JUKASSIC FOSSILS. 163 



One hundred and thirty-five feet above the same datum there is another 

 horizon, distin<ruislied in tlie northern part of tlio Hills by its lunncrous 

 fossils, and in the following- section, made by Mr. Patrick, one or two miles 

 west of the last section and immediately north of the forks of the Red- 

 water, its position in relation to the underlying strata is well sIkjwu: 



Jura. 



Feet. 



0. Sandstone, white ; sutmnit of tlic hill 60 



5. Sandstone, pinkish white 25 



4. Sandstone, yellow and white, interstratified with sandy shales ; a layer near 



the toj) 1^ inches thick (135 feet above the Eed Beds) was found to be 

 highly fossiliferous 25 



3. Sandstone, white, but reddish in places 50 



2. Clay, or clay shales, greenish (JO 



Red Beds. 



1. Gypsum and red clays to valley — 



The same horizon (4) Avas found to carry many fossils in the exposures 

 near Crow Peak. 



The following section was observed by Mr. Jenney in a butte which 

 stands in the Red Valley tvv^o or three miles south of the forks of the Red- 

 water : 



Jura. 



Feet. 



6. Sandstone, massive, ot a yellowish brown color 5 



5. Shales or clays, argillaceous and silicious 30 



4. Conglomerate; ])ebbles cemented by lime; containing a few fragments of 



moUuscan fossils 3 



3. Shales, soft and sandy, with some fossils 2 



2. Clay, gray \ 20 



Red Beds. 

 1. Red clays — 



Southwest of Sun Dance Hills and west of Inyan Kara there is an 

 inclining plateau cut into parallel ridges which run northwest and south- 

 east, parallel with the course of Inj^an Kara Creek. These were not 

 examined critically, but many of them are capped with the Cretaceous 

 sandstone, below wliich are the Jurassic strata, while others consist almost 

 entirely of the Jurassic. They are a direct continuation of the foothills on 

 the Beaver, but here, owing to the low angle of dip, they spread out and 



