chilhowee group造句

例句与造句

1. Clastic rocks of the Chilhowee Group are of early Cambrian age ( 542 520 million years old ).
2. Geologically, the foothills largely consist of Cambrian Class III rocks of the Paleozoic period, a type known specifically as the Chilhowee Group.
3. Chilhowee Group rocks, which are mostly sandstones, siltstones, and shales, range in age from about 300 million to 500 million years old.
4. It's difficult to find chilhowee group in a sentence. 用chilhowee group造句挺难的