Depositional Coastal Landforms or Features
Spits are ridges of sand projected from land into the bay (Figure 12.23).
A bay-mouth bar is a sandbar that stretches across a bay, separating it from the ocean (Figure 12.24).
Barrier islands are ridges of sand islands that run parallel to the coast (Figure 12.25). In locations where inlets occur cutting across bay-mouth bars or barrier islands, tidal deltas can accumulate sediments on both ends of an inlet. Ebb tidal deltas form as the outgoing tidal current erode and move and deposit sand on the seaward side of an inlet. Flood-tide deltas form where incoming tidal currents carry sediments eroded from the ocean-beach side of a barrier-island inlet and deposit them in the lagoon or bay side of an inlet.