Sediments eroding from the rising Rocky Mountains to the west washed into the sea and deposited as layered wedges of fine debris.
(Sediments; eroding; from the rising Rocky Mountains to the west) (Sediments eroding from the rising Rocky Mountains to the west; washed; into the sea) (Sediments eroding from the rising Rocky Mountains to the west; deposited; as layered wedges of fine debris)
Sediments Sediments eroding from the rising Rocky Mountains to the west Sediments eroding from the rising Rocky Mountains to the west
eroding washed deposited
from the rising Rocky Mountains to the west
into the sea
as layered wedges of fine debris