of the Bear Rive? 1 Formation. 



99 



Associated with the sandstones there are shales and one or 

 more thin beds of coal. Following this ridge northward it is 

 soon seen to curve to the west and finally to the southwest so 

 that it is carried to Bear River City where it ends abruptly. 



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Scale. 





Fig. 1 . Sketch map of small area at Bear River City, Wyoming, showing the 

 location of the sections and the approximate clips and strikes of the more important 

 strata. 



a, «, a, ridges of Cretaceous coal-bearing sandstone, b, conglomerate ridge west 

 of the Jurassic outcrop. The figures give the amount and the arrows indicate 

 the direction of the observed dips. 



The sandstones composing it are there nearly vertical and form 

 the eastern part of Meek's section which will be quoted farther 

 on. The semicircular space thus enclosed is occupied by soft 

 clay shales with a few thin bands of sandstone, all of which 

 show the same curved strike with dips toward the center of 

 the curve. About 250 yards west of the first ridge at Bear 

 River City there is a second less prominent ridge of coal-bear- 

 ing sandstone that seems also to have a curved strike parallel 

 with the first. It is possible that these two ridges consist of 

 identical strata duplicated by a fault or fold, but positive proof 

 of this was not obtained. 



