Trap-rock, (dike in Jurassic) 



Near Gallatin River, above Gallatin 

 City, Montana. 

 i)o. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



EocTcs collected by the Snahe Biver division of the expedition, Professor F, H. Bradley and 



W. B. Taggart. 



No. 



Name. 



Locality. 



1 



2 



3-9 



10 



11 



12-14 



15-17 

 18 



19-20 



21-22 

 23 

 24 



25-26 

 27 

 28 

 29 

 30 

 31 

 32 



33-35 

 36 



37-38 

 39 



40 



43-44 

 45-46 



47-48 

 49 



50-51 



52-64 

 65 

 66 

 67 



68-69 

 - 70 



71-77 



78 

 79 

 80-81 

 82 

 83 



Hematite 



Oolitic limestone, (Tertiary) 



FossiliferouB limestone, (Quebec group) . . 



Gray limestone, (Tertiary) 



Gray trachyte 



Cellular trachyte 



Basalt ". 



Rose-colored trachytic tufa 



Basalt 



Trachytic tufa 



Trachyte-porphyry 



Serpentine 



Conglomerate-limestone, (Quebec group). 



Limestone, (Niagara group) 



Glauconitic sandstone 



Trap-rock 



Slaty trachyte 



Granular trachyte 



Trachytic tufa 



Basalt 



Micaceous quartzite, (Potsdam) 



Sanidine trachyte 



Hot-spring deposit, (calcareous) -. 



Volcanic sandstone 



Volcanic sandstone, compact, metamorphosed . 



Volcanic sandstone, conglomerate 



Brown porphyritic obsidian 



Volcanic sandstone 

 Sanidine trachyte . 



Trachyte 



Tufaceous geyserite 



Tufaceous sandstone 



Compact geyserite 



Trachyte 



Trachyte-porphyry 



Compact sandstone, (Tertiary) . 

 RhyoUtic 



White volcanic sandstone 



Porphyritic ob.sidian, (black) . 



Spherulitic obsidian 



Rhyolitic 



Gray trachyte 



Brown trachyte. 

 Trachyte 



Red trachyte . . . 

 Cellular trachyte 



Near Brigham City, Utah. 

 Bear River Biidge, Utah. 

 Malade City, Utah. 



Do. 

 Near Fort Hall, Idaho. 

 Sand Hill Mountain, Idaho. 

 Falls River, Idaho. 



Do. 

 Pierre's River, Idaho. 



Do. 



Do. 



Do. _ 

 T6ton Canon, Idaho. 

 T6ton Creek, Idaho. 

 Teton Mountains, Idaho. 



Do. 

 Bechler's River, Idaho. 



Do. 

 Crater near Henry's Lake, Idaho. 

 SawteUe's Peak, Idaho. 

 Tyghee Pass, Idaho. 

 Upper Madison Canon, Montana. 

 Gibbon's Fork of Madison River, 



Montana. 

 Lower geyser-basin, Yellowstone 



National Park. 

 Shoshone Lake, Yellowstone Na- 

 tional Park. 



Do. 

 Near Shoshone Lake, Yellowstone 

 National Park. 



Do. 

 Two miles south of Shoshone Lake, 



Yellowstone National Park. 

 Lewis's Lake, "Wyoming. 



Do. 



Do. 



Do. 

 Mt. Sheridan. 



Do. 

 Hunter's River, Wyoming. 

 East side caiion of Union River, 

 Wyoming. 



'Do. 



Do. 



Do. 



Do. 

 West side canon of Union River, 

 Wyoming. 



Do. 

 Ridge west of Coulter's Creek, 

 Wyoming. 



'Do. 



Do. 



