0
Why is a high temperature require to form magma at the oceanic ridges than in the continental crust?
Wiki User
∙ 12y ago
Because the oceanic ridge consists of very dense rocks having high specific gravity and with high melting point.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Where is new crust being created?
In oceanic ridges and continental rift zones.
What geological process occurs at a oceanic continental plate boundary?
Mid ocean ridges occur
How is the Earth's crust created and destroyed?
It is created at mid-oceanic ridges (divergent boundaries) and it is destroyed at subduction zones (convergent boundary between oceanic crust and continental crust).
Which has the younger rock the continental crust or oceanic crust?
The youngest rocks will be formed from cooled magma. Therefore volcanism, either on the continental crust or oceanic crust will create the youngest rocks.
What feature forms at diverging oceanic plates?
Ridges of buoyant oceanic crust form at diverging oceanic plate boundaries.
Where is new crust being created?
In oceanic ridges and continental rift zones.
Why is the oceanic crust is more active than the continental crust?
This is because the Oceanic Crust is denser and thinner than the Continental Crust and is actively being created by the forces of the magma at different mid-oceanic ridges.
What geological process occurs at a oceanic continental plate boundary?
Mid ocean ridges occur
How was plate tectonics proven through continental drift?
The creation of crust at the mid-oceanic ridges.
Where do mid ocean ridges?
Mid-Ocean Ridges forms where a continental plate slides under an oceanic plate. I hope this is what your looking for ! ! !:D
What are Continental margins near the edges of converging plates?
In the main along the mid oceanic ridges and along oceanic trenches.
What is the relationship between distance from the ridges and age of the crust?
At the oceanic ridges the age of igneous basalt rocks is approximately zero (as that is where they formed) and the rocks get older the farther away. The ages of sedimentary and metamorphic rocks does not correlate reliably with distance from the oceanic ridges like the ages of igneous rocks, because they can form anywhere not mainly at oceanic ridges. Igneous granite rocks are generally formed around continental volcanos not oceanic ridges.
What is a oceanic ridges?
a ridge in the ocean
Where do Rift zones rift valleys linear oceans and oceanic ridges features form?
They form in areas of the Earth in which continental or oceanic plates are pulling apart.
What is the thickness is the Earth's crust?
The Earth's oceanic crust is very thin at the mid-ocean ridges, and gradually thickens as it moves away from the ridges. The continental crust is thickest under mountain ranges. The average depth of oceanic crust is around 5 miles. The average depth of continental crust is 22 miles.
How is the Earth's crust created and destroyed?
It is created at mid-oceanic ridges (divergent boundaries) and it is destroyed at subduction zones (convergent boundary between oceanic crust and continental crust).
How do ocean trenches help explain why crust added at ocean ridges doesn't make earth any larger?
Ocean trenches were discovered as a sign of destructive plate margins. These plate margins cause oceanic crust to subduct below the continental crust at the oceanic-continental boundary, and force the oceanic crust to move down into the Earth's mantle and melt into basaltic magma. As this is happening, magma at oceanic ridges is creating new oceanic crust at the mid-oceanic ridges. Overall, these two processes cancel each other out and so the total amount of oceanic crust is staying aproximately the same. Therefore the Earth is not growing. Hope this helps :)
