Question:
The volcanic origin deposits which are formed on the ocean floor at a depth of 3 km to 6 km in the Abyssal Plain region are known as
The volcanic origin deposits which are formed on the ocean floor at a depth of 3 km to 6 km in the Abyssal Plain region are known as
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Deep-sea sediments on the ocean floor are classified by their origin into calcareous oozes, siliceous oozes and inorganic clays.
Updated On: Jun 16, 2026
- Calcareous ooze
- Pelagiac deposits
- Radiolarian ooze
- Red clay
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The Correct Option is D
Solution and Explanation
Concept:
Deep-sea sediments on the ocean floor are classified by their origin into calcareous oozes, siliceous oozes and inorganic clays.
Step 1:
Calcareous and radiolarian oozes are biogenic, formed from the shells of tiny marine organisms. At very great depths these carbonate and silica shells dissolve and cannot accumulate.
Step 2:
In the deep abyssal plains at depths of about 3 km to 6 km, the dominant deposit is red clay, made largely of fine inorganic particles including volcanic and wind-blown dust that settle slowly. Hence the volcanic-origin deep abyssal deposit is red clay.
Answer: Option (4) — Red clay.
Deep-sea sediments on the ocean floor are classified by their origin into calcareous oozes, siliceous oozes and inorganic clays.
Step 1:
Calcareous and radiolarian oozes are biogenic, formed from the shells of tiny marine organisms. At very great depths these carbonate and silica shells dissolve and cannot accumulate.
Step 2:
In the deep abyssal plains at depths of about 3 km to 6 km, the dominant deposit is red clay, made largely of fine inorganic particles including volcanic and wind-blown dust that settle slowly. Hence the volcanic-origin deep abyssal deposit is red clay.
Answer: Option (4) — Red clay.
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