GEOLOGY Materials eroded from the early Rocky Mountains were deposited over earlier layers here and cemented into sandstones.
(GEOLOGY Materials; eroded; from the early Rocky Mountains) (GEOLOGY Materials eroded from the early Rocky Mountains; were deposited; over earlier layers here) (GEOLOGY Materials eroded from the early Rocky Mountains; cemented; )
GEOLOGY Materials GEOLOGY Materials eroded from the early Rocky Mountains GEOLOGY Materials eroded from the early Rocky Mountains
eroded were deposited cemented
from the early Rocky Mountains
over earlier layers here