PEALE.J 



GEOLOGY — CATALOGUE OF EOCKS. 



Catalogue of rocks collected, ^c— Continued. 



271 



Name. 



Eed sandstone, (SOurian ?) 



Pink limestone, (Silurian ?) 



TeOow limestone, (Carbom£erous ?) , 



White arenaceous limestone, (Carboniferous ?) 



Pink quartzite 



Yellow quartzitic sandstone 



Brown quartzitic sandstone 



Ked sandstone 



White quartzite, (Cretaceous No. 1) 



Gneiss 



Granite (?) 



do , 



Metamorphosed slate 



Quartzite 



Gneiss, (Micaceous) 



Trachyte (?) 



Gray sandstone 



Green slate 



Quartzitic sandstone 



Trachyte (?) 



Coarse micaceous sandstone 



Blue limestone 



Sandstone 



Eed calcareous sandstone shale 



Quartzitic sandstone 



White quartzite, (Silurian) , 



Purple sandstone, (Silurian) 



Green clay shale 



Blue-gray' limestone , 



Trachyte (?) 



White micaceous sandstone 



Blue limestone 



Micaceous sandstone shale — 



White sandstone, (Cretaceous) 



Andesite (?) 



Ehyolite(?) 



Dark quartzite 



Micaceous sandstone 



Shaly sandstone .*■- 



Quartzite 



Limestone '. 



Trachyte (?) 



Conglomerate 



Limestone o 



Quartzite 



Limestone , 



Black argillaceous shale, (Cretaceous) 



Eed and white shaly sandstone 



Blue limestone 



Mottled sandstone 



Coarse red sandstone 



White micaceous sandstone 



White quartzite 



do 



Trachyte (?) ■ 



do 



do 



Magnesian limestone 



Sandstone 



EhyoUte (?) 



Sandstone 



Sandstone shale 



Sand8*;one 



Micaceous sandstone shale , 



Trachyte (?) 



do 



do 



Quartzite, (Potsdam) 



Trachyte 



Gneiss , 



Granite 



Quartzite, (Potsdam) 



(xueiss 



Trachyte (?) 



do 



do 



do 



do 



Pitchstone 



Trachyte 



Granite 



do 



Locality. 



West side of Trout Creek, below Bergen Park. 



Do. 



Do. 



Do. 

 One mile east of Trout Creek. 



Do. 



Do. 



Do. 

 Sulphur Springs, South Park. 

 East side of Tarryall Creek. 

 North of Hamilton. 

 Mount Guyot. 

 East of Mount Guyot. 



Do. 



Do. 

 Silver Heels Mountain. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 South side of Four-Mile Creek. 



Do. 



Bo. 



Do. 

 Three miles above Hamilton. 

 East of Fair Play. 



Do. 



Do. 



Do. 



Do. 

 Mount Lincoln. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Eidge northeast of Mount Lincoln. 

 "Do. 



Do. 

 South Platte Eiver, below Hoosier Pass. 



Do. 

 East of Fair Play. 



Do. 



Do. 



Do. 



Do. 

 North of Fair Play. 

 Mosquito Gulch. 

 Buckskin Gulch. 



Do. 

 Iowa Gulch. 

 South side of Four-Mile Creek. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Head of Iowa Gulch. 

 Stray Horse Gulch. 

 Near Fair Play. 

 Horseshoe Mountain. 

 South side of Four- Mile Creek. 

 Horseshoe Mountain. 



Do. 



Do. 

 Weston's Pass. 

 Buflalo Peakb. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Mount Harv.ard. 

 East of La Plata Mountain. 



