What do centers for sea floor spreading lack?

What do centers for sea floor spreading lack?

• A. Large marine organisms
• B. Volcanic activity
• C. Sediments at the ridge
• D. Ocean currents

Answer: (C)

Centers for sea floor spreading are characterized by the formation of new oceanic crust as tectonic plates pull apart, allowing magma to rise and solidify at the mid-ocean ridges. Because this process is continuous and occurs at a relatively rapid rate, sediments have not had much time to accumulate at these locations. The thin layer of sediment present at the ridge is often composed of only a few particles, mostly derived from the surrounding ocean rather than from extensive build-up over time. This contrasts with other areas of the ocean floor, where sediments can accumulate over millions of years, leading to thicker deposits. Therefore, the lack of significant sediments at the ridge is a defining feature of sea floor spreading centers.

Centers for sea floor spreading are characterized by the formation of new oceanic crust as tectonic plates pull apart, allowing magma to rise and solidify at the mid-ocean ridges. Because this process is continuous and occurs at a relatively rapid rate, sediments have not had much time to accumulate at these locations. The thin layer of sediment present at the ridge is often composed of only a few particles, mostly derived from the surrounding ocean rather than from extensive build-up over time. This contrasts with other areas of the ocean floor, where sediments can accumulate over millions of years, leading to thicker deposits. Therefore, the lack of significant sediments at the ridge is a defining feature of sea floor spreading centers.