Thickness.—In Blacksmith Fork Canyon, 1,041 feet; in the section 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 section 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 Ute limestone by the Fortieth Parallel Survey, but aside from the fact that it was stated to overlie the Cambrian quartzites and to be composed of 2,000 feet of limestones containing Cambrian 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 Ute limestone. The formation is very easily accessible in Blacksmith Fork Canyon.
Derivation.—From Ute Peak, the type locality.
