392 DESOEIPTIVE GEOLOGY. 



and Jurassic beds pass under the nearly horizontal but slightly flexed beds 

 of the Vermillion Creek Eocene, which in a northwesterly direction sweep 

 round to the north and east of Morgan Peak. 



From the point where the Tertiary beds first cross Lost Creek, about 

 a mile above the village, their line of contact with the Cretaceous continues 

 up the Weber River parallel with the valley, gradually descending until, 

 about a mile below Echo City, the Tertiary beds form the entire bluffs 

 on the east side of the river. Between the first ravine from the east to the 

 north of Echo City and the mouth of Lost Creek, the lower foot-hills are 

 formed of Cretaceous strata, which appear on both sides of the river, being 

 overlaid at the height of from 400 to 600 feet by the nearly horizontal sand- 

 stones and conglomerates of the Vermillion Creek group. In the ravine 

 above mentioned, fossils, both of the Colorado and of the lower Fox Hill 

 horizons, were collected, in yellow sandstones dipping at about 25° southeast. 



