Which sediment type is classified as lithogenous pelagic deposits?Question 20Answercoquinaturbiditesred claymicritesiliceous ooze

1. Break Down the Problem

We need to identify which of the sediment types listed corresponds to lithogenous pelagic deposits.

2. Relevant Concepts

• Lithogenous Sediments: These sediments are derived from the erosion of rocks and minerals on land.
• Pelagic Deposits: These refer to sediments found in the open ocean, typically settling from the water column.

3. Analysis and Detail

Let's analyze the options provided:

1. Coquina: A type of limestone made predominantly of shell fragments. This is biogenic, not lithogenous.
2. Turbidites: These sediments are associated with underwater landslides or turbidity currents. They often contain a mixture of origin types, typically terrigenous (lithogenous) but not strictly classified as lithogenous pelagic deposits.
3. Red Clay: This is an example of lithogenous sediment found in the deep ocean basins and can be classified as a pelagic deposit due to its fine particle size and origin.
4. Micrite: A fine limestone formed from the compaction of carbonate mud. This is also biogenic rather than lithogenous.
5. Siliceous Ooze: A biogenic sediment predominantly made of silica from diatoms and radiolarians.

4. Verify and Summarize

Upon reviewing these definitions and classifications, the sediment type that fits most accurately as a lithogenous pelagic deposit is red clay.

Final Answer

Red Clay is classified as a lithogenous pelagic deposit.