oceanic crust!
HOME - TOPICS - ROCK CYCLE - LAYERS OF THE EARTH - THE EARTH'S CRUST - IMPACT - BIBLIOGRAPHY
Layers of the Earth -
Crust - Oceanic - Continental
Mantle
Core - Outer - Inner
Layers of the Earth -
Crust - Oceanic - Continental
Mantle
Core - Outer - Inner
![Picture](/uploads/2/9/9/2/29921743/5172061.jpg?414)
The oceanic crust is the layer closet or closer to the mantle, overall it only covers 0.1 % of the Earth's surface. 90% of the oceanic crust is underwater at all times.
The oceanic crust is currently estimated at 180 million years old and is proven that it was created at the mid ocean ridges - i.e. where tectonic plates are disconnected from each other. Also it is said to be produced of balsalt, diabase and gabbro rock, creating a thin crust of a maximum of 20 km. When it exceeds this the rocks are pulled apart by the continents, from a process called subduction. However when this happens the magma and upper mantle puts extra pressure on the crust.
In the diagram it show the responder the difference and location of the two crust, oceanic and continental. The image also shows you the difference in style and shape.
The oceanic crust is currently estimated at 180 million years old and is proven that it was created at the mid ocean ridges - i.e. where tectonic plates are disconnected from each other. Also it is said to be produced of balsalt, diabase and gabbro rock, creating a thin crust of a maximum of 20 km. When it exceeds this the rocks are pulled apart by the continents, from a process called subduction. However when this happens the magma and upper mantle puts extra pressure on the crust.
In the diagram it show the responder the difference and location of the two crust, oceanic and continental. The image also shows you the difference in style and shape.
![Picture](/uploads/2/9/9/2/29921743/1757970.gif?524)
This image represents the continents pulling the oceanic crust apart - subducting each other. You can also clearly identify that the magma and upper mantle are uplifting towards the residing crust - causing the process to quicken and speed up.
![Picture](/uploads/2/9/9/2/29921743/6605736.gif?793)
This is an excellent representation of the two types of the earth's crust. It shows, identifies and labels how the process of subduction works, and where the remainder of the crusts go, after they are dismantled.