The rocks of the Magnesian layer overlay rocks of the Cambrian Period, the oldest sedimentary rocks that contain fossils.
escarpment | Niagara Escarpment | Great Escarpment | Great Escarpment, Southern Africa | Mau Escarpment | Escarpment | Caprock Escarpment | Bandiagara Escarpment | Pembina Escarpment | Niagara escarpment | Magnesian limestone | Côte d'Or (escarpment) |