Submarine Lithification of Carbonate Sediments

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Science  26 Aug 1966:
Vol. 153, Issue 3739, pp. 994-997
DOI: 10.1126/science.153.3739.994


Recrystallized planktonic limestones from two guyots in the North Atlantic are in oxygen-isotopic equilibrium with their present ambient waters, suggesting submarine lithifica tion and recrystallization. The early stages of submarine lithification of carbonates may involve precipitation of, and replacement by, magnesium-rich calcite; with time this may invert to magnesium-poor calcite. This type of lithification probably requires very low rates of sediment accumulation.