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Articles
Submarine Lithification of Carbonate Sediments
1 Institute of Marine Science, University of Miami, Miami, Florida 33149
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.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)