your answer is subduction
subduction is the answer.
subduction
i think that its subduction ...
In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep ocean trenches.
When sediment sinks into the ocean floor, it is called sedimentation. Over time, layers of sediment build up and compress to form sedimentary rocks.
The process where the ocean floor sinks beneath the crust and back into the mantle is known as subduction. This is the result of the collision of two tectonic plates. This in turn results in the formation of fold mountains and volcanism (such as that which occurs in the Western US - for example Mt. St. Helens and the Western coast of South America).
The process in which the ocean floor sinks into the mantle is called subduction. This occurs at convergent plate boundaries, where one tectonic plate slides beneath another. Subduction zones are associated with deep-sea trenches and volcanic activity.
The cooler saltier water sinks toward the ocean floor.
what happens is the ocean floor does not just keep spreading.instead, it sinks beneath deep underwater canyons called deep- ocean trenches
I think it sinks toward the ocean floor.
Subduction.
Subduction.