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What is the process where oceanic crust is sinking under continents at deep ocean trenches?
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∙ 11y ago
Sinkation
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∙ 11y ago
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Deep-oceanic trenches are most abundant around the rim of the?
Deep-oceanic trenches are most abundant around the rim of the Pacific. Deep ocean trenches are surficial evidence for sinking of oceanic lithosphere into the mantle at a subduction zone.
Deep ocean trenches are surficial evidence for?
Sinking of oceanic lithosphere into the mantle at a subduction zone.
What is the plate with oceanic crust sinking under one another plate with oceanic crust?
When one plate sinks under the other, it is callled subduction, no matter what kind of plate it is. When two oceanic plates collide, they form trenches(i.e. the mariana trench). Hope this answers your question!!!
What is oceanic-oceanic subduction?
Oceanic crust sinking under a plate with continental crust
Do the sinking of mid-ocean ridges into the ocean trenches prove the Continental Drift theory?
The discovery of the mid-ocean ridge confirmed Alfred Wegener's hypothesis that the continents were moving,
Why are Oceanic trenches found only in association with subduction zones?
The trenches are evidence that one of the colliding plates is moving beneath the other. As the two plates move together, one gets pushed below the other. The place where this sinking/bucking occurs creates a deep trench. The deepest of which is Marianas trench about 7 miles deep.
What does subduction have to do with geology?
Subduction is part of the geological process of plate tectonics. A subduction zone is a place where the oceanic plate is sinking back in to the mantle (usually at the edge of a continental plate.
Why does the size of the earth remain the same despite of what happens at the mid-oceanic redges?
Think of it like a pot of boiling soup, if you look at the pot of boiling soup there are areas where the soup is bubbling up to the top but ASLO other areas where the soup is moving back down to the base of the pot (it is called convection) - the soup pot does not have to get wider!. Well the Earth behaves in the same way. The mid-oceanic ridges are places where the hot internal rocks are rising up to make new oceanic sea floor crust, but around the edges of the ocean there are other areas where could sea floor crust is sinking back into the middle of the Earth. These areas are called the deep ocean trenches (or subduction zones) such as the Marianas Trench. Thus, overall the everything is kept in balance and the size of the Earth remains constant. Note also that there are places on the Earth where instead of crust sinking back into the middle of the Earth, continents crash into one another and when they do this the crustal rocks become folded and mountains are formed - again the process of mountain building balances out the spreading that happens at the mid-oceanic ridges.
What are happening to the earths plates in Japan Trench?
The pacific oceanic plate is sinking beneath conential plate
What is happening to the earth's plates at the japan trench?
The pacific oceanic plate is sinking beneath the continental plate to which Japan is attached in what is called a subduction zone. The oceanic plate is being destroyed.
Plate with oceanic crust sinking under another plate with oceanic crust?
When two oceanic plates or two plates both containing oceanic crust collide or converge, the convergent boundary will form a trench. The plate which has the higher density will plunge beneath the other plate forming a trench.
Why are pieces of rock placed in trenches under pipes?
They're there simply to help support the pipe, and stop it sinking into the ground beneath it.
