The process or act of forming a delta through the deposition of sediment where a river meets a larger body of water.
From 'delta' combined with the suffix '-ation' (indicating a process or action). A technical term used in geology and earth science during the 20th century.
Deltation is still happening right now—the Mississippi Delta grows and shrinks daily as sediment is deposited and eroded, and it's one of the few places where humans can actually watch land being born and destroyed in real time.
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