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What main mineral makes up the continental crust?
The main mineral that makes up the continental crust is feldspar. It is one of the most abundant minerals in the Earth's crust and is commonly found in granite and other rocks that make up the continental crust.
Why oceanic crust is always subducted underneath continental crust?
Oceanic crust is denser than continental crust, so when they collide, the denser oceanic crust is forced beneath the lighter continental crust in a process known as subduction. This subduction occurs at convergent plate boundaries where two plates are moving towards each other. The sinking oceanic crust can trigger volcanic activity and create mountain ranges on the continental crust.
Why does the oceanic crust go under the continental crust when they collide?
Oceanic crust is denser than continental crust because it is composed of mafic rocks like basalt, whereas continental crust is made of felsic rocks like granite. This density difference causes the oceanic crust to subduct under the less dense continental crust when they collide at convergent plate boundaries.
What happens at a destructive margin?
At a destructive margin, also known as a convergent boundary, two tectonic plates collide. One plate is usually forced beneath the other in a process called subduction. This can result in the formation of deep ocean trenches, volcanic arcs, and earthquakes.
Do tectonic plates consist of continental or oceanic crust?
Tectonic plates consist of both continental and oceanic crust. The Earth's lithosphere is divided into several large and small plates that constantly move and interact with each other. Some plates are predominantly made up of continental crust, while others are mostly composed of oceanic crust.
What is the other type of crust the continental crust and what?
Oceanic Crust
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
When two geologic plates are moving away from each other what happens?
When it is two continental plates, new oceanic crust is formed, and when this continues, more oceanic crust is formed between the plates.
What happens when 2 pieces of continental crust converge?
When two pieces of continental crust converge, they create significant geological features due to their buoyancy and inability to subduct easily. Instead of one plate sinking beneath the other, the collision often leads to the uplift of material, forming mountain ranges like the Himalayas, which were created by the collision of the Indian and Eurasian plates. This process can also result in increased seismic activity, as the stress from the collision builds up and is eventually released as earthquakes.
What main mineral makes up the continental crust?
The main mineral that makes up the continental crust is feldspar. It is one of the most abundant minerals in the Earth's crust and is commonly found in granite and other rocks that make up the continental crust.
Why oceanic crust is always subducted underneath continental crust?
Oceanic crust is denser than continental crust, so when they collide, the denser oceanic crust is forced beneath the lighter continental crust in a process known as subduction. This subduction occurs at convergent plate boundaries where two plates are moving towards each other. The sinking oceanic crust can trigger volcanic activity and create mountain ranges on the continental crust.
The Earth's crust is broken into pieces that rub and bump against each other The movement of these crust pieces causes what to happen?
Earthquakes
Why does the oceanic crust go under the continental crust when they collide?
Oceanic crust is denser than continental crust because it is composed of mafic rocks like basalt, whereas continental crust is made of felsic rocks like granite. This density difference causes the oceanic crust to subduct under the less dense continental crust when they collide at convergent plate boundaries.
Why does the oceanic sink beneath continental crust at convergent boundaries?
The continental crust is less dense than the oceanic crust. That's the reason we find that the oceanic crust sinks (subducts) beneath the continental crust.Continental crust is less dense than oceanic crust and so cannot sink below it.
What happens at a destructive margin?
At a destructive margin, also known as a convergent boundary, two tectonic plates collide. One plate is usually forced beneath the other in a process called subduction. This can result in the formation of deep ocean trenches, volcanic arcs, and earthquakes.
Is the crust formed or destroyed at a sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
Is the crust formed or destroyed at the sliding boundary?
At convergent boundaries are boundaries the crust is destroyed by subduction of oceanic crust underneath continental crust or other oceanic crust.
