high-constructive delta

A high-constructive delta is a landform created where a river meets a body of standing water, and the river's depositional processes dominate over marine forces. These deltas are characterized by a large supply of sediment relative to the energy of waves and currents that might disperse it.1

High-constructive deltas typically appear in two forms:
* Elongate: Exemplified by the bird-foot delta of the Mississippi River, these deltas extend outward with a more muddy composition.1
* Lobate: Seen in older Mississippi River deltas, these have a more rounded shape.1

These deltas form when a river's sediment delivery outpaces the ocean's ability to remove it, leading to the accumulation of sediment and the outward growth of the shoreline.123