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Both the oceanic and continental crusts are partially composed of what material?
Both oceanic and continental crusts consist primarily of igneous rock although they both contain some sedimentary rock. Oceanic crust is composed mainly of basaltic rock, while continental crust is composed of granitic rock.
What is crustal shortening?
Crustal shortening is the reduction of the size of the Earth's crust through tectonic activities such as those found at a convergent plate boundary. When an oceanic crust collides with a continental crust, the denser oceanic crust subducts beneath the continental crust. This causes the oceanic crust to be subducted back into the mantle and melt, reducing the size of the crust. When two continental crusts collide and neither subducts, the material is being pushed up towards Earth's surface, resulting in mountains like Mount Everest. This causes the crusts to reduce in size.
What happens at a convergent tectonic plate boundary?
An ocean trench forms Two tectonic plates push against each other. The denser/heavier plate is pushed down under the other plate which is in turn pushed up to create mountains.
Do subduction take place when two oceanic crust meet?
No subduction doesn't take place when two oceanic crust meet. When two oceanic crusts meet, it is called a divergent boundary. Crustal features vary such as one like mid-ocean rdges. Subducting takes place when an OCEANIC and CONTINENTAL plate meet not when two oceanic plates meet.
How does the thickness of continental crust differ from that oceanic crust?
There is actually a difference between the thickness of the two. The fact is, however, that actual variance of the Earth's crust is larger than the variance between the continental and oceanic crusts. However, here is the data- The Earth's crust is comprised of layers- the continental crusts are between 35-70 km thick while the oceanic crusts are between 5-10 km thick
What are two kinds of crusts?
oceanic and the continental crust
What the lithosphere made up of?
The lithosphere is composed of the oceanic and continental crusts.
Is seafloor spreading a process that forms a new oceanic crusts?
Yes, it is.
What are convertgent boundaries?
A conversion boundary is a place where 2 tectonic plates are mving toward each other. There are 3 types of convergent boundaries OCEANIC CRUST-OCEANIC CRUST OCEANIC CRUST-CONTINENTAL CRUST CONTINENTAL CRUST-CONTINENTAL CRUST They are classified according to their crust
What are the characteristic of the oceanic crust?
The rocks that makes up the oceanic crusts, are very dark, relatively thin and highly dense.
Where are the newest oceanic crusts located?
Near ocean ridges such as the Atlantic ridge
Both the oceanic and continental crusts are partially composed of what material?
Both oceanic and continental crusts consist primarily of igneous rock although they both contain some sedimentary rock. Oceanic crust is composed mainly of basaltic rock, while continental crust is composed of granitic rock.
What is crustal shortening?
Crustal shortening is the reduction of the size of the Earth's crust through tectonic activities such as those found at a convergent plate boundary. When an oceanic crust collides with a continental crust, the denser oceanic crust subducts beneath the continental crust. This causes the oceanic crust to be subducted back into the mantle and melt, reducing the size of the crust. When two continental crusts collide and neither subducts, the material is being pushed up towards Earth's surface, resulting in mountains like Mount Everest. This causes the crusts to reduce in size.
What are the two crusts found on earth?
The earth's crust is comprised of the oceanic crust and the continental crust. Bread has the crunchy and the sofy crust.
What type of structure typically forms at a divergent boundary?
Three main structures form by convergent boundaries. There are three types of convergent boundaries, oceanic-oceanic, oceanic-continental, and continental- continental. Oceanic to oceanic boundaries form volcanic islands, because the two plates come together, one crust goes under, the other forms a mountain, and the lava from the crust that went under the other one goes through the mountain, making it a volcano. Oceanic- continental convergent boundaries form volcanoes, the continental crust form the mountain, the oceanice goes under and makes the lava that goes up through the mountain and makes a volcano. continental to continental boundaries form mountains. since both crusts are of the same density, they both shoot up and form a mountain.
What happens at a convergent tectonic plate boundary?
An ocean trench forms Two tectonic plates push against each other. The denser/heavier plate is pushed down under the other plate which is in turn pushed up to create mountains.
Do subduction take place when two oceanic crust meet?
No subduction doesn't take place when two oceanic crust meet. When two oceanic crusts meet, it is called a divergent boundary. Crustal features vary such as one like mid-ocean rdges. Subducting takes place when an OCEANIC and CONTINENTAL plate meet not when two oceanic plates meet.
