CSIR NET Dec 2015 Q141: Marine Geology
Dominance of siliceous over calcareous sediments on the deep ocean floor: differential dissolution with depth
Although calcium carbonate (CaCO3) production by calcareous plankton (foraminifera, coccolithophores) generally exceeds silica production by siliceous plankton (diatoms, radiolarians) at the ocean surface in most...
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