The dust falls from the atmosphere over the ocean, sinks through the water column and ends up as sediments on the ocean floor.
Seamounts are isolated volcanic mountains scatteredacross the ocean floor
The dust falls from the atmosphere over the ocean, sinks through the water column and ends up as sediments on the ocean floor.
An ocean trench does not become a volcanic island, however volcanic islands often form near ocean trenches.
Volcanic eruptions on the ocean floor can create underwater mountains, known as seamounts. These eruptions also release gases and minerals, which can support unique ecosystems around hydrothermal vents. Additionally, volcanic activity can trigger tsunamis that impact coastlines.
seamounts
Sediment closer to mid-ocean ridges is typically younger, coarser, and consists of more volcanic material compared to sediment farther away. This is because the closer proximity to the ridge results in a higher input of freshly erupted material from the underlying volcanic activity.
abyssal plain
The Pacific Ocean basin contains many deep-sea trenches, such as the Mariana Trench, which is the deepest known point in the ocean. These trenches are formed by the subduction of tectonic plates, creating some of the most extreme environments on Earth.
The Arctic Ocean Basin
The volcanic landforms at divergent ocean plate boundaries are oceanic ridges.
In areas where their speed and ability to transport material is reduced. The final destination for most sediments is a basin, lake, or ocean.
The ocean floor is primarily made up of basaltic rock, which is formed from solidified lava from volcanic activity. It also contains sediment such as sand, mud, and organic material that has accumulated over time.