Biogenic sediment is one of three major components of deep sea sediments, the other two being authigenic and detrital. Biogenic sediment consists mainly of calcite and opal produced as the hard parts of organisms and eventually precipitated.
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Calcite is formed by coccoliths (plants) and foraminifera (animals) and opal by diatoms (plants) and radiolarians (animals). After long term residence on the sea floor, biogenic sediments are usually transformed by pressure of the overlying ocean into limestone.
- Physical Oceanography Index
- W. S. Broecker and T.-H. Peng. Tracers in the Sea. Lamont-Doherty Geological Observatory, Palisades, N.Y., 1982.