radiolarian ooze

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Deep-sea ooze in which at least 30% of the sediment consists of the siliceous radiolarian (Radiolaria) tests. Radiolarian-rich oozes occur in the equatorial regions of the Pacific and Indian Oceans where the depth exceeds the carbonate-compensation depth (around 4500 m in the central Pacific). See also diatom ooze.

Subjects: Ecology and Conservation — Earth Sciences and Geography.

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