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Why are the oldest parts of the ocean floor no older than about 200 million years.?
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
What are places where oceanic crust sinks back to the mantle?
No. Mid oceanic ridges are the places where new oceanic crust are forming.
What is the ocean bottom called?
The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.
What is the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary called?
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary is called subduction. This occurs because oceanic crust is denser than the underlying asthenosphere, causing it to be pulled down into the mantle. Subduction zones are associated with the formation of volcanic arcs and deep-sea trenches.
What landform is created when the ocean floor sinks back into the earth?
A trench is formed when the ocean floor sinks back into the Earth. Trenches are deep, narrow depressions in the ocean floor where one tectonic plate is being forced beneath another. These features are often associated with subduction zones, where tectonic plates collide.
What is the process by which ocean floor sinks into the mantle?
subduction is the answer.
What is the geological process by which the ocean floor sinks into the mantle?
subduction
What is the process called In which the ocean floor sinks into the mantle called?
i think that its subduction ...
When water gets denser how does it move?
I think it sinks toward the ocean floor.
If a mass of ocean water is cold and salty what will it do?
The cooler saltier water sinks toward the ocean floor.
Why are the oldest parts of the ocean floor no older than about 200 million years.?
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
Is magnetic stripes on the ocean floor the places where oceanic crust sinks back to the mantle?
it is right in your book soo... you should be able to answer this
What process is shown occurring at C and what does it occur?
In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep ocean trenches.
What is the process called when the sea floor sinks into the mantle?
Subduction.
What is the process by which the oceans floor sinks into the mantle is called?
Subduction.
What is a result in the process where the ocean floor sinks beneath the crust and back into the mantle?
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).
True or false magnetic stripes on the ocean floor are places where oceanic crust sinks back to the mantle?
True. Magnetic stripes on the ocean floor are created by alternating bands of magnetic polarities in the oceanic crust. These stripes are evidence of seafloor spreading where new crust is formed at mid-ocean ridges, pushing older crust away. Subduction zones are where older crust sinks back into the mantle.
