CAMBRIAN CORDILLKRAN FORMATIOxXS WALCOTT J 



Thickness. — In Blacksmith Fork Canyon, 1,041 feet; in the sec- 

 tion west of Liberty, 814 feet. 



Organic Remains. — A few traces of Middle Cambrian fossils in 

 the lower part and numerous annelid borings throughout. 



Bloomington Formation 



Type Locality. — Bear River Range, about 6 miles west of the 

 town of Bloomington, Bear Lake County, Idaho. A second easily 

 accessible locality is in Blacksmith Fork Canyon, east of Hyrum, 

 'Cache County, Utah. 



Derivation. — From Bloomington Creek, which is near the type 

 locality, and passes through the formation. 



Character. — Bluish gray, more or less thin-bedded limestones 

 and argillaceous shales. Small rounded nodules of calcite occur 

 scattered irregularly through many of the layers of limestone. 



Thickness. — In Blacksmith Fork Canyon, 1,320 feet; in the sec- 

 tion west of Liberty, 1,162 feet. 



Organic Remains. — Abundant Middle Cambrian fossils. 



Blacksmith Formation 



Type Locality. — In Blacksmith Fork Canyon, about 8 miles 

 .above its mouth and 15 miles east of Hyrum, Cache County, Utah. 



Derivation. — From Blacksmith Fork, the type locality. 



Character. — Gray arenaceous limestone in massive layers. 



Thickness.— In Blacksmith Fork, 570 feet; in the section west of 

 Liberty, 23 feet. 



Organic Remains. — Large, irregular annelid borings. Middle 

 Cambrian age shown by position in section. 



Ute Formation 



Type Locality. — Slopes of Ute Peak, near the forks of East 

 Fork, east of Paradise, Cache County, Utah. This formation was 

 given the name L'^te limestone by the Fortieth Parallel Survey, but 

 aside from the fact that it was stated to overlie the Cambrian quartz- 

 ites and to be composed of 2,000 feet of Hmestones containing Cam- 

 brian fossils, it was not defined or limited. The beds here referred 

 to the Ute formation contain the fossils mentioned by the Fortieth 

 Parallel Survey as characterizing the lower portion of the L"^te lime- 

 stone. The formation is very easily accessible in Blacksmith Fork 

 Canyon. 



Derivation. — From L"^te Peak, the type locality. 



