180 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Catalogue of rocks collected in 1873 iy A. C. Peale, cfc. — Continued. 



Name, &c. 



Locality. 



Porpbyritic trachyte, from dike in sandstones 



do 



Porpbyritic tracbyte 



do 



Brown trachyte ? from breccia 



do 



Dark greenish tracbyte ? from breccia 



Light reddish tnfa from breccia 



Black trachyte ? from breccia 



Greenish trachyte ? from breccia 



Black trachyte ? from breccia 



Dark gray trachyte from breccia. 



Light gray bornblendic trachyte from breccia. 



Greenish laminated trachyte from breccia 



Ashy-gray tufa from breccia 



Trachyte? (dike No. 1 in Cretaceous rocks) ... 



Sandstone conglomerate 



Trachyte (dike No. 2 in Cretaceous rocks) 



Trachyte (dike No. 3 in Cretaceous rocks) 



Tracbyte (dike No. 4 in Cretaceous rocks) 



Porpbyritic trachyte (dike in Cretaceous sand- 

 stones above coal-bed). 



Porpbyritic trachyte ? 



Trachyte 



-do 



Trachyte (dike in Cretaceous rocks) . 



Sandstone (above dike) 



Porpbyritic trachyte 



do 



, do 



Trachyte (dike) 



Sandstone (above dike) 

 Ked basalt? , 



Black basalt?. 

 do 



Black basalt 



Argillaceous shale ... 



Black basalt 



Purplish basalt 



Black basalt 



Amygdaloidal basalt . 



do 



Red vesicular basalt.. 



Tufa 



Black basalt 



-do 



Argillaceous shale (calcar60u.s Cretaceous) . 



Whitish trachyte , 



Purplish trachyte 



Porpbyritic obsidian, with spherules . 

 White tufa 



Gray trachyte 



Porpbyritic obsidian 



Purple vesicular rhyolite, with hyolite and 

 chalcedony in the cavities. 



Light trachyte 



Purple trachyte 



Purple rhyolite 



Tufaceous trachyte (in breccia) . 



Trachyte in breccia , 



Trachyte, greenish, in breccia 



Anthracite Creek, near Mount Marcellina. 



Do. 

 Mount Marcellina. 



Do. 

 West Pork of Ohio Creek. 



Do. 



Do. 



Do. 



Do. 

 Station No. 31, near the head of West Fork of 

 Ohio Creek. 



Do. 

 Head of West Fork of Ohio Creek, below sta- 

 tion 31. 



Do. 



Do. 



Do. 

 Ridge southeast of Station No. 32, between head 

 of branches of Slate River and Ohio and An- 

 thracite Creeks. 



Do. 



Do. 



Do. 



Do. 

 Small southern branch of Antliracite Creek, near 



the head of the creek. 

 Station 30, head of Ohio Creek. 

 Station 33, between tbe North Fork of the Gun- 

 nison and Rock Creek. 

 Ridge below station No. 34, west of Coal Ci'eek. 

 Coal Creek, near camp 36. 



Do. 

 Summit of station 38, east of Smith's Fork of the 



Gunnison. 

 Slope of station 38. 

 Station 39, east of station 3ri. 

 North side of Smith'sFork, near foot of station 38. 



Do. 

 Station 40, north of the North Fork of the Gun- 

 nison. 



Do. 

 Station 42, between North Fork of Gunnison and 



branches of Grand River. 

 Station 45, northwest of station 42. 

 Ridge leading to station 47. 

 Summit of station 48, south of Grand River. 

 Slope of station 48, south of Grand River. 

 Base of station 48, south of Grand River. 



Do. 



Do. 



Do. 



Do. 

 Top of mesa, near station 54, south of Grand 



River, north end. 

 Top of mesa, near station 59, south end, east of 



(junnison River, 

 Bluff' on Gunnison River, below station 60. 

 Station 71, on Gunnison River. 

 West of station 71, on north side of Gunnison 

 River. 



Do. 

 Above station 73, on north side of Gunnison 

 River. 



Do. 



Do. 



Do. 



Do. 



Station.77, on north side of the Gunnison, near 

 the Grand Canon. 

 Do. 

 Station 79, on south fork of Smith's Fork of the 

 Gunnison. 

 Do. 

 Do. 



