Members
In the Bighorn Basin region along the Montana - Wyoming border, the Cloverly is divided into several members.
- Pryor Conglomerate lies at the base and contains abundant black chert. It is named from thick beds exposed on the west side of the Pryor Mountains.
- The Little Sheep Member lies in the middle and is composed of pale-purple, gray to almost white, bentonitic mudstone. A radiometric date of 115 +/- 10 MA has been obtained from low in the member (Chen and Lubin 1997), and other near the top at 108.5 +/- 0.2 MA (Burton et al. 2006). These dates confirm that the Cloverly is Aptian-Albian in age.
- The uppermost member is the Himes Member contains some coarse grained channel deposits, but is primarily brightly, multicolored (variegated) mudstones.
Read more about this topic: Cloverly Formation
Famous quotes containing the word members:
“Safe in their Alabaster Chambers—
Untouched by Morning
And untouched by Noon—
Sleep the meek members of the Resurrection—”
—Emily Dickinson (1830–1886)
“I esteem it the happiness of this country that its settlers, whilst they were exploring their granted and natural rights and determining the power of the magistrate, were united by personal affection. Members of a church before whose searching covenant all rank was abolished, they stood in awe of each other, as religious men.”
—Ralph Waldo Emerson (1803–1882)
“A multitude of little superfluous precautions engender here a population of deputies and sub-officials, each of whom acquits himself with an air of importance and a rigorous precision, which seemed to say, though everything is done with much silence, “Make way, I am one of the members of the grand machine of state.””
—Marquis De Custine (1790–1857)