444 DESCRIPTIVE GEOLOGY. 



of* the range, beyond Connor Peak, the beds of the Lower Coal-Measure 

 group are found to be pushed up and crumpled together in short, sharp 

 folds, giving, in an east and west section across the northern point, no less 

 than three small anticlinals, while the tendency of all the beds is to dip 

 steeply beneath the waters of the lake. 



East Canon is a deep, narrow gorge cut at right angles to the western 

 anticlinal, or quaquaversal, already mentioned. At Ophir City, a steep 

 wall of dark siliceous limestones rises perpendicularly on the south to a 

 height of 2,000 or 3,000 feet, while in the opposite direction, about an 

 eighth of a mile to the north of the canon-bottom, a sheer wall of quartz- 

 ite, from 300 to 400 feet in height, cuts off abruptly the tributary side- 

 canons from the north. Beyond and above this wall of quartzite is an 

 amphitheatre-like opening, shut in by a semicircular wall, rising in places 

 to a height of 2,000 feet, formed of outwardly-dipping beds of limestone. 

 The line of faulting, so distinctly shown by this quartzite wall, has a direc- 

 tion of about north 30° east, and discloses a thickness of about 400 feet of 

 compact reddish- White Cambrian quartzites. Above these are about *1 00 

 feet of greenish-yellow clay-slates, in which were found numerous Trilo- 

 hites and Primordial fossils, among which the following have been deter- 

 mined by Messrs. Hall and Whitfield: 



Ogyrj'ia produda. 

 Ogygla parabola. 

 Ogygia^ new sp. 

 Lingulepis, new sp. 

 Kutorgina, new sp. 

 BikeUocepJialus, sp.? -' 



DiJcelloceplialus, sp. 1 



From their stratigraphical position, and their correspondence both 

 in their horizon and fauna, with those found in the Wahsatch Mountains 

 at City Creek, these beds evidently belong to the Potsdam group, although 

 some of the above fossils have been assigned to the Quebec group by 

 Messrs. Hall and Whitfield, In the limestones immediately above them, 

 no fossils have, as yet, been found. But beyond the ridge to the 



