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Which one of the following are the most widespread inorganic pelagic d

June 1, 2025 by rawan239

Which one of the following are the most widespread inorganic pelagic deposits on the ocean floor?

Red clay

Radiolarian ooze

Volcanic dust

Calcareous ooze

This question was previously asked in

UPSC CISF-AC-EXE – 2017

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Red clay is the most widespread inorganic pelagic deposit on the ocean floor.

Pelagic deposits are deep-sea sediments. Red clay is composed of fine-grained detrital material, volcanic ash, and cosmic dust, accumulating slowly in areas away from continental margins and where biogenic sedimentation is low, typically in the deepest ocean basins.

Radiolarian ooze and calcareous ooze are examples of biogenic pelagic deposits, formed from the remains of marine organisms. Volcanic dust can contribute to red clay but is not the deposit itself.

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