386 DESCRIPTIVE GEOLOGY. 



of strata, dipping- eastward toward the upper part as steeply as 50°, and in 

 some instances reaching nearly the vertical. These steep dips are, however, 

 extremely local, and are flanked to the east and west by the normal dip of 

 35° or 40°. From the upper 1,000 feet of these limestones, the following 

 Coal-Measure fossils were obtained: 



1. Spirifer opimus. 



2. Athyris suhtilita. 



3. Terebratula hovidens. 



4. Produdus Prattenianus. 



5. Aidopora, sp. ? 



Of these, Nos. 1 and 2 were from a gray granular limestone, about 300 

 feet down from the top, under which are dark beds, which frequently emit 

 a very fetid odor on being struck by the hammer, and are intercalated with 

 beds of yellow and impure arenaceous limestones. Nos. 2 and 3 are found 

 also at about 500 feet from the top, and Nos. 3, 4, and 5 again at 300 feet 

 below these. At 1,000 feet from the top comes in a series of thinly-bedded 

 and heavily-blocked quartzites, which contain some sheets of small pebbles: 

 these are, however, rather thin and localized. This quartzite, or, as it may 

 more properly be called, indurated sandstone, occupies a belt of 150 feet. 

 In general, the upper 1,000 or 1,500 feet of the series are made up of rather 

 thinly-bedded and less pure rocks than the strata below, corresponding thus 

 to the intercalated belt described in the southern part of the range. From 

 the quartzite down to the Station are 3,500 to 4,000 feet of underlying and 

 conformable limestones, varying constantly in purity and crystalline texture. 

 Their color is generally very dark, and the beds heavy. 



The fossils found in the strata to the east of the "Weber Station and 

 directly overlying the lime-kiln seem to represent that part of the section 

 observed in Ogden Canon, just over the Waverly, though no fossils of a 

 horizon lower than Coal-Measures were found here. It is interesting to 

 observe that the distortions of dip occur among the arenaceous beds near 

 the top, in a position nearly corresponding to the Z-contortion in Ogden 

 Caiion. It would seem that there must be something in the physical con- 

 dition of these rocks, which renders it difficult for them to be compressed 



