Description:Bedded siltstone and finer-grained miudstone were deposited as silt and mud on the deep-sea floor. The paler coarser beds were deposited by currents that locally formed ripples on the sea-floor. The darker , finer-grained mud settled quietly from the water. The layers were originally horizontal but have been tilted by tectonic movements.
Representing:Mesozoic sedimentary rock of Western Canada Sedimentary Basin, deposited in the Triassic Period, about 180 million year
Original location:Kamenka Quarry near Canmore, Alberta