Fluvial terrace
Erosional terrace is a terrace that the tread has been formed primarily by lateral erosion. During low water level stage, fine sediment is deposited and during normal flow, coarse sediment is deposited at the end of a high water event. When the river reaches its highest level, it entrains all the channel sediment and scours the underlying bedrock before coarse detritus is deposited again on the channel floor.