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Encyclopedia > Deposition (sediment)

Deposition, also known as sedimentation, is the geological process where by material is added to a landform. This is the process by which wind, water or ice create a sediment deposit, through the laying down of granular material that has been eroded and transported from another geographical location. Wikipedia does not have an article with this exact name. ... Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of water or other liquid. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... A landform comprises a geomorphological unit. ... Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of water or other liquid. ... Severe soil erosion in a wheat field near Washington State University, USA. For erosion as understood by materials science, see Erosion (materials science) For erosion as an English analogy, see Erosion (figurative) Erosion is the displacement of solids (soil, mud, rock and other particles) by the agents of wind, water...


Deposition occurs when the forces responsible for sediment transportation are no longer sufficient to overcome the forces of particle weight and friction, which resist motion. Deposition can also refer to the build up of a sediment from organically derived matter or chemical processes. For example, chalk is made up partly of the microscopic calcium carbonate skeletons of marine plankton, the deposition of which has induced chemical processes (diagenesis) to deposit further calcium carbonate. The Needles, part of the extensive Southern England Chalk Formation. ... Calcium carbonate is a chemical compound, with chemical formula CaCO3. ... Photomontage of plankton organisms Plankton are defined as any drifting organism that inhabits the water column of oceans, seas, and bodies of fresh water. ... In geology, diagenesis refers to all the chemical, physical, and biological changes undergone by a sediment after its initial deposition and during and after its lithification, exclusive of surface alteration (weathering). ...


 
 

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