0
What is the name of the type of basaltic crust that moves under less dense crust?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How oceanic crust different?
Oceanic and Contintental crust are different in composition as well as size and density Continental- granitic/50-100km thick Oceanic- basaltic/ up to 10km thick Oceanic crust is more dense making it subduct under continental crust
What happens when heavier oceanic crust converges with lighter crust at a deep ocean trench?
The heavier (usually older and cooler hence more dense) oceanic crust normally subducts (is forced under) the younger less dense crust.
Subduction zones and what type of boundary do they represent?
Subduction zones represent convergent boundaries, where oceanic crust is being subducted under continental crust, or under a less dense oceanic crust.
When a more dense oceanic plate sinks under continental plate?
This is called a destructive plate boundary. It occurs due to the fact that the oceanic crust is far denser than the continental crust. As a result it subducts into the mantle and is incenerated. Hope it helped:)
Why does one continental plate slide under the other?
Because magma rises through hot spots( holes in the ground on the ocean floor) and cools forming new crust which repeats over hundreds of years making the oceanic crust more dense than continental crust. Since the oceanic crust is more dense, it sinks faster causing it to slide under the continental crust
How oceanic crust different?
Oceanic and Contintental crust are different in composition as well as size and density Continental- granitic/50-100km thick Oceanic- basaltic/ up to 10km thick Oceanic crust is more dense making it subduct under continental crust
What happens during subduction?
Dense oceanic crust slides under less dense continental crust
What is the difference between the continental crust and the oceanic?
Continental crust is much older, granitic in nature, and less dense than oceanic crust which is composed of basaltic rock. Oceanic crust is in a constant state of creation and destruction through the processes of plate tectonics. Oceanic crust is also considerably less thick than continental crust.
What is the difference of continental crust and oceanic crust?
Two differences are that the oceanic crust is more dense than continental, and continental crust is composed mostly of granite, while oceanic is mostly basalt
How does the rock under the continents differ from rock under the oceans?
The rock of the continental crust is mostly granitic in composition, meaning it is a high silicate intrusive igneous rock. The rock of the oceanic crust is basaltic in origin, meaning it is lower in silica and higher in heavier elements like iron and magnesium and is classified as a mafic igneous rock. Oceanic crust is therefore more dense than continental crust.
What is the process of pushing denser oceanic crust under the less dense continental crust?
subduction
What happens when heavier oceanic crust converges with lighter crust at a deep ocean trench?
The heavier (usually older and cooler hence more dense) oceanic crust normally subducts (is forced under) the younger less dense crust.
Subduction zones and what type of boundary do they represent?
Subduction zones represent convergent boundaries, where oceanic crust is being subducted under continental crust, or under a less dense oceanic crust.
When a more dense oceanic plate sinks under continental plate?
This is called a destructive plate boundary. It occurs due to the fact that the oceanic crust is far denser than the continental crust. As a result it subducts into the mantle and is incenerated. Hope it helped:)
Why does one continental plate slide under the other?
Because magma rises through hot spots( holes in the ground on the ocean floor) and cools forming new crust which repeats over hundreds of years making the oceanic crust more dense than continental crust. Since the oceanic crust is more dense, it sinks faster causing it to slide under the continental crust
What happens when a plate of oceanic crust collides with a plate of the continental crust and why does this happen?
The oceanic crust will slide under the continental crust. And the reason is because the oceanic crust is much denser and the continental crust is least dense.
When 2 plates with continental crust collide happens to the continental crust?
Sometimes, they buckle and create mountains. More often than not, the less dense plate slips under the more dense plate.
