30 DESCRIPTIVE GEOLOGY. 



strata found along the eastern slope of the mountains.- They extend along 

 the front of the range for nearly 65 miles, in a north and south line. 



The Palseozoic beds vary somewhat in thickness, but in their extreme 

 development were nowhere observed as over 1,000 feet. As already stated, 

 their average thickness may be taken at 850 feet. The following sections 

 made across the strata, beginning at the base of the series next the granite, 

 give a general idea of the Palseozoic rocks. 



At Table Mountain, between North Crow Creek and Lodge Pole Creek, 

 the section gave as follows: 



1. Pink and cream-colored limestone, alternating' 



with thin sandy beds 



2. Bluish limestone, highly siliceous y 650 feet. 



3. Thin bed of conglomerate 



4. Gray and bluish arenaceous limestone 



5. Red arenaceous limestone 60 feet. 



6. Reddish-white sandstone 50 feet. 



7. Campact fine gray sandstone, almost a quartzite, 



with some conglomerate 100 feet. 



850 feet. 

 At Granite Canon, just north of the Union Pacific Railroad, the follow- 

 ing section was obtained: 



1. Light gray limestone, with arenaceous beds. 



2. Massive blue limestone, 



3. Brilliant red arenaceous limestone. 



4. Compact reddish-gray sandstone, with fine pebbles. 



East of Signal Peak, 3 or 4 miles south of the railroad, the section gave: 



1. Blue limestone ^ 



2. Thin bed of fine conglomerate > 300 feet. 



3. Red arenaceous limestone J 



4. Bluish-gray Hmestone 4' feet. 



6. Red sandstone, with considerable variety in text- 

 ure, and calcareous near the top 100 feet. 



800 feet. 



