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Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass. Wind, ice, water, and gravity transport previously weathered surface material, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment.
A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. [1] Stacks are formed over time by wind and water, processes of coastal geomorphology. [2] They are formed when part of a headland is eroded by hydraulic action, which is the force of ...
River delta – Silt deposition landform at the mouth of a river; Salt marsh – Coastal ecosystem between land and open saltwater that is regularly flooded; Sea cave – Cave formed by the wave action of the sea and located along present or former coastlines
Ripple cross-laminae forms when deposition takes place during migration of current or wave ripples. A series of cross-laminae are produced by superimposing migrating ripples. The ripples form lateral to one another, such that the crests of vertically succeeding laminae are out of phase and appear to be advancing upslope.
Deltas are typically classified according to the main control on deposition, which is a combination of river, wave, and tidal processes, [18] [19] depending on the strength of each. [20] The other two factors that play a major role are landscape position and the grain size distribution of the source sediment entering the delta from the river.
A spit may be considered a special form of a shoal. As spits grow, the water behind them is sheltered from wind and waves, and a salt marsh is likely to develop. Dungeness Spit in the Strait of Juan de Fuca, on the U.S. Pacific coast. Wave refraction can occur at the end of a spit, carrying sediment around the end to form a hook or recurved ...
Wave-cut platform – Narrow flat area created by erosion; Longshore drift – Sediment moved by the longshore current Deposition (sediment) – Geological process in which sediments are added to a landform or landmass; Coastal sediment supply – Transport of sediment to the beach environment; Sand dune stabilization – Coastal management ...
A marine terrace represents the former shoreline of a sea or ocean. It can be formed by marine abrasion or erosion of materials comprising the shoreline (marine-cut terraces or wave-cut platforms); the accumulations of sediments in the shallow-water to slightly emerged coastal environments (marine-built terraces or raised beach); or the bioconstruction by coral reefs and accumulation of reef ...