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The part of the plate that is subducting gets melted into magma and flows back into the mantle.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoThe edge of the that's being pushed downwards eventually reaches the molten lava under the crust, and melts.
Wiki User
∙ 10y agoIt sinks (and partially melts causing volcanoes above it) deep into the mantle where it is warmed up again. It then rises in the mid oceanic ridges.
Wiki User
∙ 16y agoThey are melted.
Wiki User
∙ 13y agothe materials melt
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What happens to the old oceanic crust as new molten material rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
Both slab-pull and ridge-push are mechanisms that cause?
Ocean plates to be subducted into the mantle
Do magnetic stripes on the ocean floor oceanic crust sink back into the mantle?
Eventually the oceanic crust, along with the magnetically aligned minerals contained within, will be subducted into the mantle.
What is likely to form where oceanic crust is subducted under continental crust?
because oshieotic crust is under Mantle is thicker
What happens in a volcano?
What happens to old oceanic crust as new molten material from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens to old oceanic crust as new molten material rises to the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens to the old oceanic crust as new molten material rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What kind of crust usually goes into the mantle?
Oceanic crust gets subducted into the mantle.
What can happen when two oceanic plates converge and one is subducted into the mantle?
The colliding plate edges become crumpled to form a mountain range.
What happen to the oldest rock on the ocean floor to continue the rock cycle?
Or they get subducted and re-enter the mantle or they get obducted onto continent (the latter being called an ophiolite).
What happens at a trench?
Older, colder, more dense oceanic crust is being subducted into the mantle.
Can metamorphic rocks be part of an isolated system?
No. They will either be subducted into the mantle or uplifted and/or exposed to erosion.
Both slab-pull and ridge-push are mechanisms that cause?
Ocean plates to be subducted into the mantle
Why are convection currents in the mantle?
The convection currents are a result of heat from the interior of the Earth. The rock of the upper mantle known as the asthenosphere is plastic-like but not molten. It acts like a conveyor belt, moving heat from Earth's interior upward, and cooled material downward in a big loop. New crust is created where mantle material reaches the surface at places called mid-ocean ridges. Older, colder oceanic crust is subducted and drawn into the mantle, completing the loop.
What happens to old oceanic crust as molten materials rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
How do convection currents cause the plates to move?
Convection currents occur as hot material expands and rises, and cool material contracts and sinks, much like a conveyor belt. It is new material from the Earth's center that rises and old material that sinks. The rising material pushes old material to the side, driving the lithosphere plates apart. The sinking material causes the plates to be pushed together.
