[Answer] What is calcareous ooze?

Answer: a fine-grained deep ocean sediment containing the skeletal remains of calcite-secreting microbes

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What is calcareous ooze? Calcareous globigerina ooze occurs in the shallower parts of the South Pacific the dissolving power of the seawater at great depths being sufficient to dissolve calcareous material to such an extent that these oozes are not generally found at depths in excess of about 15 000… Calcareous ooze is the general term for layers of muddy calcium carbonate (CaCO 3) bearing soft rock sediment on the seafloor . Of all the distinct types of veneers covering the Earth's crust — be it soil sediment snow or ice — none are more widespread than red-clay and calcareous ooze. Only a small proportion of calcareous ooze is precipitated inorganically. The term calcareous can be applied to a sediment sedimentary rock or soil type which is formed from or contains a high proportion of calcium carbonate in the form of calcite or aragonite. Calcareous sedimentsare usually deposited in shallow water near land since the carbonate is precipitated by marine organisms that need land-derived...

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