Sediment deriving primarily from land erosion and river transport is known as?

Sediment deriving primarily from land erosion and river transport is known as?

• A. Terrigenous Sediment
• B. Silt
• C. Siliceous Ooze
• D. Active Sonar

Answer: (A)

Terrigenous sediment refers to material that originates on land and reaches the ocean through weathering and erosion, with rivers and runoff carrying rocks and minerals to marine areas. The phrase “sediment deriving primarily from land erosion and river transport” matches this origin: the stuff comes from the continents and is delivered to the sea by rivers, eventually settling on the seafloor. Why the other terms don’t fit as the primary origin: silt is a grain-size category (fine particles) and can be terrigenous, but it describes size, not origin. Siliceous ooze is a biogenous sediment formed from the silica shells of microscopic organisms like diatoms and radiolarians, not from land-derived material. Active sonar is unrelated to sediment type.

Terrigenous sediment refers to material that originates on land and reaches the ocean through weathering and erosion, with rivers and runoff carrying rocks and minerals to marine areas. The phrase “sediment deriving primarily from land erosion and river transport” matches this origin: the stuff comes from the continents and is delivered to the sea by rivers, eventually settling on the seafloor.

Why the other terms don’t fit as the primary origin: silt is a grain-size category (fine particles) and can be terrigenous, but it describes size, not origin. Siliceous ooze is a biogenous sediment formed from the silica shells of microscopic organisms like diatoms and radiolarians, not from land-derived material. Active sonar is unrelated to sediment type.