of the Bear River Formation. 



Ill 



The section here crosses Smith's Fork at the bend and the 

 strata are concealed in the level river valley for a quarter of a 

 mile. Then there are exposures of brown conglomerate and 

 sandstone dipping about 50° east that are evidently the equiva- 

 lents of the lower beds in No. 4. Still farther west along the 



® north side of Pine 

 Creek there are char- 

 acteristic exposures of 

 the bluish and varie- 

 gated Bear River 

 shales, beyond which 

 all the strata are cov- 

 ered for a mile or more 

 to the range of hills 

 that here forms the 

 boundary between the 

 Bear River and Green 

 River drainage areas. 

 The beds on the west- 

 ern flank of this range 

 are the gray and blue 

 calcareous shales that 

 Dr. Peale referred to 

 the J urassic " Penta- 

 crinus Beds." 



The structure indi- 

 cated by the dotted 

 lines in the figure 

 (Section 3) was seen in 

 the continuation of this 

 belt both north and 

 south of the line of 

 the section. 



About twelve miles 



north of Cokeville a 



small stream, not 



named on the maps, 



cuts a deep gorge 



through the plateau on 



the east side of Smith's 



Fork and shows the 



general character of 



the underlying beds. 



The strike of the strata 



-£ is generally very con- 



a.-g stant in this region, 



nearly parallel with the 



^^ course of the river. 



° This section therefore 



ry./rTj-swnug-K 



